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1/4 Machine Keys
Machine Keys, or Parallel 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.
90 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 | |
| Century | FL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 1/8 | ms20066-207 ms20066-207 key square 1/4 x 1/4 x 1-1/8 lg | 5 |
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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 | 274 |
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| Jackson | MS | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 | ... key machine square | 66 |
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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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| 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) | Plain | 1/4 x 7/32 x 4 1/2 | 1/4x7/32x4-1/2 rectangular machine key | 14 |
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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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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 | 1/4x2 square machine key +.001/-.000 | 1611 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 7/8 | 1/4x7/8 square machine key radial ends plain undersized | 50 |
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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4x.69 square key | 1000 |
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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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| 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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| 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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| 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 | 174 |
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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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| OneMonroe | NC | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 x 1 1/4 | 1/4 x 1/4 x 1-1/4 grade 1018 plain undersized form a machine key | 30 |
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| OneMonroe | NC | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 | key 1/4 sq. x 1.00 lg form b carbon steel | 50 |
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| Alma Bolt | MI | Machine Key (Square & Rectangular) | Plain | 1/4 x 1/4 x 1 1/2 | 1/4 x 1/4 x 1 1/2 square | machine key plain | 743 |
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| Alma Bolt | MI | Machine Key (Square & Rectangular) | Plain | 1/4 x 1 1/2 | 1/4 x 1 1/2 | gib head machinery key | 64 |
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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 | 1019 |
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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 3/4 | square key | 130 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 | square key | 1,000 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3 | square key | 150 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 | square key | 50 |
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| Liberty | IL | Machine Key (Square & Rectangular) | Steel | Zinc/Clear | 1/4 x 12 | square key | 6 |
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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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| 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 | 16 |
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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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| 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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| 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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| 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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| 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 6 | 1/4 x 6 square key undersize 303 ss | 106 |
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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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| 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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| 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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| 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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| 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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| Endries | WI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 2 | 1/4x2 sq machine key | 200 |
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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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| 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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| 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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| 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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| 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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| 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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| 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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| Mansco | MI | Machine Key (Square & Rectangular) | Steel | Pla in | 1/4 x 1/4 x 1 3/16 | 1/4x1/4x1-3/16 square key pln | 232 |
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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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| 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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| 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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| 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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| 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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| MidStates | MI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1/4 | sq machinery key 3-1/4in | 485 |
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| MidStates | MI | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 3/16 | sq machinery key 1-1/4in | 4 |
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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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| Revcar | VA | Machine Key (Square & Rectangular) | Steel | Plain | 1/4 x 1 1/4 | sq key sq ends | 49,641 |
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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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| 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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