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1/4 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.
100 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 | |
| MidStates | MI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3/16 | sq machinery key 1-1/4in | 4 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3/16 x 1 3/8 | 1/4 x 3/16 x 1 3/8 rectangular key undersized alloy stl rc 40-50 heat treat pln | 120 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 7/8 | key mach us sq b 1/4x1/4x1 7/8 (W050) | 653 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 2 7/8 | sqr keyprint# 843-4-46length tolerance +/-.010 | 175 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 3/4 | sqr keyprint #843-4-28 | 159 |
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| Irwin Ind | Ont | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 1018 1045 | 1/4x1/4x1 machine key 1018-1045 steel | 51 |
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| NAPPCO | TX | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 3/4 | 1/4x1/4x3/4l square key plain ansi b17.1 | 319 |
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| NAPPCO | TX | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 1/4 x 1/4 x 36 | 1/4 x 1/4 x 36 square key zp rohs | 9 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 3/16 | 1/4x1/4x1-3/16 square key pln | 232 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Grade 2 | Zinc/Clear | 1/4 x 1/4 x 2 5/8 | square +.001/.000 | 1590 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Grade 2 | Plain | 1/4 x 1/4 x 3/4 | square +.001/.000 | 825 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Grade 2 | Plain | 1/4 x 1/4 x 4 | square-.001/.000 | 525 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Grade 2 | Plain | 1/4 x 1/4 x 1/2 | square-.001/.000 | 695 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Grade 2 | Plain | 1/4 x 1/4 x 6 | square-.002/.001 | 247 |
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| ISSCO | MO | Machine Key (Square & Rectangular) | Grade 2 | Zinc/Clear | 1/4 x 1/4 x 2 | square +.001/.000 | 700 |
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| MidStates | MI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 | sq machinery key 3-1/4in | 485 |
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| MTP | CA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x .740 | 1/4 x 1/4 x .740 steel 1018 undersized key stock sq end | 325 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 6 | square key | 150 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 12 long square key carbon steel plain | 2 |
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| Hayes | CA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 3/4 | ms20066-250 1/4 x 1/4 x 3/4 gr c keystock steel | 300 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 1/2 | 1/4x1/4x1-1/2 t-304 sqma ch key undersized | 679 |
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| NAPPCO | TX | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 1/2 | 1/4x1/4x1-1/2 square keys | 103 |
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| NAPPCO | TX | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 1/4 x 1/4 x 36 | 1/4x1/4x36 square key zp rohs | 9 |
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| NAPPCO | TX | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 3/4 | 1/4x1/4x3/4l square key plain ansi b17.1 | 319 |
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| Century | NY | Machine Key (Square & Rectangular) | Steel | Plain | ms20066-207 ms20066-207 key square 1/4 x 1/4 x 1-1/8 lg | 5 |
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| WINA | MN | Machine Key (Square & Rectangular) | Aluminum | Plain | 1/4 x 1/4 x 2 | key mach a os 1018 pl 1/4x1/4x2 | 3642 |
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| WINA | MN | Machine Key (Square & Rectangular) | Aluminum | Plain | 1/4 x 1/4 x 3/4 | key mach b us 1018 pl 1/4x1/4x3/4 | 2241 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 1/2 | 1/4x1/4x1 1/2 cut key beveled | 400 |
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| Mansco | MI | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 x 1/4 x 1 1/4 | 1/4 x 1/4 x 1-1/4 square key 18-8 s.s. | 25 |
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| Hodell | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 1/4 501 016 016 | 1/4x1/4x1 1/4 std machine key 501-016-016-116 b.e.s. | 100 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 3/4 | 1/4x1/4x1 3/4 cut key | 388 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 2 | 1/4x1/4x2 cut key | 40 |
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| Wurth Ind | IN | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 2 | key mach a os 1018 pl 1/4x1/4x2 steel plain | 3642 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 1/2 | 1/4x1/4x1 1/2 cut key a round | 50 |
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| Accutite | CA | Machine Key (Square & Rectangular) | 400 Stainless (405, 410,416,420,430 etc.) | Plain | 1/4 x 1/4 x 2 3/8 | 1/4 x 1/4 x 2 3/8 +/-.010 key square both ends 416 stainless | 665 |
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| Alma Bolt | MI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 3/4 | 1/4 x 1/4 x 3/4 square machine key plain | 1022 |
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| Wurth Ind | IN | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 3/4 | key mach b us 1018 pl 1/4x1/4x3/4 steel plain | 2241 |
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| Hodell | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 1/4 501 016 016 | 1/4x1/4x1 1/4 std machine key 501-016-016-116 b.e.s. | 100 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 2 | 1/4x1/4x2 cut key a round | 50 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 3 | 1/4x1/4x3 cut key | 87 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 1/4 | 1/4x1/4x1 1/4 cut machine key +.001/.000 | 499 |
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| Fastener | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 3/4 | 1/4 x 1/4 x 1-3/4 machine key undersize carbon steel | | 7 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 3/4 | 1/4x1/4x1-3/4 square key pln | 250 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 | 1/4x1/4x1 cut key | 401 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 5/16 x 1 3/4 | 1/4x5/16x1 3/4 rectangular key oversized alloy stl rc40-50 heat treat pln | 53 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 5/16 x 1 5/8 | 1/4 x 5/16 x 1-5/8 flat machine key pln | 19 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 5/16 x 1 5/8 | 1/4 x 5/16 x 1-5/8 flat machine key pln | 1 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 5/16 x 1 | 1/4x5/16x1 rectangular key rd end on 5/16 dimension oversize alloy stl rc 40-50 pln | 204 |
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| Jackson | MS | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 1/4 x 3/8 x 12 | rectangle key | 14 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4x.69 square key | 1000 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3/4 | sqr keysundersize stl | 120 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3/4 | 1/4x3/4 square key oversize rd ends alloy stl rc40-50 pln | 140 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 13/16 | 1/4 x 13/16 sq machine key c1018 | 400 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 13/16 | 1/4 x 13/16 square key round ends oversize alloy stl pln ht to rc 40-50 | 100 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 7/8 | 1/4x7/8 square machine key undersized plain | 1248 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 15/16 | 1/4 x 15/16 square key oversized rd ends alloy stl rc40-50 heat treat pln_x000d_a/f .250/.251 | 640 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 | 1/4x1 c1018 square machine key undersized plain | 351 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 | key mach sqr b st (pl) 1/4x1 drw | 269 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 | square key | 1,000 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 | 1/4 x 1 sqr key | 2 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 1/16 | 1/4x1 1/16 sq. key one end rnd. c of c req. per mes-0007 spec (jg1-1/4x17) | 91 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 1/16 | 1/4 x 1-1/16 square key rd ends oversize heat treat alloy stl pln rc 40-50 | 58 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 x 1 1/8 | 1/4 x 1 1/8 square key undersize round ends ss | 760 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 3/16 | sqr keysundersize stl | 110 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 1/4 | sqr key | 250 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 1/4 | sqr keysundersize stl | 200 |
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| Endries | WI | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | 1/4 x 1 1/4 | 1/4x1-1/4 316 stainless steel square machine key | 80 |
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| Revcar | VA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 1/4 | sq key sq ends | 49,641 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 1/4 | 1/4 x 1 1/4 square key undersize alloy stl pln ht to rc 30-35 | 1658 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 x 1 1/4 | 1/4 x 1 1/4 square key undersized 303 ss | 350 |
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| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 1/2 | 1/4 x 1 1/2 square key (STEEL) (STEEL) | 12 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 1/2 | sqr key | 194 |
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| Century | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 1/2 square key steel | 180 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 1/2 | 1/4 x 1 1/2 square key w/square ends heat treated 40-50 hrc stl pln | 100 |
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| Sonfast | PA | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Zinc/Clear | 1/4 x 1 5/8 | 1/4x1-5/8 straight pin square end asme b18.8.2 low carb steel zinc | 20,620 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 5/8 | 1/4 x 1 5/8 square key undersize 1018 stl pln | 1700 |
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| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 3/4 | 1/4 x 1 3/4 square key (STEEL) (STEEL) | 100 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 3/4 | 1/4x1-3/4 square key radial ends oiled | 400 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 3/4 | square key | 130 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 | 1/4x2 sq machine key | 200 |
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| Jackson | MS | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 | ... key machine square | 66 |
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| Wurth | IN | Machine Key (Square & Rectangular) | Grade 2 | Plain | 1/4 x 2 | 1/4 x 2 square key grade 2 steel pack 50 per poly bag | 7,016 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 | square key | 50 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 | 1/4x 2 sqr key | 25 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 1/8 | sqr keysundersize stl | 110 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 1/8 | key mach sqr under st (pl) 1/4x2 1/8 | 400 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 3/16 | 1/4x2 3/16 square key round ends c of c req. per mes-0007 spec (jf1-1/4x35) | 204 |
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| Hodell | OH | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 1/4 | 1/4 sqx2 1/4 machinery key both ends round plain | 1 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3 | square key | 150 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3 | 1/4x3 sq. key one end rnd. c of c req. per mes-0007 spec (jg1-1/4x48) | 168 |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3 | 1/4x3 sq. key rnd ends c of c req. jf1-1/4x48) per mes-0007 spec | 115 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3 1/4 | key square 1018 1/4x3 1/4 (W020) (W020) | 3,776 |
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| Wurth | IN | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3 1/4 | 1/4 x 3-1/4 square key 1018 steel | 4,379 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3 3/8 | sqr keysundersize | 120 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 4 | 1/4x4 square machine key undersized plain | 110 |
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| Field Fas | IL | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 x 6 | 1/4 x 6 square key undersize 303 ss | 106 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 1/4 x 12 | square key | 6 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 | 1/4x2 square machine key +.001/-.000 | 1611 |
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| Liberty | IL | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | 1/4 square key (+0/-.0002) x 1-61/64 overall length form b 18-8 stainless steel | 1 |
| |
| Century | NY | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 3/4 square key steel | 100 |
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