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M4 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.
97 results, (click on any line for more information)
| Buy Machine Keys from one of our FCH Network Members | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 3 x 7 | a4x3x7 shaft key steel plain din 6885 | inquire |
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| YANKEE | NH | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 20 | m4 x 4 x 20 parallel key w/round end-plain | 50 |
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| MAINSOURC | NH | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 20 | m4 x 4 x 20 din 6885a parallel key st | 150 |
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| Wurth Ada | MN | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 14 | feathkey din6885 c45k a 4x4x14 | 1,500 |
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| Eurolink | SC | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 12 | 4 x 4 x 12 din 6885 a plain finish parallel key with round ends | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 x 32 | 4x4 x 32 a a4 stainless steel parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 x 25 | 4x4 x 25 a a4 stainless steel parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 x 30 | 4x4 x 30 a a4 stainless steel parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 x 10 | 4x4 x 10 a a4 stainless steel parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 25 | 4x4 x 25 a plain finish parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 x 16 | 4x4 x 16 a a4 stainless steel parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 32 | 4x4 x 32 a plain finish parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 x 20 | 4x4x 20 a a4 stainless steel parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 x 50 | 4x4 x 50 a a4 stainless steel parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 40 | 4x4 x 40 a plain finish parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 x 12 | 4x4 x 12 a a4 stainless steel parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 20 | 4x4 x 20 a plain finish parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 14 | 4x4 x 14 a plain finish parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 36 | 4x4 x 36 a plain finish parallel key with round ends din 6885 | inquire |
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| MtrcSpec | CA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 | M4x4 parallel key 12 long din 6885 | stock |
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| MidStates | MI | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 | parallel key 12 | 19 |
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| KBS | TN | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 10 | 4mm x4mm x10mm din6885/a shaftkeys roundends forma | 100 |
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| MidStates | MI | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 | m4 x 4 sq machinery key 40mm | 46 |
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| MidStates | MI | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 | m4 x 4 sq machinery key 13mm | 24 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 45 | a4x4x45 shaft key din 6885 steel plain | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 15 | mb4x4x15 shaft key steel plain din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 13 | mb4x4x13 shaft key steel plain din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 x 8 | ma4x4x8 shaft key a4 din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 x 20 | ma4x4x20 shaft key a4 din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 x 16 | ma4x4x16 shaft key a4 din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 200 | mb4x4x200 shaft key steel plain din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 12 | b4x4x12 shaft key steel plain din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 25 | mb4x4x25 shaft key steel plain din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M4 x 4 x 12 | mb4x4x12 shaft key a2 din 6885 | inquire |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 12 | 4 x 4 x 12 din 6885b parrl key sq end s | 15 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 80 | 4 x 4 x 80 din 6885a parl key stl pl | 69 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 56 | 4 x 4 x 56 din 6885a parl key stl pl | 50 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 8 | 4 x 4 x 8 din 6885a parl key stl pl | 1958 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 40 | 4 x 4 x 40 din 6885a parl key stl pl | 150 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 32 | 4 x 4 x 32 din 6885a parl key stl pl | 227 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 16 | 4 x 4 x 16 din 6885a parl key stl pl | 144 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 10 | 4 x 4 x 10 din 6885a parl key stl pl | 329 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 12 | 4 x 4 x 12 din 6885a parl key stl pl | 495 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 20 | 4 x 4 x 20 din 6885a parl keys steel | 61 |
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| MTP | CA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 35 | m4 x 4 x 35 din 6885 a-st parallel key | 69 |
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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 20 | M4xm4x20 parallel key plain 500/box din 6885a | 125 |
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| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 20 | M4x4 x 20 stl parallel (shaft)keys din 6885a | 16 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 32 | M4x4 x 32 parallel key d6885a | 57 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 16 | M4x4 x 16 parallel key d6885a | 100 |
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| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 14 | 4x4 x 14 parallel keybn870 steel plain din 6885a () | 50 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Black Oxide | M4 x 4 x 22 | M4x4 x 22 parallel key d6885a black oxide | 60 |
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| Komar | IL | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4 x 4 | M4x4x25 long square key 316 ss |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 14 | M4x4 x 14 parallel key d6885a | 100 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 16 | M4x4 x 16 parallel key d6885b | 200 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 5 x 5 | feathkey c45c a 5x5x30 din 6885 (W010) | 800 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 5 x 5 | feathkey c45c a 5x5x22 din 6885 | 500 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 5 x 5 | feathkey c45c b 5x5x25 din 6885 | 600 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 5 x 5 | feathkey c45c a 5x5x14 din 6885 (W010) | 4,424 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4.762 x 4.762 x 12 | m4.762x4.762x12 st. machine key 8630 steel chamfered 4.762x4.762x1 din 867g | inquire |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 6 x 6 | feathkey c45c a 6x6x20 din 6885 (W010) | 1,000 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 6 x 6 | feathkey c45c a 6x6x50 din 6885 (W010) | 500 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 6 x 200 | mb4x6x200 shaft key steel plain din 6885 | inquire |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 8 x 7 | feathkey c45c a 8x7x80 din 6885 (W010) | 300 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 8 x 7 | feathkey c45c a 8x7x30 din 6885 (W010) | 520 |
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| Wurth | Ont | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 8 x 7 | feathkey din6885 c45c a 8x7x22 | 387 |
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| Wurth | Ont | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 8 x 7 | feathkey din6885 c45c a 8x7x45 | 700 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 8 x 7 | feathkey c45c a 8x7x20 din 6885 (W010) (W010) (W010) | 2,490 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 10 x 8 | feathkey c45c a 10x8x45 din 6885 (W050) | 2,451 |
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| Wurth | Ont | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 10 x 8 | feathkey din6885 c45c a 10x8x60 | 150 |
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| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 10 | 4 x 4 x 10 fitting key carbon steel din 6885 | 100 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 12 | shaft key din 6885 steel plain | 1666 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 12 x 8 | feathkey c45c a 12x8x56 din 6885 | 175 |
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| Wurth | Ont | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 14 x 9 | feathkey din6885 c45c a 14x9x75 | 195 |
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| MTP | CA | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M4 x 14 | m 4 x 14 6885-a2 s.s parallel keys | 200 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 16 | shaft key din 6885 steel plain | 2170 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 16 x 10 | feathkey c45c a 16x10x70 din 6885 (W010) | 200 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 16 x 10 | feathkey c45c b 16x10x36 din 6885 (W010) | 218 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 18 x 11 | feathkey c45c a 18x11x180 din 6885 (W010) | 80 |
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| Wurth | Ont | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 20 x 12 | feathkey din6885 c45c b 20x12x125 | 20 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 20 | shaft key din 6885 steel plain | 43 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 20 x 12 | feathkey c45c a 20x12x60 din 6885 (W020) | 62 |
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| WDMB | IA | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 20 x 12 | feathkey c45c a 20x12x90 din 6885 (W010) | 50 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M40 x 22 x 115 | mb40x22x115 shaft key steel plain din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | Steel | Plain | M45 x 25 x 250 | 45 x 25 x 250 din 6885 a plain finish parallel key with round ends | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 30 | shaft key din 6885 steel plain | inquire |
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| IPC | VA | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 30 | M4x30 sq. key one end rnd. c of c req. per mes-0007 spec | 5 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 36 | shaft key din 6885 steel plain | 4 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 10 | shaft key din 6885 steel plain | 902 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 14 | shaft key din 6885 steel plain | 1662 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 18 | a4x4x18 shaft key din 6885 steel plain | 80 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 25 | shaft key din 6885 steel plain | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 32 | shaft key din 6885 steel plain | 207 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 40 | shaft key din 6885 steel plain | 42 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 50 | shaft key din 6885 steel plain | 1 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 x 4 x 8 | shaft key din 6885 steel plain | 516 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | M4 | 4mx4mx14 long machine key round edges steel undersized din 6885 | 50 |
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| Spencer | OH | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M4.76 x 4.76 x 31 | m4.76 x 4.76 x 31 s/s a4 din 6885 machine key form a | 115 |
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