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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

  • On Sale Till 31/03/2024

Parallel Keys

    Parallel Keys - With Counterbore

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

      • On Sale Till 31/03/2024

      New JIS Parallel Key

        Parallel Keys - With Tapped Hole

          Key material (S45C)

          • On Sale Till 31/03/2024

          New JIS Double Round End Key

            Parallel Keys - Blank

              Parallel Keys Semi-Finished

                Rounded Key

                  SEIKI Machine Key, Standard Series (JIS B 1301)

                    Parallel Keys With Tapped Hole

                      Square Machine Keys

                        Parallel Keys - Stainless Steel

                          New JIS Parallel Machine Key

                          • On Sale Till 31/03/2024

                          Old JIS Parallel Key

                            Parallel Key Stock, New JIS

                              Parallel Keys  With Counterbores and Tapped Hole

                                Tapered Machine Keys with Gib Head

                                  Parallel Keys - With Counterbores and Tapped Hole

                                    Parallel Key Both Round Himeno Precision Works, Inc.

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

                                        Parallel Keys With Tapped Counterbored Hole

                                        • On Sale Till 31/03/2024

                                        New JIS Single Round End Key

                                          Parallel Keys - With Tapped Counterbore Hole

                                            Both Ends Round

                                              Parallel key both round type (S45C)

                                                Standard Size Key

                                                  Parallel Key Stock, Former JIS

                                                    Parallel Key Both Round Seiki Seisakusho

                                                      Woodruff Key

                                                        Both Ends Square

                                                          SEIKI Machine Key, Key Material

                                                            Single Round Key, Made by SEIKI Manufacturing

                                                              Parallel Key Seiki Seisakusho

                                                                Old JIS Head Gradient Key

                                                                  New JIS Headed Gradient Key, by Himeno Seisakusho

                                                                    Single-End Rounded Machine Key

                                                                    Brand

                                                                    MISUMI

                                                                    MiSUMi Economy80

                                                                    MISUMI

                                                                    MiSUMi Economy80

                                                                    MISUMI

                                                                    MISUMI

                                                                    SEIKI

                                                                    HIMENO PRECISION

                                                                    MISUMI

                                                                    TRUSCO NAKAYAMA

                                                                    HIMENO PRECISION

                                                                    MISUMI

                                                                    MISUMI

                                                                    MiSUMi Economy69

                                                                    OHKITA

                                                                    SEIKI

                                                                    MISUMI

                                                                    MiSUMi Economy73

                                                                    OHKITA

                                                                    MISUMI

                                                                    HIMENO PRECISION

                                                                    HIMENO PRECISION

                                                                    OHKITA

                                                                    MISUMI

                                                                    MiSUMi Economy76

                                                                    MISUMI

                                                                    MISUMI

                                                                    SUNCO

                                                                    SEIKI

                                                                    MISUMI

                                                                    MiSUMi Economy80

                                                                    HIMENO PRECISION

                                                                    MISUMI

                                                                    NANKAI INDUSTRY

                                                                    TRUSCO NAKAYAMA

                                                                    SEIKI

                                                                    OHKITA

                                                                    SUNCO

                                                                    OHKITA

                                                                    NANKAI INDUSTRY

                                                                    SEIKI

                                                                    SUNCO

                                                                    SUNCO

                                                                    SUNCO

                                                                    SUNCO

                                                                    OHKITA

                                                                    Product Series

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

                                                                    Parallel Keys With Center Counterbored Hole

                                                                    Parallel Keys

                                                                    Parallel Keys - With Counterbore

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

                                                                    New JIS Parallel Key

                                                                    Parallel Keys - With Tapped Hole

                                                                    Key material (S45C)

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

                                                                    Parallel Keys - Blank

                                                                    Parallel Keys Semi-Finished

                                                                    Rounded Key

                                                                    SEIKI Machine Key, Standard Series (JIS B 1301)

                                                                    Parallel Keys With Tapped Hole

                                                                    Square Machine Keys

                                                                    Parallel Keys - Stainless Steel

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

                                                                    Old JIS Parallel Key

                                                                    Parallel Key Stock, New JIS

                                                                    Parallel Keys With Counterbores and Tapped Hole

                                                                    Tapered Machine Keys with Gib Head

                                                                    Parallel Keys - With Counterbores and Tapped Hole

                                                                    Parallel Key Both Round Himeno Precision Works, Inc.

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

                                                                    Parallel Keys With Tapped Counterbored Hole

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

                                                                    Parallel Keys - With Tapped Counterbore Hole

                                                                    Both Ends Round【1-150 Pieces Per Package】

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

                                                                    Standard Size Key【1-2 Pieces Per Package】

                                                                    Parallel Key Stock, Former JIS

                                                                    Parallel Key Both Round Seiki Seisakusho

                                                                    Woodruff Key

                                                                    Both Ends Square【1-100 Pieces Per Package】

                                                                    SEIKI Machine Key, Key Material

                                                                    Single Round Key, Made by SEIKI Manufacturing

                                                                    Parallel Key Seiki Seisakusho

                                                                    Old JIS Head Gradient Key

                                                                    New JIS Headed Gradient Key, by Himeno Seisakusho

                                                                    Single-End Rounded Machine Key

                                                                    CAD
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                                                                    • 2D / 3D
                                                                    • 2D / 3D
                                                                    • 2D / 3D
                                                                    Days to Ship Same day or more Same day or more Same day or more 5 Day(s) or more 3 Day(s) or more Same day or more 5 Day(s) or more 4 Day(s) or more Same day or more Same day or more Same day or more 8 Day(s) or more Same day or more Same day 8 Day(s) or more Same day or more 4 Day(s) or more Same day or more 8 Day(s) or more 5 Day(s) 6 Day(s) or more 5 Day(s) or more 7 Day(s) or more 4 Day(s) or more 5 Day(s) Same day or more 5 Day(s) or more 4 Day(s) or more 4 Day(s) or more 13 Day(s) or more 8 Day(s) or more 7 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 7 Day(s) or more 7 Day(s) or more 9 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 (Straight)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Parallel Keys (Straight)Parallel Keys (Round at Both Ends)Parallel Keys (Straight)Parallel Keys (Straight)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 (Straight)Parallel Keys (Straight)Parallel Keys (Straight)Parallel Keys (Straight)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Tapered Machine KeysParallel 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 (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 One End)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 (Straight)Parallel Keys (Round at Both Ends)Woodruff KeysParallel Keys (Straight)Parallel Keys (Straight)Parallel Keys (Round at One End)Parallel Keys (Straight)Tapered Machine KeysTapered Machine KeysParallel Keys (Round at One End)
                                                                    Width(mm)3 ~ 882 ~ 328 ~ 182 ~ 252 ~ 565 ~ 183 ~ 364 ~ 283 ~ 185 ~ 123 ~ 362 ~ 1453 ~ 362 ~ 143 ~ 254 ~ 503 ~ 5684 ~ 388 ~ 183 ~ 55 ~ 12123 ~ 288 ~ 184 ~ 143 ~ 123 ~ 228 ~ 504 ~ 203 ~ 104 ~ 142 ~ 143 ~ 5515 ~ 20123 ~ 32
                                                                    Overall Length(mm)10 ~ 40205 ~ 30015 ~ 1105 ~ 12030010 ~ 1203008 ~ 1503003006 ~ 1505 ~ 100206 ~ 15035010 ~ 150300-7034 ~ 32335 ~ 1107 ~ 1510 ~ 100258 ~ 15015 ~ 1108 ~ 1508 ~ 80300 ~ 350-12 ~ 150-10 ~ 803508 ~ 2014110 ~ 150906 ~ 100
                                                                    MaterialSteelSteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteelSteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelStainless SteelSteelSteel / Stainless SteelSteel / Stainless SteelSteelSteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteelSteelStainless SteelStainless SteelSteelSteelSteelSteel / Stainless Steel
                                                                    Hole MachiningStraightCounterbored HoleStraightCounterbored HoleStraightStraightCenter TappedStraightStraightStraightStraightStraightStraightCenter TappedStraightStraightStraightStraightStraightCounterbored + TappedStraightCenter Tapped + CounterboredStraightCenter TappedCounterbored + TappedStraightCounterbored + TappedStraightStraightStraightStraightStraightStraightStraightStraightStraightStraightStraightStraightStraight

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