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Machine Keys

Machine keys are parts used to fasten components such as gears, pulleys, sprockets and couplings to rotary shafts. They are used for applications that transmit power in machineries such as motors and reduction drives. Several types of machine keys are available. Parallel keys have the simplest structure. There are also specially shaped varieties such as taper keys and Woodruff keys. Machine keys come in various shapes, such as types with squared-off or rounded ends. There are also product lineups that include models with pre-drilled counterbore holes, taps or the like. Key sizes are defined by JIS standards in Japan. The applicable standard has been revised, so some models are compatible with the new standard and some with the old. The right machine key model should be selected by matching it to the size of the drive unit's shaft and keyway.

Shape

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Brand
Product Series
CAD
Days to Ship
Shape
Width(mm)
Overall Length(mm)
Material
Hole Machining
  • Recommendation

Parallel Keys Straight / Round at One End / Round at Both End

  • Recommendation

Parallel Keys With Center Counterbored Hole

    Parallel Keys

      SEIKI Machine Key, Free Length Series (JIS B 1301)

        Parallel Keys With Tapped Hole

          New JIS Double Round End Key

            Rounded Key

              Parallel Keys - With Counterbore

                Parallel Keys - Blank

                  Parallel Key Stock, New JIS

                    Parallel Keys - With Tapped Hole

                      Parallel Keys - Stainless Steel

                        Parallel Keys  With Counterbores and Tapped Hole

                          Key material (S45C)

                            Parallel Keys Semi-Finished

                              New JIS Parallel Machine Key

                                SEIKI Machine Key, Standard Series (JIS B 1301)

                                  Parallel Keys - With Counterbores and Tapped Hole

                                    New JIS Parallel Key

                                      Tapered Machine Keys with Gib Head

                                        Both Ends Round

                                          Woodruff Key

                                            New JIS Single Round End Key

                                              Parallel Key Both Round Seiki Seisakusho

                                                Parallel Key Both Round Himeno Precision Works, Inc.

                                                  Parallel Keys - With Tapped Counterbore Hole

                                                    Old JIS Parallel Key

                                                      Single-End Rounded Machine Key

                                                        Square Machine Keys

                                                          SEIKI Machine Key Series with Release Tap (JIS B 1301)

                                                            Parallel key both round type (S45C)

                                                              Parallel Key Stock, Former JIS

                                                                Parallel Keys With Tapped Counterbored Hole

                                                                  Single Round Key, Made by SEIKI Manufacturing

                                                                    Parallel Key Seiki Seisakusho

                                                                      Both Ends Square

                                                                        SEIKI Machine Key, Key Material

                                                                          Old JIS Head Gradient Key

                                                                            New JIS Headed Gradient Key, by Himeno Seisakusho

                                                                              Standard Size Key

                                                                              Brand

                                                                              MISUMI

                                                                              MiSUMi Economy80

                                                                              MISUMI

                                                                              MiSUMi Economy80

                                                                              MISUMI

                                                                              SEIKI

                                                                              MISUMI

                                                                              MiSUMi Economy73

                                                                              HIMENO PRECISION

                                                                              OHKITA

                                                                              MISUMI

                                                                              MISUMI

                                                                              OHKITA

                                                                              MISUMI

                                                                              MISUMI

                                                                              MISUMI

                                                                              MiSUMi Economy76

                                                                              TRUSCO NAKAYAMA

                                                                              MISUMI

                                                                              MiSUMi Economy69

                                                                              HIMENO PRECISION

                                                                              SEIKI

                                                                              MISUMI

                                                                              HIMENO PRECISION

                                                                              MISUMI

                                                                              NANKAI INDUSTRY

                                                                              OHKITA

                                                                              HIMENO PRECISION

                                                                              SUNCO

                                                                              SUNCO

                                                                              MISUMI

                                                                              HIMENO PRECISION

                                                                              OHKITA

                                                                              OHKITA

                                                                              SEIKI

                                                                              TRUSCO NAKAYAMA

                                                                              OHKITA

                                                                              MISUMI

                                                                              MiSUMi Economy80

                                                                              SUNCO

                                                                              SUNCO

                                                                              NANKAI INDUSTRY

                                                                              SEIKI

                                                                              SUNCO

                                                                              SUNCO

                                                                              SEIKI

                                                                              Product Series

                                                                              Parallel Keys Straight / Round at One End / Round at Both End

                                                                              Parallel Keys With Center Counterbored Hole

                                                                              Parallel Keys

                                                                              SEIKI Machine Key, Free Length Series (JIS B 1301)【1-10 Pieces Per Package】

                                                                              Parallel Keys With Tapped Hole

                                                                              New JIS Double Round End Key【1-100 Pieces Per Package】

                                                                              Rounded Key

                                                                              Parallel Keys - With Counterbore

                                                                              Parallel Keys - Blank

                                                                              Parallel Key Stock, New JIS

                                                                              Parallel Keys - With Tapped Hole

                                                                              Parallel Keys - Stainless Steel

                                                                              Parallel Keys With Counterbores and Tapped Hole

                                                                              Key material (S45C)

                                                                              Parallel Keys Semi-Finished

                                                                              New JIS Parallel Machine Key【1-100 Pieces Per Package】

                                                                              SEIKI Machine Key, Standard Series (JIS B 1301)

                                                                              Parallel Keys - With Counterbores and Tapped Hole

                                                                              New JIS Parallel Key

                                                                              Tapered Machine Keys with Gib Head

                                                                              Both Ends Round【1-150 Pieces Per Package】

                                                                              Woodruff Key

                                                                              New JIS Single Round End Key【1-500 Pieces Per Package】

                                                                              Parallel Key Both Round Seiki Seisakusho

                                                                              Parallel Key Both Round Himeno Precision Works, Inc.

                                                                              Parallel Keys - With Tapped Counterbore Hole

                                                                              Old JIS Parallel Key

                                                                              Single-End Rounded Machine Key

                                                                              Square Machine Keys

                                                                              SEIKI Machine Key Series with Release Tap (JIS B 1301)

                                                                              Parallel key both round type (S45C)【5-10 Pieces Per Package】

                                                                              Parallel Key Stock, Former JIS

                                                                              Parallel Keys With Tapped Counterbored Hole

                                                                              Single Round Key, Made by SEIKI Manufacturing

                                                                              Parallel Key Seiki Seisakusho

                                                                              Both Ends Square【1-100 Pieces Per Package】

                                                                              SEIKI Machine Key, Key Material

                                                                              Old JIS Head Gradient Key

                                                                              New JIS Headed Gradient Key, by Himeno Seisakusho

                                                                              Standard Size Key【1-2 Pieces Per Package】

                                                                              CAD
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              • 2D / 3D
                                                                              Days to Ship Same day or more Same day or more Same day or more 3 Day(s) or more Same day Same day or more 8 Day(s) or more 5 Day(s) or more Same day or more 8 Day(s) or more 5 Day(s) or more Same day or more 5 Day(s) 8 Day(s) Same day or more 4 Day(s) or more Same day or more 5 Day(s) or more Same day or more 6 Day(s) or more 4 Day(s) or more 4 Day(s) or more Same day or more 7 Day(s) or more 7 Day(s) or more 5 Day(s) or more Same day or more 9 Day(s) or more 8 Day(s) or more 4 Day(s) or more 4 Day(s) or more 8 Day(s) or more 5 Day(s) 7 Day(s) or more 7 Day(s) or more 4 Day(s) or more Same day or more 7 Day(s) or more 7 Day(s) or more 13 Day(s) or more
                                                                              ShapeParallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Round at Both Ends)Parallel Keys (Round at Both Ends)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Straight)Parallel Keys (Straight)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Straight)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Straight)Parallel Keys (Straight)Parallel Keys (Straight)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Straight)Tapered Machine KeysParallel Keys (Round at Both Ends)Woodruff KeysParallel Keys (Round at One End)Parallel Keys (Round at Both Ends)Parallel Keys (Round at Both Ends)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Straight)Parallel Keys (Round at One End)Parallel Keys (Straight)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Round at Both Ends)Parallel Keys (Straight)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Round at One End)Parallel Keys (Straight)Parallel Keys (Straight)Parallel Keys (Straight)Tapered Machine KeysTapered Machine KeysParallel Keys (Straight)
                                                                              Width(mm)2 ~ 1282 ~ 322 ~ 2554 ~ 283 ~ 368 ~ 183 ~ 183 ~ 565 ~ 182 ~ 1483 ~ 365 ~ 123 ~ 252 ~ 148 ~ 182 ~ 564 ~ 384 ~ 143 ~ 103 ~ 284 ~ 203 ~ 58 ~ 184 ~ 503 ~ 323 ~ 365 ~ 123 ~ 128 ~ 50123 ~ 554 ~ 142 ~ 1415 ~ 20123 ~ 22
                                                                              Overall Length(mm)8 ~ 80205 ~ 3005 ~ 120208 ~ 1506 ~ 15015 ~ 110300-10 ~ 1203507030030010 ~ 1505 ~ 10035 ~ 11030034 ~ 3238 ~ 150-8 ~ 15012 ~ 1507 ~ 1515 ~ 1103006 ~ 1006 ~ 15010 ~ 1008 ~ 80-258 ~ 201410 ~ 80350110 ~ 15090300 ~ 350
                                                                              MaterialSteelSteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteel / Stainless SteelStainless SteelSteelSteelSteelSteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteelStainless SteelSteelSteelStainless SteelSteelSteelSteel / Stainless Steel
                                                                              Hole MachiningStraightCounterbored HoleStraightStraightCenter TappedStraightStraightCounterbored HoleStraightStraightCenter TappedStraightCounterbored + TappedStraightStraightStraightStraightCenter Tapped + CounterboredStraightStraightStraightStraightStraightStraightStraightCounterbored + TappedStraightStraightStraightCenter TappedStraightStraightCounterbored + TappedStraightStraightStraightStraightStraightStraightStraight

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