FCH News

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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Buy Machine Keys from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
EndriesWIMachine Key (Square & Rectangular)SteelPlain4 x 4 x 16 1045/454x4x16mm c1045/c45 parallel key plain with radius ends din 6885a4642
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WDMBIAMachine Key (Square & Rectangular)SteelPlain40 3/8 x 4 3/8key mach sqr b rc40 (pl) 3/8x4 3/8 drw (W010)1997
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CenturyNYMachine Key (Square & Rectangular)SteelPlainms20066-98 q4b key7
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