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5/8 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 
CenturyFLMachine Key (Square & Rectangular)SteelPlain5/8 x 5/8 x 2 1/25/8 x 5/8 x 2 1/2 square key steel 50
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NAPPCOTXMachine Key (Square & Rectangular)SteelZinc/Clear5/8 x 5/8 x 365/8 x 5/8x 36 square key zp rohs (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS) (60-KEYS and KEY TOOLS)2
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MidStatesMIMachine Key (Square & Rectangular)SteelPlain5/8 x 5/8machinery key-both ends rnd 2-1
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WDMBIAMachine Key (Square & Rectangular)SteelPlain5/8 x 5/8 x 1 1/2machine key us sq b haround 5/8x5/8x1 1/2 (W050)121
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FACCAOntMachine Key (Square & Rectangular)SteelPlain5/8 x 5/8 x 8 1/2standard gib head machine key 5/8 x 5/8 x 8 1/2 c-1018 steel plain192
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NAPPCOTXMachine Key (Square & Rectangular)SteelZinc/Clear5/8 x 5/8 x 365/8x5/8x 36 square key zp rohs2
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SWACOOHMachine Key (Square & Rectangular)SteelPlain5/8 x 5/8 x 12sq key 5/8x5/8x12 cs pln27
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ManscoMIMachine Key (Square & Rectangular)SteelPlain5/8 x 5/8 x 12square key 1/box6
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CenturyNYMachine Key (Square & Rectangular)SteelPlain5/8 x 5/8 x 2 1/2 square key steel50
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8 x 17 1/25/8x17-1/2 square key +.001-.00032
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8 x 2.255/8x2.25 square machine key undersized plain200
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Field FasILMachine Key (Square & Rectangular)SteelPlain5/8 x 2 1/45/8x2 1/4 square key 1018 stl pln4,556
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8 x 3 1/25/8x3-1/2 1018 steel square machine key undersized plain140
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WurthINMachine Key (Square & Rectangular)SteelPlain5/8 x 3 1/25/8 x 3-1/2 square key class 2 c1018 w/ chamfered ends per print 8212 rev 06505
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8 x 4 1/45/8x4-1/4 square machine key undersized plain20
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8 x 5 1/25/8x5-1/2 square machine key undersized plain13
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8 x 13 3/45/8x13-3/4 square machine key oversized +.001-.000 plain42
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8 x 4 .0015/8x4 in. square key +.001-.00038
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8 x 12 .0015/8x12 square key +.001-.00052
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8 x 15 .0015/8x15 square key +.001-.00041
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8 x 20 .0015/8x20 square key .001-.00020
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8x5 square machine key undersized plain64
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8x3-15/16 1045 steel square machine key plain brinell hardness number 195-2301012
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EndriesWIMachine Key (Square & Rectangular)SteelPlain5/8x2-1/16 square machine key undersized plain42
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