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M3 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.
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| Buy Machine Keys from one of our FCH Network Members | ||||||||
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| Supplier | Loc | Type | Material | Finish | Size | Description | Qty | |
| Irwin Ind | Ont | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 10 | 3mm x 3mm x 10mm parallel key c45k steel plain | 190 |
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| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 8 | 3x3 x 8 parallel key bn870 steel plain din 6885a | 300 |
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| MTP | CA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 20 | m 3 x 3 x 20 din 6885 a-st parallel key | 500 |
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| MTP | CA | Machine Key (Square & Rectangular) | 300 Stainless (A1,A2, 18-8,304,310 etc.) | Plain | M3 x 3 x 10 | m 3 x 3 x 10 din 6885a4 s.s parallel keys | 600 |
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| MTP | CA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 14 | m 3 x 3 x 14 din 6885 a-st parallel key | stock |
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| Century | NY | Machine Key (Square & Rectangular) | Steel | Plain | 3 x 3 x 8 parallel key bn870 steel plain | 300 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 | 3mx3mx10 long machine key round edges steel undersized din 6885 | 90 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 10 | 3x10 long square machine key rounded edges | 20 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 20 | M3x3 x 20 parallel key d6885a | 199 |
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| SWACO | OH | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 12 | M3x3 x 12 parallel key d6885a | 299 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 6 | shaft key din 6885 steel plain | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 10 | shaft key din 6885 steel plain | 332 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 12 | shaft key din 6885 steel plain | 87 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 36 | shaft key din 6885 steel plain | 679 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 4 x 18 | shaft key din 6885 steel plain | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 16 | shaft key din 6885 steel plain | 196 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 200 | shaft key din 6885 steel plain | 143 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 4 x 22 | shaft key din 6885 steel plain | 297 |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 20 | a3x3x20 shaft key din 6885 steel plain | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 8 | a3x3x8 shaft key din 6885 steel plain | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 200 | b3x3x200 shaft key steel plain din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 18 | ma3x3x18 shaft key c45 steel din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 25 | b3x3x25 shaft key steel plain din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 12 | b3x3x12 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 | M3 x 3 x 6 | a3x3x6 shaft key a2 din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 5 x 200 | mb3x5x200 shaft key steel plain din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 25 | ma3x3x25 shaft key steel plain din 6885 | inquire |
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| MMCC | IL | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M3 x 3 x 7.5 | ma3x3x7.5 shaft key a4 plain din 6885 | inquire |
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| FTS | OH | Machine Key (Square & Rectangular) | Steel | Plain | M3 | x3/x14 parallel key stl din 6885a | 255 |
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| FTS | OH | Machine Key (Square & Rectangular) | Steel | Plain | M3 | x3/x20 parallel key stl din 6885a | 161 |
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| FTS | OH | Machine Key (Square & Rectangular) | Steel | Plain | M3 | x3/x 7 parallel key sq end print stl | 140 |
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| MtrcSpec | CA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 10 | M3x 3x10 parallel key din 6885 | stock |
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| MtrcSpec | CA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 | M3x3 parallel key 12 long din 6885 | stock |
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| TSF | TX | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 6 | square key 3mm x 3mm x 6mm lg plain | 150 |
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| Eurolink | SC | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M3 x 3 x 18 | 3x3 x 18 a a4 stainless steel parallel key with round ends din 6885 | inquire |
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| Eurolink | SC | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 8 | 3x3 x 8 a plain finish parallel key with round ends din 6885 | 983 |
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| Eurolink | SC | Machine Key (Square & Rectangular) | 316, 317, A4 Stainless | Plain | M3 x 3 x 10 | 3x3 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 | M3 x 3 x 10 | 3 x 3 x 10 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 | M3 x 3 x 16 | 3 x 3 x 16 din 6885 a a4 stainless steel parallel key with round ends | inquire |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 16 | 3 x 3 x 16 din 6885a parl key stl pl | 45 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 18 | 3 x 3 x 18 din 6885a parl key stl pl | 50 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 25 | 3 x 3 x 25 din 6885a parl key stl pl | 66 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 63 | 3 x 3 x 63 din 6885a parl key stl pl | 88 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 25 | 3 x 3 x 25 din 6885b parrl key sq end s | 100 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 10 | 3 x 3 x 10 din 6885a parl key stl pl | 243 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 20 | 3 x 3 x 20 din 6885a parl key stl pl | 113 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 12 | 3 x 3 x 12 din 6885b parrl key sq end s | 50 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 14 | 3 x 3 x 14 din 6885a parl key stl pl | 115 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 32 | 3 x 3 x 32 din 6885b parrl key sq end s | 200 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 12 | 3 x 3 x 12 din 6885a parl key stl pl | 237 |
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| MSTC | MA | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 6 | 3 x 3 x 6 din 6885a parl key stl pl | 157 |
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| Hewes | NY | Machine Key (Square & Rectangular) | Steel | Plain | M3 x 3 x 10 | M3x3 x 10 parallel key bn 870 | 42 |
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