Machine Keys, Plain

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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SupplierLocTypeMaterialFinishSizeDescriptionQty 
CenturyFLMachine Key (Square & Rectangular)SteelPlain1/4 x 1 1/21/4 x 1 1/2 square key180
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CenturyFLMachine Key (Square & Rectangular)SteelPlainms20066-76250
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CenturyFLMachine Key (Square & Rectangular)SteelPlain351298 key square 3/16 x 3/16 rnd ends140
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CenturyFLMachine Key (Square & Rectangular)SteelPlain.37.376/.375 x 1.51/1.45 sq key rd ends23
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CenturyFLMachine Key (Square & Rectangular)SteelPlainbossard bn870-5x5/18100
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CenturyFLMachine Key (Square & Rectangular)SteelPlain1/8 x 3/41/8 x 3/4 square key171
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CenturyFLMachine Key (Square & Rectangular)SteelPlain1/8 x 121/8 x 12 square key15
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CenturyFLMachine Key (Square & Rectangular)SteelPlain3/16 x 13/16 x 1 square key steel895
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CenturyFLMachine Key (Square & Rectangular)SteelPlain3/16 x 7/83/16 x 7/8 square key10
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CenturyFLMachine Key (Square & Rectangular)SteelPlain3/16 x 1 0.003/16 x 1 square key +0.00-.0026
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CenturyFLMachine Key (Square & Rectangular)SteelPlain3/16 x 1 3/83/16 x 1 3/8 square key100
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CenturyFLMachine Key (Square & Rectangular)SteelPlain1/4 x 1 3/41/4 x 1 3/4 square key20
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CenturyFLMachine Key (Square & Rectangular)SteelPlain1/2 x 1 3/41/2 x 1 3/4 square key65
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CenturyFLMachine Key (Square & Rectangular)SteelPlain3/4 x 3/4 x 63/4 x 3/4 x 6 square key steel25
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CenturyFLMachine Key (Square & Rectangular)SteelPlain5/8 x 5/8 x 2 1/25/8 x 5/8 x 2 1/2 square key steel50
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CenturyFLMachine Key (Square & Rectangular)SteelPlainM3 x 3din 6885a m3 x 3mm x 12mm300
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Purchase MOMachine Key (Square & Rectangular)SteelPlainM5 x 5 x 14m5 x 5 x 14 machine key w/ rounded ends stl plain100
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MMCCILMachine Key (Square & Rectangular)SteelPlainM12 x 8 x 90shaft key din 6885 steel plaininquire
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MMCCILMachine Key (Square & Rectangular)SteelPlainM4 x 4 x 30shaft key din 6885 steel plaininquire
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MMCCILMachine Key (Square & Rectangular)SteelPlainM18 x 11 x 90shaft key steel plain a18x11x90 din 6885inquire
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MMCCILMachine Key (Square & Rectangular)SteelPlainM12 x 8 x 75shaft key din 6885 steel plaininquire
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MMCCILMachine Key (Square & Rectangular)316, 317, A4 StainlessPlainM10 x 8 x 50shaft key a4 a10x8x50 din 6885 a4 s/s class 12.9 plain5
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MMCCILMachine Key (Square & Rectangular)316, 317, A4 StainlessPlainM12 x 8 x 50shaft key a4 a12x8x50 din 6885 a4 s/s class 12.9 plaininquire
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MMCCILMachine Key (Square & Rectangular)SteelPlainM3 x 3 x 6shaft key din 6885 steel plaininquire
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MMCCILMachine Key (Square & Rectangular)SteelPlainM3 x 3 x 10shaft key din 6885 steel plain332
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MMCCILMachine Key (Square & Rectangular)SteelPlainM3 x 3 x 12shaft key din 6885 steel plain87
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MMCCILMachine Key (Square & Rectangular)SteelPlainM4 x 4 x 8shaft key din 6885 steel plain516
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MMCCILMachine Key (Square & Rectangular)SteelPlainM3 x 3 x 36shaft key din 6885 steel plain679
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MMCCILMachine Key (Square & Rectangular)SteelPlainM3 x 4 x 18shaft key din 6885 steel plaininquire
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Purchase MOMachine Key (Square & Rectangular)SteelPlain3/16 x 13/16 x 1 square key211
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TSFTXMachine Key (Square & Rectangular)SteelPlainM3 x 3 x 6square key 3mm x 3mm x 6mm lg plain150
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NAPPCOTXMachine Key (Square & Rectangular)SteelPlainM5 x 5 x 25square key 5mm x 5mm x 25mm1800
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NAPPCOTXMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 3/41/4x1/4x3/4l square key plain ansi b17.1900
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NAPPCOTXMachine Key (Square & Rectangular)SteelPlainM5 x 5 x 14square key 5mm x 5mm x 14mm1800
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NAPPCOTXMachine Key (Square & Rectangular)SteelPlain1/8 x 1/8 x 1/21/8x1/8x1/2 steel undersized sq key750
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NAPPCOTXMachine Key (Square & Rectangular)SteelPlainM8 x 7 x 044.458mm x 7mm x 044.45mm retangular square key15
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NAPPCOTXMachine Key (Square & Rectangular)SteelPlainM20 x 12 x 11220mm x 12mm x 112mm rectangular square machine key9
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NAPPCOTXMachine Key (Square & Rectangular)SteelPlain1414mx9x51mm square key plain6
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NAPPCOTXMachine Key (Square & Rectangular)300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM5 x 195mm x 19mm square key 18-8 stainless stl744
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YANKEENHMachine Key (Square & Rectangular)SteelPlainM4 x 4 x 20m4 x 4 x 20 parallel key w/round end-plain22
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FTSOHMachine Key (Square & Rectangular)SteelPlainM10x8/x100 parallel key stl din 6885a30
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FTSOHMachine Key (Square & Rectangular)SteelPlainM10x8/x32 parallel key prnt stl din 6885a392
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FTSOHMachine Key (Square & Rectangular)SteelPlainM10x8/x56 parallel key stl din 6885a28
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FTSOHMachine Key (Square & Rectangular)SteelPlainM14x9/x 38 parallel key sq end stl75
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FTSOHMachine Key (Square & Rectangular)SteelPlainM2x2/x14 parallel key stl din 6885a100
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FTSOHMachine Key (Square & Rectangular)SteelPlainM2x2/x20 parallel key stl din 6885a238
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FTSOHMachine Key (Square & Rectangular)SteelPlainM2x2/x6 parallel key stl din 6885a229
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FTSOHMachine Key (Square & Rectangular)SteelPlainM2x2/x8 parallel key stl din 6885a202
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FTSOHMachine Key (Square & Rectangular)SteelPlainM3x3/x14 parallel key stl din 6885a255
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FTSOHMachine Key (Square & Rectangular)SteelPlainM3x3/x20 parallel key stl din 6885a161
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FTSOHMachine Key (Square & Rectangular)SteelPlainM3x3/x 7 parallel key sq end print stl140
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JacksonMSMachine Key (Square & Rectangular)SteelPlain3/16 x 1 1/4key machine square43
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JacksonMSMachine Key (Square & Rectangular)SteelPlain5/16 x 3/8 x 12key machine rectangle26
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JacksonMSMachine Key (Square & Rectangular)SteelPlain5/16 x 1/2 x 12key machine rectangle3
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JacksonMSMachine Key (Square & Rectangular)SteelPlain3/8 x 5/8 x 12key machine rectangle6
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JacksonMSMachine Key (Square & Rectangular)SteelPlain1/2 x 3/4 x 121/2 x 3/4 x 12 key machine rectangle high carbon steel bilateral astm a29 plain finish9
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CenturyFLMachine Key (Square & Rectangular)SteelPlainms20066-13865
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WurthOntMachine Key (Square & Rectangular)316, 317, A4 StainlessPlainM10 x 8 x 63feathkey din6885 a a4 10x8x6340
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WurthOntMachine Key (Square & Rectangular)316, 317, A4 StainlessPlainM6 x 6 x 20feathkey din6885 a a4 6x6x20149
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WurthOntMachine Key (Square & Rectangular)316, 317, A4 StainlessPlainM10 x 8 x 60feathkey din6885 a a4 10x8x6098
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WurthOntMachine Key (Square & Rectangular)SteelPlainM45 x 8 x 7feathkey din6885 c45c a 8x7x22387
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WurthOntMachine Key (Square & Rectangular)SteelPlainM45 x 8 x 7feathkey din6885 c45c a 8x7x45700
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WurthOntMachine Key (Square & Rectangular)SteelPlainM45 x 14 x 9feathkey din6885 c45c a 14x9x75195
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WurthOntMachine Key (Square & Rectangular)SteelPlainM45 x 10 x 8feathkey din6885 c45c a 10x8x60150
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WurthOntMachine Key (Square & Rectangular)SteelPlainM45 x 20 x 12feathkey din6885 c45c b 20x12x12520
WurthOntMachine Key (Square & Rectangular)SteelPlain7/16 x 5/8 x 3key rect over st 1045 (pl) 7/16x5/8x39
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Wurth AdaMNMachine Key (Square & Rectangular)SteelPlainM5 x 5 x 45feathkey din6885 c45k a 5x5x451,500
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Wurth AdaMNMachine Key (Square & Rectangular)SteelPlainM4 x 4 x 14feathkey din6885 c45k a 4x4x141,500
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CenturyFLMachine Key (Square & Rectangular)SteelPlainM8 x 7din 6885a m8 x 7mm x 36mm100
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CenturyFLMachine Key (Square & Rectangular)300 Stainless (A1,A2, 18-8,304,310 etc.)PlainM6 x 6 x 12din 6885 m6x6x12mm sq key stock 300 ss63
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Irwin IndOntMachine Key (Square & Rectangular)SteelPlain5 x 5 x 205 x 5 x 20mm steel shaft key382
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Irwin IndOntMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 1018 10451/4x1/4x1 machine key 1018-1045 steel51
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Irwin IndOntMachine Key (Square & Rectangular)SteelPlainM3 x 3 x 103mm x 3mm x 10mm parallel key c45k steel plain190
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Irwin IndOntMachine Key (Square & Rectangular)SteelPlainM5 x 5 x 20m5 x 5 x 20 din 6885b parallel key90
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RCFastAZMachine Key (Square & Rectangular)SteelPlainMS20066-76inquire
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HewesNYMachine Key (Square & Rectangular)SteelPlain3/32 x 5/8sqr keysundersize stl150
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/8 x 1/2sqr key208
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/8 x 5/8sqr keysundersize stl545
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/8 x 1 1/4sqr key100
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/8 x 1sqr key402
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HewesNYMachine Key (Square & Rectangular)SteelPlain3/16 x 2sqr keys90
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HewesNYMachine Key (Square & Rectangular)SteelPlain3/16 x 1 1/8sqr keysundersize stl140
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 3/4sqr keysundersize stl120
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 2 7/8sqr keyprint# 843-4-46length tolerance +/-.010175
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 1 1/2sqr key194
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 2 1/8sqr keysundersize stl110
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 3/4sqr keyprint #843-4-28159
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 1 3/16sqr keysundersize stl110
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 1 1/4sqr key250
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 3 3/8sqr keysundersize120
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 1 1/4sqr keysundersize stl200
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MasFasCorpNVMachine Key (Square & Rectangular)SteelPlainM8 x 7 x 358mm x7mm x35mm keystock w/ rounded ends steel din6885ainquire
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MasFasCorpNVMachine Key (Square & Rectangular)SteelPlainM8 x 7 x 708mm x 7mm x 70mm keystock w/rounded ends steel din6885ainquire
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MasFasCorpNVMachine Key (Square & Rectangular)SteelPlainms20066-373inquire
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MasFasCorpNVMachine Key (Square & Rectangular)SteelPlainms20066-376 certifiedinquire
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MtrcSpecCAMachine Key (Square & Rectangular)SteelPlainM5 x 5 x 20parallel key din 6885stock
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MtrcSpecCAMachine Key (Square & Rectangular)SteelPlainM6 x 6 x 20parallel key din 6885stock
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MtrcSpecCAMachine Key (Square & Rectangular)SteelPlainM4 x 4parallel key 12 long din 6885stock
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MtrcSpecCAMachine Key (Square & Rectangular)SteelPlainM5 x 5parallel key 12 long din 6885stock
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MtrcSpecCAMachine Key (Square & Rectangular)SteelPlainM3 x 3 x 10M3x 3x10 parallel key din 6885stock
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MtrcSpecCAMachine Key (Square & Rectangular)SteelPlainM3 x 3parallel key 12 long din 6885stock
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MtrcSpecCAMachine Key (Square & Rectangular)SteelPlainM8 x 7parallel key 63 overall din 6885stock
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EurolinkSCMachine Key (Square & Rectangular)316, 317, A4 StainlessPlain5 x 5 x 25 din 6885 a a4 stainless steel parallel key with round ends parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)316, 317, A4 StainlessPlain6 x 6 x 20 din 6885 a a4 stainless steel parallel key with round ends parallel key with round ends100
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EurolinkSCMachine Key (Square & Rectangular)316, 317, A4 StainlessPlainM14 x 9 x 5614 x 9 x 56 din 6885 a a4 stainless steel parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)SteelPlainM5 x 5 x 255 x 5 x 25 din 6885 a plain finish parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)316, 317, A4 StainlessPlainM5 x 5 x 145 x 5 x 14din 6885 a a4 stainless steel parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)SteelPlainM25 x 16 x 16025 x 16 x 160 din 6885 a plain finish parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)SteelPlainM10 x 8 x 5010 x 8 x 50 din 6885 a plain finish parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)SteelPlainM70 x 36 x 40070 x 36 x 400 din 6885 a plain finish parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)316, 317, A4 StainlessPlainM14 x 9 x 12514 x 9 x 125 din 6885 a a4 stainless steel parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)316, 317, A4 StainlessPlainM8 x 7 x 1008 x 7 x 100 din 6885 a a4 stainless steel parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)SteelPlainM4 x 4 x 124 x 4 x 12 din 6885 a plain finish parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)SteelPlainM36 x 20 x 16036 x 20 x 160 din 6885 a plain finish parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)316, 317, A4 StainlessPlainM10 x 8 x 4010 x 8 x 40 din 6885 a a4 stainless steel parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)SteelPlainM8 x 7 x 288 x 7 x 28 din 6885 a plain finish parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)SteelPlainM10 x 8 x 3010 x 8 x 30 din 6885 a plain finish parallel key with round endsinquire
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EurolinkSCMachine Key (Square & Rectangular)SteelPlainM12 x 8 x 10012 x 8 x 100 din 6885 a plain finish parallel key with round endsinquire
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