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3/4 inch length 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.

15 results, (click on any line for more information)

Buy Machine Keys from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
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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EndriesWIMachine Key (Square & Rectangular)SteelPlain1/4x3/4 square machine key undersized plain457
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EndriesWIMachine Key (Square & Rectangular)SteelPlain1/2x3/4x4-1/4 c1018 rectangular machine key plain undersized12
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CenturyFLMachine Key (Square & Rectangular)SteelPlain3/4 x 3/4 x 63/4 x 3/4 x 6 square key steel 25
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CenturyNYMachine Key (Square & Rectangular)SteelPlain3/4 x 3/4 x 6in square key steel25
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Field FasILMachine Key (Square & Rectangular)SteelPlain1/4 x 3/41/4x3/4 square key oversize rd ends alloy stl rc40-50 pln140
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SWACOOHMachine Key (Square & Rectangular)SteelPlain3/4 x 3/4 x 12sq key 3/4x3/4x12 cs pln34
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MidStatesMIMachine Key (Square & Rectangular)SteelPlain3/4 x 3/43/4 x 3/4 machinery key-both ends rnd 5-1
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IPCVAMachine Key (Square & Rectangular)SteelPlain3/16 x 3/43/16x3/4 sq. key rnd ends c of c req. per mes spec 007 (jf1-3/16x12)384
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IPCVAMachine Key (Square & Rectangular)SteelPlain1/8 x 3/41/8x3/4 sq. key one end rnd. c of c req. per mes-0007 spec (jg1-1/8x12)159
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IPCVAMachine Key (Square & Rectangular)SteelPlain3/16 x 3/43/16x3/4 sq. key one end rnd. including mil-test report identifying the material heat treat tensile and yield per mes-0007 spec (jg1-3/16x12)135
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WDMBIAMachine Key (Square & Rectangular)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/16 x 3/4key mach square b under sst 303 3/16x3/4 (W0C0)5,040
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AFIFLMachine Key (Square & Rectangular)SteelPlain3/16 x 3/43/16x3/4 square key rounded end st102
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OBRIENOHMachine Key (Square & Rectangular)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/8 x 3/41/8 sqx3/4 ss key #504-008-008-048293
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HewesNYMachine Key (Square & Rectangular)SteelPlain1/4 x 3/4sqr keysundersize stl120
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