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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 
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 key14
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CenturyFLMachine Key (Square & Rectangular)SteelPlain1/4 x 1 1/21/4 x 1 1/2 square key (STEEL) (STEEL) 180
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CenturyFLMachine Key (Square & Rectangular)SteelPlain1/4 x 1 3/41/4 x 1 3/4 square key (STEEL) (STEEL) 100
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NAPPCOTXMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 3/41/4x1/4x3/4l square key plain ansi b17.1 (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS) (600-SPECIAL CUSTOMER PRODUCTS)319
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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 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) (60-KEYS and KEY TOOLS)9
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HayesCAMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 3/4ms20066-250 1/4 x 1/4 x 3/4 gr c keystock steel300
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NAPPCOTXMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 1/21/4x1/4x1-1/2 square keys (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) (60-KEYS and KEY TOOLS)103
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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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EndriesWIMachine Key (Square & Rectangular)SteelPlain1/4x1/4x1 t-304 square machine key undersized |150
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EndriesWIMachine Key (Square & Rectangular)SteelPlain1/4x3/4 square machine key undersized plain457
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EndriesWIMachine Key (Square & Rectangular)SteelPlain1/4x.69 square key1000
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EndriesWIMachine Key (Square & Rectangular)SteelPlain1/4 x 11/4x1 c1018 square machine key undersized plain351
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EndriesWIMachine Key (Square & Rectangular)SteelPlain1/4 x 7/81/4x7/8 square machine key undersized plain1248
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EndriesWIMachine Key (Square & Rectangular)SteelPlain1/4 x 1 3/41/4x1-3/4 square key radial ends oiled400
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EndriesWIMachine Key (Square & Rectangular)SteelPlain1/4 x 21/4x2 sq machine key200
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EndriesWIMachine Key (Square & Rectangular)316, 317, A4 StainlessPlain1/4 x 1 1/41/4x1-1/4 316 stainless steel square machine key80
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ManscoMIMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 3/161/4x1/4x1-3/16 square key pln232
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ManscoMIMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 3/41/4x1/4x1-3/4 square key pln250
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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 end375
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CenturyNYMachine Key (Square & Rectangular)SteelPlainms20066-207 ms20066-207 key square 1/4 x 1/4 x 1-1/8 lg5
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CenturyNYMachine Key (Square & Rectangular)SteelPlain1/4 x 1 1/2 square key steel180
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CenturyNYMachine Key (Square & Rectangular)SteelPlain1/4 x 1 3/4 square key steel100
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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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LibertyILMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 12 long square key carbon steel plain2
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LibertyILMachine Key (Square & Rectangular)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4 square key (+0/-.0002) x 1-61/64 overall length form b 18-8 stainless steel1
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Field FasILMachine Key (Square & Rectangular)SteelPlain1/4 x 5/16 x 1 3/41/4x5/16x1 3/4 rectangular key oversized alloy stl rc40-50 heat treat pln53
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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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Field FasILMachine Key (Square & Rectangular)SteelPlain1/4 x 5/16 x 11/4x5/16x1 rectangular key rd end on 5/16 dimension oversize alloy stl rc 40-50 pln204
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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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SWACOOHMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 12sq key 1/4x1/4x12 cs pln6
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SWACOOHMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 1/21/4x1/4x1 1/2 cut key beveled400
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SWACOOHMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 3/41/4x1/4x1 3/4 cut key388
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SWACOOHMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 21/4x1/4x2 cut key40
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SWACOOHMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 1/21/4x1/4x1 1/2 cut key a round50
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SWACOOHMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 21/4x1/4x2 cut key a round50
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SWACOOHMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 31/4x1/4x3 cut key87
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SWACOOHMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 1/41/4x1/4x1 1/4 cut machine key +.001/.000499
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SWACOOHMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 11/4x1/4x1 cut key401
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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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IPCVAMachine Key (Square & Rectangular)SteelPlain1/4 x 31/4x3 sq. key one end rnd. c of c req. per mes-0007 spec (jg1-1/4x48)168
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IPCVAMachine Key (Square & Rectangular)SteelPlain1/4 x 31/4x3 sq. key rnd ends c of c req. jf1-1/4x48) per mes-0007 spec115
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IPCVAMachine Key (Square & Rectangular)SteelPlain1/4 x 2 3/161/4x2 3/16 square key round ends c of c req. per mes-0007 spec (jf1-1/4x35)204
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IPCVAMachine Key (Square & Rectangular)SteelPlain1/4 x 1 1/161/4x1 1/16 sq. key one end rnd. c of c req. per mes-0007 spec (jg1-1/4x17)91
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HodellOHMachine Key (Square & Rectangular)SteelPlain1/4 x 2 1/41/4 sqx2 1/4 machinery key both ends round plain1
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WDMBIAMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 1 7/8key mach us sq b 1/4x1/4x1 7/8 (W050)653
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WDMBIAMachine Key (Square & Rectangular)SteelPlain1/4 x 3 1/4key square 1018 1/4x3 1/4 (W020) (W020)3,776
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WDMBIAMachine Key (Square & Rectangular)SteelPlain1/4 x 1key mach sqr b st (pl) 1/4x1 drw269
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WDMBIAMachine Key (Square & Rectangular)SteelPlain1/4 x 2 1/8key mach sqr under st (pl) 1/4x2 1/8400
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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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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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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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SonfastPAMachine Key (Square & Rectangular)300 Stainless (A1,A2, 18-8,304,310 etc.)Zinc/Clear1/4 x 1 5/81/4x1-5/8 straight pin square end asme b18.8.2 low carb steel zinc20,620
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NAPPCOTXMachine Key (Square & Rectangular)SteelZinc/Clear1/4 x 1/4 x 361/4x1/4x36 square key zp rohs9
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NAPPCOTXMachine Key (Square & Rectangular)SteelPlain1/4 x 1/4 x 3/41/4x1/4x3/4l square key plain ansi b17.1319
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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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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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