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3 Machine Keys
Machine Keys, or Straight keys are made from hardened rod with a machined square or rectangular cross section, and are the most common type of key. They are installed into keyways to transmit torque from shafts to gears and other components. They are called “keys” because they lock a component to the shaft by means of a corresponding keyway in a shaft.
152 results, (click on any line for more information)
| Buy Machine Keys from one of our FCH Network Members | ||||||||
|---|---|---|---|---|---|---|---|---|
| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1/8 x 1/2 | key rectangular st (pl) 3/16x1/8x1/2 drw (W000) (W000) (W000) | 2,490 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 3/4 | key mach us sq b hard 3/16x3/16x3/4 (W050) | 303 |
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| NAPPCO | TX | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 3/16 x 3/16 x 36 | 3/16 x 3/16 x 36 square key zp rohs | 5 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 13/16 | 3/16x3/16x13/16 square key pln | 718 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 1 29/32 | 3/16x3/16x1-29/32 square key pln | 391 |
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| IRF | NJ | Machine Key (Square & Rectangular) | Brass | Plain | 3/16 x 3/16 x 1 1/2 | long square key | 1039 |
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| IRF | NJ | Machine Key (Square & Rectangular) | Brass | Plain | 3/16 x 3/16 x 1 1/2 | long square key | 1039 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Grade 2 | Plain | 3/16 x 3/16 x 2 1/8 | square-.001/.000 | 2000 |
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| MidStates | MI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 | sq machinery key 2-1/2 | 2 |
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| MidStates | MI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x .875 | 3/16 x 3/16 x .875 machine key | 200 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 1 | machine key oversized square ends | 100 |
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| Hayes | CA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 3/4 | ms20066-183 3/16 x 3/16 x 3/4 gr c keystock steel | 300 |
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| NAPPCO | TX | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 3/16 x 3/16 x 36 | 3/16x3/16x36 square key zp rohs | 5 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 12 | sq key 3/16x3/16x12 cs pln | 55 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 1 | 3/16x3/16x1 cut key | 594 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 1-5/16 square key pln | 250 |
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| Mansco | MI | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/16 x 3/16 x 1 1/4 | 3/16x3/16x1-1/4 square key 18-8 s/s | 100 |
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| WINA | MN | Machine Key (Square & Rectangular) | Aluminum | Plain | 3/16 x 3/16 x 3 | key mach b os 1018 pl 3/16x3/16x3 | 500 |
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| WINA | MN | Machine Key (Square & Rectangular) | Aluminum | Plain | 3/16 x 3/16 x 7/8 | key mach b us 1018 pl 3/16x3/16x7/8 | 1290 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 29/32 | 3/16 x 3/16 x 29/32 square key pln | 15 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 1 3/8 | 3/16x3/16x1 3/8 cut key | 762 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 1 1/2 | 3/16x3/16x1 1/2 cut key +.001/-.000 | 934 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 1 1/8 | 3/16x3/16x1-1/8 square key pln | 204 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 3/4 | 3/16x3/16x3/4 cut key +.001/-.000 | 311 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 2 5/8 | 3/16 x 3/16 x 2-5/8 square key pln | 11 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 11/16 | 3/16x3/16x11/16 square key pln | 485 |
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| WINA | MN | Machine Key (Square & Rectangular) | Aluminum | Plain | 3/16 x 3/16 x 3 | key mach b us 1018 pl 3/16x3/16x3 | 5192 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 1 1/4 | 3/16x3/16x1 1/4 cut key +.001/-.000 | 254 |
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| Wurth Ind | IN | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 3 | key mach b us 1018 pl 3/16x3/16x3 steel plain | 5192 |
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| Wurth Ind | IN | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 3 | key mach b os 1018 pl 3/16x3/16x3 steel plain | 500 |
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| Wurth Ind | IN | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/16 x 7/8 | key mach b us 1018 pl 3/16x3/16x7/8 steel plain | 1290 |
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| MidStates | MI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1/4 | machinery key-both ends rnd 1- | 92 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1/4 x 1 7/64 | key rect st (pl) 3/16x1/4x1 7/64 | 32 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1/4 x 11/16 | 3/16 x 1/4 x 11/16 rectangular key oversized alloy stl rc40-50 pln | 140 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1/4 x .86 | 3/16x1/4x.86 cut key | 100 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 5/16 x 3 | 3/8x5/16x3in undersized rectangular machine key plain | 130 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 3/8 x 2 | key mach us sq b 3/8x3/8x2 (W040) | 651 |
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| NAPPCO | TX | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 3/8 x 3/8 x 36 | 3/8 x 3/8 x 36 square key zp rohs | 8 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Grade 2 | Plain | 3/8 x 3/8 x 1 | square +.001/.000 | 1040 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Grade 2 | Plain | 3/8 x 3/8 x 2 1/2 | square +.001/.000 | 375 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Grade 2 | Plain | 3/8 x 3/8 x 1 1/2 | square +.001/.000 | 4630 |
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| NAPPCO | TX | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 3/8 x 3/8 x 36 | 3/8x3/8x36 square key zp rohs | 10 |
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| Irwin Ind | Ont | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 x 3/8 x 1.000 | 3/8 x 3/8 x 1.000 machine key undersize stainless steel | 16 |
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| Mansco | MI | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 x 3/8 x 12 | 3/8x3/8x12 square key 18-8 s/s 1/box | 4 |
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| Mansco | MI | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 x 3/8 x 1 1/4 | square key 18-8 s/s | 124 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 3/8 x 2 | 3/8x3/8x2 cut key | 18 |
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| Wurth Ind | IN | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 3/8 x 2 1/4 | key mach b us 1018 pl 3/8x3/8x2 1/4 steel plain | 2107 |
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| WINA | MN | Machine Key (Square & Rectangular) | Aluminum | Plain | 3/8 x 3/8 x 2 1/4 | key mach b us 1018 pl 3/8x3/8x2 1/4 | 2107 |
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| Wurth Ind | IN | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 3/8 x 3 | key mach b us 1018 pl 3/8x3/8x3 steel plain | 340 |
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| WINA | MN | Machine Key (Square & Rectangular) | Aluminum | Plain | 3/8 x 3/8 x 3 | key mach b us 1018 pl 3/8x3/8x3 | 340 |
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| Jackson | MS | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1/2 x 12 | key machine rectangle | 20 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1/2 | 3/16x1/2 oversized square machine key plain round both ends | 1457 |
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| Hodell | OH | Machine Key (Square & Rectangular) | Steel | Plain | 3/4 x 1/2 x 2 9/16 a108 | 3/4x1/2x2 9/16 machine key astm a108ms-55 grade 1018 | 3 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 9/16 | 3/16x9/16 sq. key one end rnd. c of c req. (jg1-3/16x9) per mes-0007 spec | 685 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16x9/16 square machine key undersized plain | 6 |
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| Jackson | MS | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 5/8 x 12 | key machine rectangle | 6 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 3/32 x 5/8 | sqr keysundersize stl | 150 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 5/8 | 3/16x5/8 sq. key rnd ends c of c req. per mes-0007 spec (jf1-3/16x10) | 313 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 3/32 x 11/16 | 3/32x11/16 sq. key one end rnd. cofc (jg1-3/32x11 mes-0007) | 10 |
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| WDMB | IA | Machine Key (Sq uare & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/16 x 3/4 | key mach square b under sst 303 3/16x3/4 (W0C0) | 5,040 |
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| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | 3/4 x 3/4 x 6 | 3/4 x 3/4 x 6 square key steel | 25 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/4 | 3/16x3/4 sq. key rnd ends c of c req. per mes spec 007 (jf1-3/16x12) | 384 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 3/4 | 3/16x3/4 sq. key one end rnd. including mil-test report identifying the material heat treat tensile and yield per mes-0007 spec (jg1-3/16x12) | 135 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 3/4 x 3/4 x 12 | sq key 3/4x3/4x12 cs pln | 34 |
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| MidStates | MI | Machine Key (Square & Rectangular) | Steel | Plain | 3/4 x 3/4 | 3/4 x 3/4 machinery key-both ends rnd 5- | 1 |
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| Century | NY | Machine Key (Square & Rectangular) | Steel | Plain | 3/4 x 3/4 x 6in square key steel | 25 |
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| Mansco | MI | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/4 x 3/4 x 12 | 3/4x3/4x12 square key 18-8 s/s | 10 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 7/8 | square key | 500 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 7/8 | square key | 2,000 |
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| Century | NY | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 7/8 square key steel | 10 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 7/8 | 3/16 x 7/8 square key undersize stl pln | 2650 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 15/16 | 3/16x15/16 square machine key undersized plain | 100 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 15/16 | 3/16x15/16 sq. key one end rnd. c of c req. per mes-0007 spec | 326 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 | key mach square under st (pl) 3/16x1 (W0C0) | 28,000 |
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| Purchase | MO | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 | 3/16 x 1 square key | 211 |
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| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 | 3/16 x 1 square key steel | 795 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 | 3/16x1 sq. key one end rnd. c of c req. per mes-0007 spec | 356 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 | 3/16x1 square machine key undersized plain | 200 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 | 3/8 x 1 square key oversized stl pln | 494 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 | 3/16x 1 sqr key | 276 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 | 3/16 x 1 square key round ends undersize stl pln | 296 |
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| Century | NY | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 square key steel | 795 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 1/8 | sqr keysundersize stl | 140 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 x 1 1/8 | 3/8 x 1 1/8 square key undersize rd ends 18-8 ss a/f .373/.375 | 984 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 3/16 | 3/16x1 3/16 sq. key rnd ends c of c req. per mes-0007 spec (jf1-3/16x19) | 64 |
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| Jackson | MS | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 1/4 | key machine square | 43 |
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| WSB | KY | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/16 x 1 1/4 | key mach sqr b under (18-8) 3/16x1 1/4 | 12,000 |
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| Wurth | IN | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 1/4 | 3/8 x 1-1/4 square key class 2 c1018 w/ chamfered ends per print 8212 rev 06 | 422 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16x1-1/4 square machine key undersized plain | 25 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 1/4 | square key | 150 |
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| WDMB | IA | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/16 x 1 1/4 | key mach sqr b under (18 8) 3/16x1 1/4 (W020) (W020) | 12,000 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 1/4 | 3/16 x 1-1/4 sqr key | 500 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 9/32 x 5/32 | 3/16 x 1 9/32 x 5/32 rect. key plain plain K15018N0128 | 5 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1.30 | key square rd/end hrd st 3/8x1.30l drw | 100 |
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| Endries | WI | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 x 1 5/16 | 3/8x1-5/16 18-8 s/s steel square machine key | 25 |
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| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 3/8 | 3/16 x 1 3/8 square key (STEEL) (STEEL) | 50 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 3/8 | square key | 90 |
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| Century | NY | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 3/8 square key steel | 100 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 1/2 | gib head key 5/16 taper | 1216 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 1/2 | 3/16x1 1/2 sq. key one end rnd. including mil-test reports identifying the material heat treat tensile and yield per mes-0007 spec (jg1-3/16x24) | 57 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 1/2 | 3/8x1-1/2 square machine key undersized plain | 259 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 1/2 | 3/16 x 1 1/2 square key oversized alloy stl rc 40-50 heat treat pln | 400 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 1 1/2 | 3/16 x 1 1/2 square key undersize hardened stl pln | 160 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 9/16 | 3/8x1-9/16 1018 steel square machine key undersized plain | 425 |
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| Revcar | VA | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 5/8 | sq key sq ends | 550 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 5/8 | 3/8x1 5/8 square key undersize 1045 alloy stl pln | 212 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 7/8 | key mch sq a rc40 undr st 3/8x1 7/8 drw (W010) (W010) | 742 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 7/8 | 3/8 x 1 7/8 square key oversize alloy rc40-50 round ends stl pln | 900 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 2 | sqr keys | 90 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 2 | square key | 80 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 2 | square key | 70 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 2 | 3/8 x 2 square key oversized round ends alloy stl rc40-50 heat treat pln | 300 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 2 1/8 | 3/16x2 1/8 sq. key rnd ends c of c req. per mes-0007 spec (jf1-3/16x34) | 32 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 2 1/8 | 3/8 x 2 1/8 square key oversize stl pln_x000d_a/f .375-.376 | 250 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 3/8 x 2 1/4 | pin snap square 2wire steel (zt) 3/8x2 1/4el (W030) (W030) (W030) | 507 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 2 1/4 | gib head key 5/16 taper | 525 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 24.15 | 3/8x24.15 square machine key undersized plain | 2 |
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| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 2 1/2 | 3/8 x 2 1/2 square key (RC-32-48) (RC-32-48) | 5 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 2 5/8 | 3/8x2-5/8 square machine key undersized plain | 368 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 3 1/2 | gib head key 5/16 taper | 250 |
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| WSB | KY | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 x 3 1/2 | key mach sqr b under (18-8) 3/8x3 1/2 | 624 |
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| WDMB | IA | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/8 x 3 1/2 | key mach sqr b under (18 8) 3/8x3 1/2 (W020) (W020) | 447 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 3.88 | gib key steel (pl) 3/8(+.001)x3.88 (W0M0) | 59 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/4 x 4 | 3/4x4 in. square key 45 degree chamfer end +.001-.000 | 8 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 7 1/2 | 3/8x7 1/2 square key oversized stl pln | 564 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 9 5/8 | 3/8x9-5/8 square key +.001-.000 | 20 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 10 | 3/8x10 square machine key oversized +.001/-.000 plain | 25 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 11 1/2 | 3/8x11-1/2 square key +.001-.000 | 196 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 12 | square key | 4 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 3/32 x 12 | square key | 4 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 3/4 x 12 | square key | 3 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 3/16 x 12 | square key | 5 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 3/8 x 12 | square key | 18 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 5/8 | 3/8x1-5/8 square machine key undersized plain | 340 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/4 x 4 .001 | 3/4x4 in. square key +.001-.000 | 18 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 15 .001 | 3/8x15 square key +.001-.000 | 26 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 11 .001 | 3/8x11 square key +.001-.000 | 40 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 12 .001 | 3/8x12 square key +.001-.000 | 54 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 2 | 3/8x2 square machine key undersized plain | 1000 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 6.1875 | 3/8x6.1875 1018/1020 steel square machine key undersized plain | 184 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/16 x 2 1/2 | 3/16 x 2 1/2 sq machine key .001 oversize | 45 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8x4 square machine key undersized plain | | 276 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8x3 square machine key undersized plain | | 362 |
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| Liberty | IL | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/16 square key (+0/-.002) x 1-11/64 overall length form b 18-8 stainless steel | 1 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 3/4 | 3/8x1-3/4 1045 square machine key undersized | 689 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 1 3/4 | 3/8x1-3/4 square machine key undersized plain | 1000 |
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| Endries | WI | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 3/16 x 3 1/2 | 3/16 x 3 1/2 sq machine key 304ss | 45 |
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| NutsBolts | NE | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 | 3/8 square snap wire pin | 76 |
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| Century | NY | Machine Key (Square & Rectangular) | Steel | Plain | 3/8 x 2 1/2 square key rc-32-48 | 25 |
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| Century | NY | Machine Key (Square & Rectangular) | Steel | Plain | parker nichols 35-56004-4071-1 rev.b key square parts must be packed with desiccant | 18 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 3.1 | nas1464-066-02c per nas1463 less qualification testing para 3.1 per nas1463 accept insp 4.4 only. nas1464-066-02c | 4721 |
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| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | 3 | 351298 key square 3/16x3/16 rnd ends 2 3/4 leng c1018 steel rev- | 350 |
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