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.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
BHAMALMachine Key (Square & Rectangular)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4 x 1/4 x 1 3/41/4 x 1/4 x 1 3/4 machine key stainless150
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BHAMALMachine Key (Square & Rectangular)SteelPlain1/4 x 11/4 x 1 sq.machine key92
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JacksonMSMachine Key (Square & Rectangular)SteelPlain1/4 x 2... key machine square66
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JacksonMSMachine Key (Square & Rectangular)SteelZinc/Clear1/4 x 3/8 x 12rectangle key15
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SWACOOHMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 12sq key 1/4 x 1/4 x 12 cs pln190
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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)SteelPlain1/4 x 1 3/41/4 x 1 3/4 square key20
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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)SteelZinc/Clear1/4 x 1/4 x 361/4 x 1/4 x 36 square key zp rohs54
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MTPCAMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x .7401/4 x 1/4 x .740 steel 1018 undersized key stock sq end121
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WDMBIAMachine Key (Square & Rectangular)SteelPlain1/4 x 1 1/2key mach sqr b under st (pl) 1/4x1 1/2340
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WDMBIAMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 7/8key mach us sq b 1/4x1/4x1 7/8750
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WDMBIAMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 2 1/8key mach us sq b 1/4x1/4x2 1/85
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WDMBIAMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 7key mach us sq b 1/4x1/4x754
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WDMBIAMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 3key mach us sq b 1/4x1/4x324
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WDMBIAMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 2 1/2key mach us sq b hard 1/4x1/4x2 1/21885
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WDMBIAMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1/2key mach us sq b hard 1/4x1/4x1/2110
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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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ManscoMIMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 12square key 1/box1
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HodellOHMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 1/4 501 016 0161/4x1/4x1 1/4 std machine key 501-016-016-116 b.e.s.100
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ManscoMIMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 3/16square key55
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MidStatesMIMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4sq machinery key 3-1/4in485
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MidStatesMIMachine Key (Square & Rectangular)SteelPlain1/4 x 3/16sq machinery key 1-1/4in4
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LibertyILMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 6square key150
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LibertyILMachine Key (Square & Rectangular)SteelPlain1/4 x 1 3/4square key130
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LibertyILMachine Key (Square & Rectangular)SteelPlain1/4 x 1square key1,000
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LibertyILMachine Key (Square & Rectangular)SteelPlain1/4 x 3square key150
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LibertyILMachine Key (Square & Rectangular)SteelPlain1/4 x 2square key50
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LibertyILMachine Key (Square & Rectangular)SteelZinc/Clear1/4 x 12square key6
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ISSCOMOMachine Key (Square & Rectangular)Grade 2Zinc/Clear1/4 x 1/4 x 2 5/8square +.001/.0001590
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ISSCOMOMachine Key (Square & Rectangular)Grade 2Plain1/4 x 1/4 x 3/4square +.001/.000825
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ISSCOMOMachine Key (Square & Rectangular)Grade 2Plain1/4 x 1/4 x 4square-.001/.000525
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ISSCOMOMachine Key (Square & Rectangular)Grade 2Plain1/4 x 1/4 x 1/2square-.001/.000695
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ISSCOMOMachine Key (Square & Rectangular)Grade 2Plain1/4 x 1/4 x 6square-.002/.001247
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ISSCOMOMachine Key (Square & Rectangular)Grade 2Zinc/Clear1/4 x 1/4 x 2square +.001/.000700
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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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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 11/4 x 1 sqr key2
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 21/4x 2 sqr key25
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AFIFLMachine Key (Square & Rectangular)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4 x 1/4 x 5/81/4x1/4x5/8 machine key ss120
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AFIFLMachine Key (Square & Rectangular)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4 x 1/4 x 1/21/4x1/4x1/2 machine key ss237
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AFIFLMachine Key (Square & Rectangular)SteelPlain1/4 x 1 1/41/4x1-1/4 square key c1018 st274
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RevcarVAMachine Key (Square & Rectangular)SteelPlain1/4 x 1 1/4sq key sq ends49,641
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WurthINMachine Key (Square & Rectangular)SteelPlain1/4 x 3 1/41/4 x 3-1/4 square key 1018 steel4,379
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WurthINMachine Key (Square & Rectangular)Grade 2Plain1/4 x 21/4 x 2 square key grade 2 steel pack 50 per poly bag7,016
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TimberlineCOMachine Key (Square & Rectangular)SteelPlain1/4 x 1 3/4sq key st 1/4 x 1-3/4904
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Alma BoltMIMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 3/41/4 x 1/4 x 3/4 square machine key plain1022
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SBSMAMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 9/16machnry key w/2 sq
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SBSMAMachine Key (Square & Rectangular)SteelPlain1/4 x 5/16 x 2 3/4mach rectangular key
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