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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

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

      Parallel Keys - Blank

        Parallel Keys - With Counterbore

          Parallel Keys - With Tapped Hole

            Parallel Keys - Stainless Steel

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

                Parallel Keys - With Counterbores and Tapped Hole

                  Parallel Keys With Tapped Hole

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

                      Key material (S45C)

                        New JIS Single Round End Key

                          Square Machine Keys

                            Parallel Keys Semi-Finished

                              SEIKI Machine Key, Standard Series (JIS B 1301)

                                Woodruff Key

                                  Parallel Keys With Tapped Counterbored Hole

                                    New JIS Double Round End Key

                                      New JIS Parallel Key

                                        Old JIS Parallel Key

                                          Rounded Key

                                            Parallel Keys  With Counterbores and Tapped Hole

                                              Both Ends Round

                                                Parallel key both round type (S45C)

                                                  Machine Key Set [Inch] EA968ZC-100

                                                    Parallel Keys - With Tapped Counterbore Hole

                                                      Tapered Machine Keys with Gib Head

                                                        Both Ends Square

                                                          New JIS Parallel Machine Key

                                                            SEIKI Machine Key, Key Material

                                                              Single Round Key, Made by SEIKI Manufacturing

                                                                Parallel Key Seiki Seisakusho

                                                                  Parallel Key Both Round Seiki Seisakusho

                                                                    Parallel Key Both Round Himeno Precision Works, Inc.

                                                                      Machine Key Set EA968ZC-130

                                                                        Double Square-ended Machine Key EA968ZD-1

                                                                          Double Square-ended Machine Key EA968ZD-10

                                                                            Double Square-ended Machine Key EA968ZD-11

                                                                              Double Square-ended Machine Key EA968ZD-12

                                                                                Double Square-ended Machine Key EA968ZD-13

                                                                                  Double Square-ended Machine Key EA968ZD-14

                                                                                    Double Square-ended Machine Key EA968ZD-15

                                                                                      Double Square-ended Machine Key EA968ZD-16

                                                                                        Double Square-ended Machine Key EA968ZD-17

                                                                                        Brand

                                                                                        MISUMI

                                                                                        MiSUMi Economy

                                                                                        MISUMI

                                                                                        MiSUMi Economy

                                                                                        MISUMI

                                                                                        MISUMI

                                                                                        MISUMI

                                                                                        MISUMI

                                                                                        MISUMI

                                                                                        SEIKI

                                                                                        MISUMI

                                                                                        MISUMI

                                                                                        MiSUMi Economy

                                                                                        SEIKI

                                                                                        TRUSCO NAKAYAMA

                                                                                        HIMENO PRECISION

                                                                                        OHKITA

                                                                                        MISUMI

                                                                                        MiSUMi Economy

                                                                                        SEIKI

                                                                                        OHKITA

                                                                                        MISUMI

                                                                                        MiSUMi Economy

                                                                                        HIMENO PRECISION

                                                                                        HIMENO PRECISION

                                                                                        HIMENO PRECISION

                                                                                        OHKITA

                                                                                        MISUMI

                                                                                        MiSUMi Economy

                                                                                        NANKAI INDUSTRY

                                                                                        TRUSCO NAKAYAMA

                                                                                        ESCO

                                                                                        MISUMI

                                                                                        MISUMI

                                                                                        NANKAI INDUSTRY

                                                                                        HIMENO PRECISION

                                                                                        SEIKI

                                                                                        SUNCO

                                                                                        SUNCO

                                                                                        SUNCO

                                                                                        SUNCO

                                                                                        ESCO

                                                                                        ESCO

                                                                                        ESCO

                                                                                        ESCO

                                                                                        ESCO

                                                                                        ESCO

                                                                                        ESCO

                                                                                        ESCO

                                                                                        ESCO

                                                                                        ESCO

                                                                                        Product Series

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

                                                                                        Parallel Keys With Center Counterbored Hole

                                                                                        Parallel Keys

                                                                                        Parallel Keys - Blank

                                                                                        Parallel Keys - With Counterbore

                                                                                        Parallel Keys - With Tapped Hole

                                                                                        Parallel Keys - Stainless Steel

                                                                                        SEIKI Machine Key, Free Length Series (JIS B 1301)【1-5 Pieces Per Package】

                                                                                        Parallel Keys - With Counterbores and Tapped Hole

                                                                                        Parallel Keys With Tapped Hole

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

                                                                                        Key material (S45C)

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

                                                                                        Square Machine Keys

                                                                                        Parallel Keys Semi-Finished

                                                                                        SEIKI Machine Key, Standard Series (JIS B 1301)

                                                                                        Woodruff Key

                                                                                        Parallel Keys With Tapped Counterbored Hole

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

                                                                                        New JIS Parallel Key

                                                                                        Old JIS Parallel Key

                                                                                        Rounded Key

                                                                                        Parallel Keys With Counterbores and Tapped Hole

                                                                                        Both Ends Round【1-500 Pieces Per Package】

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

                                                                                        Machine Key Set [Inch] EA968ZC-100

                                                                                        Parallel Keys - With Tapped Counterbore Hole

                                                                                        Tapered Machine Keys with Gib Head

                                                                                        Both Ends Square【1-100 Pieces Per Package】

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

                                                                                        SEIKI Machine Key, Key Material

                                                                                        Single Round Key, Made by SEIKI Manufacturing

                                                                                        Parallel Key Seiki Seisakusho

                                                                                        Parallel Key Both Round Seiki Seisakusho

                                                                                        Parallel Key Both Round Himeno Precision Works, Inc.

                                                                                        Machine Key Set EA968ZC-130

                                                                                        Double Square-ended Machine Key EA968ZD-1

                                                                                        Double Square-ended Machine Key EA968ZD-10

                                                                                        Double Square-ended Machine Key EA968ZD-11

                                                                                        Double Square-ended Machine Key EA968ZD-12

                                                                                        Double Square-ended Machine Key EA968ZD-13

                                                                                        Double Square-ended Machine Key EA968ZD-14

                                                                                        Double Square-ended Machine Key EA968ZD-15

                                                                                        Double Square-ended Machine Key EA968ZD-16

                                                                                        Double Square-ended Machine Key EA968ZD-17

                                                                                        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 1 Day(s) or more 5 Day(s) 1 Day(s) or more 1 Day(s) or more 4 Day(s) or more 4 Day(s) or more 1 Day(s) or more 3 Day(s) or more 4 Day(s) or more 5 Day(s) 4 Day(s) or more 5 Day(s) or more 2 Day(s) or more 10 Day(s) or more 5 Day(s) or more 1 Day(s) or more 5 Day(s) or more 5 Day(s) 2 Day(s) or more 2 Day(s) or more 2 Day(s) or more 10 Day(s) or more 5 Day(s) 5 Day(s) or more 5 Day(s) or more 9 Day(s) or more 4 Day(s) or more 4 Day(s) or more 6 Day(s) or more 5 Day(s) or more 1 Day(s) or more 9 Day(s) or more 9 Day(s) or more 9 Day(s) or more 9 Day(s) or more 5 Day(s) or more 9 Day(s) or more 9 Day(s) or more 9 Day(s) or more 9 Day(s) or more 9 Day(s) or more 9 Day(s) or more 9 Day(s) or more 9 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 (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 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 (Straight)Parallel Keys (Straight)Parallel Keys (Straight) / Parallel Keys (Round at One End) / Parallel Keys (Round at Both Ends)Woodruff 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 (Straight)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)Tapered Machine KeysParallel Keys (Straight)Parallel Keys (Straight)Parallel Keys (Straight)Parallel Keys (Round at One End)Parallel Keys (Straight)Parallel Keys (Round at Both Ends)Parallel Keys (Round at Both Ends)----------
                                                                                        Width(mm)3 ~ 882 ~ 323 ~ 188 ~ 185 ~ 182 ~ 142 ~ 368 ~ 1855 ~ 123 ~ 363 ~ 323 ~ 365 ~ 122 ~ 143 ~ 10124 ~ 322 ~ 564 ~ 503 ~ 3684 ~ 143 ~ 12-8 ~ 184 ~ 384 ~ 143 ~ 282 ~ 143 ~ 554 ~ 203 ~ 5----------
                                                                                        Overall Length(mm)10 ~ 40205 ~ 30030015 ~ 11010 ~ 1203505 ~ 25035 ~ 1102010 ~ 1003008 ~ 1806 ~ 1503005 ~ 100-258 ~ 1803003006 ~ 150708 ~ 1508 ~ 80-15 ~ 11034 ~ 32310 ~ 8010 ~ 1653508 ~ 201412 ~ 1507 ~ 15----------
                                                                                        MaterialSteelSteelSteel / Stainless SteelSteelSteel / Stainless SteelSteel / Stainless SteelStainless SteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteelSteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteel-Steel / Stainless SteelSteelSteelSteelStainless SteelStainless SteelSteelSteel / Stainless SteelSteel / Stainless Steel----------
                                                                                        Hole MachiningStraightCounterbored HoleStraightStraightCounterbored HoleCenter TappedStraightStraightCenter Tapped + CounterboredCenter TappedCenter TappedStraightStraightStraightStraightStraightStraightCounterbored + TappedStraightStraightStraightStraightCounterbored + TappedStraightStraight-Counterbored + TappedStraightStraightStraightStraightStraightStraightStraightStraight----------

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