3/16 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 
NAPPCOTXMachine Key (Square & Rectangular)SteelZinc/Clear3/16 x 3/16 x 363/16 x 3/16 x 36 square key zp rohs5
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SWACOOHMachine Key (Square & Rectangular)SteelPlain3/16 x 3/16 x 12sq key 3/16x3/16x12 cs pln180
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HayesCAMachine Key (Square & Rectangular)SteelPlain3/16 x 3/16 x 3/4ms20066-183 3/16 x 3/16 x 3/4 gr c keystock steel300
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ManscoMIMachine Key (Square & Rectangular)SteelPlain3/16 x 3/16 x 13/163/16x3/16x13/16 square key pln1,018
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ManscoMIMachine Key (Square & Rectangular)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/16 x 3/16 x 3/43/16x3/16x3/4 square key 18-8 s/s w/square ends50
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ManscoMIMachine Key (Square & Rectangular)SteelPlain3/16 x 3/16 x 1 29/323/16x3/16x1-29/32 square key pln50
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ManscoMIMachine Key (Square & Rectangular)SteelPlain3/16 x 23/16x2 square end undersize key gr 1018 low carbon 100/box78
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ManscoMIMachine Key (Square & Rectangular)SteelZinc/Clear3/16 x 3/16 x 12square key triv 1/box16
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NAPPCOTXMachine Key (Square & Rectangular)SteelZinc/Clear3/16 x 3/16 x 363/16x3/16x36 square key zp rohs5
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IRFNJMachine Key (Square & Rectangular)BrassPlain3/16 x 3/16 x 1 1/2long square key1039
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IRFNJMachine Key (Square & Rectangular)BrassPlain3/16 x 3/16 x 1 1/2long square key1039
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LibertyILMachine Key (Square & Rectangular)SteelPlain3/16 x 12square key4
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LibertyILMachine Key (Square & Rectangular)SteelPlain3/16 x 2square key80
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LibertyILMachine Key (Square & Rectangular)SteelPlain3/16 x 1 9/32 x 5/323/16 x 1 9/32 x 5/32 rect. key plain plain K15018N01285
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LibertyILMachine Key (Square & Rectangular)SteelZinc/Clear3/16 x 12square key5
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LibertyILMachine Key (Square & Rectangular)SteelPlain3/16 x 7/8square key2,000
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LibertyILMachine Key (Square & Rectangular)SteelPlain3/16 x 1 3/8square key90
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LibertyILMachine Key (Square & Rectangular)SteelPlain3/16 x 3/16 x 1machine key oversized square ends100
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LibertyILMachine Key (Square & Rectangular)SteelPlain3/16 x 1 1/4square key150
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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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ManscoMIMachine Key (Square & Rectangular)SteelPlain3/16 x 3/16 x 12square key 1/box13
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Purchase MOMachine Key (Square & Rectangular)SteelPlain3/16 x 13/16 x 1 square key211
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JacksonMSMachine Key (Square & Rectangular)SteelPlain3/16 x 1 1/4key machine square43
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MidStatesMIMachine Key (Square & Rectangular)SteelPlain3/16 x 3/16sq machinery key 2-1/22
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MidStatesMIMachine Key (Square & Rectangular)SteelPlain3/16 x 3/16 x .8753/16 x 3/16 x .875 machine key200
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WSBKYMachine Key (Square & Rectangular)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/16 x 1 1/4key mach sqr b under (18-8) 3/16x1 1/412,000
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ISSCOMOMachine Key (Square & Rectangular)Grade 2Plain3/16 x 3/16 x 2 1/8square-.001/.0002000
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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)SteelPlain3/16 x 13/16x 1 sqr key276
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HewesNYMachine Key (Square & Rectangular)SteelPlain3/16 x 1 1/43/16 x 1-1/4 sqr key500
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AFIFLMachine Key (Square & Rectangular)SteelPlain3/16 x 3/43/16x3/4 square key rounded end st102
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TimberlineCOMachine Key (Square & Rectangular)SteelPlain3/16 x 1 1/2sq key undersize 3/16 x 1-1/212
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TimberlineCOMachine Key (Square & Rectangular)SteelPlain3/16 x 1 1/2sq mach key 3/16 x 1-1/2700
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SBSMAMachine Key (Square & Rectangular)SteelPlain3/16 x 3/4machnry key w/2 sq ends
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SBSMAMachine Key (Square & Rectangular)SteelPlain3/16 x 3/16 x .730machnry key w/2 sq
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SBSMAMachine Key (Square & Rectangular)SteelPlain3/16 x 3/16 x 1 3/8machnry key w/2 sq
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