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.

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Hole Machining
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    Parallel Keys - Length Selectable/Configurable

      Parallel Keys - Counterbored

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

          Parallel Keys - Tapped and Counterbored Holes

            Parallel Keys - Tapped Hole

              Parallel Keys - Tapped, Counterbored Hole

                New JIS Double Square End Key

                  Rounded Key

                    Tapered Machine Keys - Gib Head

                    • New Products
                    • Precision Cleaning
                    • Electrolytic Polishing + Precision Cleaning
                    • Degreasing

                    [Clean & Pack] Parallel Key

                      New JIS, Double-Rounded Key

                        Parallel Keys - Standard Length, Width Selectable

                          SEIKI Machine Key - Standard Series (JIS B 1301)

                            Dual Round Key

                              Square Machine Keys

                                Single-End Rounded Machine Key

                                  Parallel Keys - Stainless Steel

                                    Parallel Key Both Round Seiki Seisakusho

                                      Key Material (S45C)

                                        Loose Slot Tenons, DIN 6323

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

                                            New JIS, Parallel Key

                                              Former JIS Parallel Key

                                                Parallel Key Both Round Himeno Precision Works, Inc.

                                                  New JIS One-Side Round Key

                                                    Machine Key Set [Inch] EA968ZC-100

                                                      Parallel Key Stock, New JIS

                                                        Both Ends Square

                                                          Standard Size Key

                                                            Parallel Key Dual Round Type (S45C)

                                                              Single Round Key, Made by SEIKI Manufacturing

                                                                Parallel Key Seiki Seisakusho

                                                                  Double Square-ended Machine Key EA968ZD-12

                                                                    Double Square-ended Machine Key EA968ZD-14

                                                                      SEIKI Machine Key, Key Material

                                                                        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-13

                                                                                  Double Square-ended Machine Key EA968ZD-15

                                                                                    Double Square-ended Machine Key EA968ZD-16

                                                                                      Double Square-ended Machine Key EA968ZD-17

                                                                                        Double Square-ended Machine Key EA968ZD-18

                                                                                          Double Square-ended Machine Key EA968ZD-19

                                                                                          Brand

                                                                                          MISUMI

                                                                                          MISUMI

                                                                                          Seiki Works

                                                                                          MISUMI

                                                                                          MISUMI

                                                                                          MISUMI

                                                                                          Himeno Precision Works

                                                                                          Ohkita

                                                                                          MISUMI

                                                                                          MISUMI

                                                                                          Himeno Precision Works

                                                                                          MISUMI

                                                                                          Seiki Works

                                                                                          Nankai

                                                                                          Ohkita

                                                                                          Ohkita

                                                                                          MISUMI

                                                                                          Sunco

                                                                                          Trusco Nakayama

                                                                                          HALDER

                                                                                          Seiki Works

                                                                                          Himeno Precision Works

                                                                                          Himeno Precision Works

                                                                                          Sunco

                                                                                          Himeno Precision Works

                                                                                          ESCO

                                                                                          Ohkita

                                                                                          Nankai

                                                                                          Seiki Works

                                                                                          Trusco Nakayama

                                                                                          Sunco

                                                                                          Sunco

                                                                                          ESCO

                                                                                          ESCO

                                                                                          Seiki Works

                                                                                          ESCO

                                                                                          ESCO

                                                                                          ESCO

                                                                                          ESCO

                                                                                          ESCO

                                                                                          ESCO

                                                                                          ESCO

                                                                                          ESCO

                                                                                          ESCO

                                                                                          ESCO

                                                                                          Product Series

                                                                                          Parallel Keys - Length Selectable/Configurable

                                                                                          Parallel Keys - Counterbored

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

                                                                                          Parallel Keys - Tapped and Counterbored Holes

                                                                                          Parallel Keys - Tapped Hole

                                                                                          Parallel Keys - Tapped, Counterbored Hole

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

                                                                                          Rounded Key

                                                                                          Tapered Machine Keys - Gib Head

                                                                                          [Clean & Pack] Parallel Key

                                                                                          New JIS, Double-Rounded Key【1-100 Pieces Per Package】

                                                                                          Parallel Keys - Standard Length, Width Selectable

                                                                                          SEIKI Machine Key - Standard Series (JIS B 1301)

                                                                                          Dual Round Key【1-500 Pieces Per Package】

                                                                                          Square Machine Keys

                                                                                          Single-End Rounded Machine Key

                                                                                          Parallel Keys - Stainless Steel

                                                                                          Parallel Key Both Round Seiki Seisakusho

                                                                                          Key Material (S45C)

                                                                                          Loose Slot Tenons, DIN 6323

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

                                                                                          New JIS, Parallel Key

                                                                                          Former JIS Parallel Key

                                                                                          Parallel Key Both Round Himeno Precision Works, Inc.

                                                                                          New JIS One-Side Round Key【1-500 Pieces Per Package】

                                                                                          Machine Key Set [Inch] EA968ZC-100

                                                                                          Parallel Key Stock, New JIS

                                                                                          Both Ends Square【1-100 Pieces Per Package】

                                                                                          Standard Size Key【1-2 Pieces Per Package】

                                                                                          Parallel Key Dual Round Type (S45C)【5-10 Pieces Per Package】

                                                                                          Single Round Key, Made by SEIKI Manufacturing

                                                                                          Parallel Key Seiki Seisakusho

                                                                                          Double Square-ended Machine Key EA968ZD-12

                                                                                          Double Square-ended Machine Key EA968ZD-14

                                                                                          SEIKI Machine Key, Key Material

                                                                                          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-13

                                                                                          Double Square-ended Machine Key EA968ZD-15

                                                                                          Double Square-ended Machine Key EA968ZD-16

                                                                                          Double Square-ended Machine Key EA968ZD-17

                                                                                          Double Square-ended Machine Key EA968ZD-18

                                                                                          Double Square-ended Machine Key EA968ZD-19

                                                                                          CAD
                                                                                          • 2D / 3D
                                                                                          • 2D / 3D
                                                                                          • 2D / 3D
                                                                                          • 2D / 3D
                                                                                          • 2D / 3D
                                                                                          • 2D / 3D
                                                                                          • 2D / 3D
                                                                                          • 2D / 3D
                                                                                          • 3D
                                                                                          Days to Ship Same Day

                                                                                          Stock Items Included

                                                                                          5 Days Same Day

                                                                                          Stock Items Included

                                                                                          5 Days 5 Days 5 Days 4 Days 5 Days 5 Days 7 Days 4 Days Same Day

                                                                                          Stock Items Included

                                                                                          Same Day

                                                                                          Stock Items Included

                                                                                          4 Days 5 Days 5 Days Same Day

                                                                                          Stock Items Included

                                                                                          4 Days 4 Days 12 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days 5 Days 5 Days 9 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days 4 Days
                                                                                          Specifications
                                                                                          • Rapid Design
                                                                                          • Rapid Design
                                                                                            • Rapid Design
                                                                                            • Rapid Design
                                                                                            • Rapid Design
                                                                                                • Rapid Design
                                                                                                              • Rapid Design
                                                                                                                                                                      ShapeParallel (One Side Round) / Parallel (Both Sides Round)Parallel (One Side Round) / Parallel (Both Sides Round)Parallel (Straight) / Parallel (One Side Round) / Parallel (Both Sides Round)Parallel (One Side Round) / Parallel (Both Sides Round)Parallel (One Side Round) / Parallel (Both Sides Round)Parallel (One Side Round) / Parallel (Both Sides Round)Parallel (Straight)Parallel (Both Sides Round)Tapered KeyParallel (One Side Round) / Parallel (Both Sides Round)Parallel (Both Sides Round)-Parallel (Straight) / Parallel (One Side Round) / Parallel (Both Sides Round)Parallel (Both Sides Round)Parallel (Straight)Parallel (One Side Round)-Parallel (Both Sides Round)Parallel (Straight)Parallel (Straight)Parallel (Straight) / Parallel (One Side Round) / Parallel (Both Sides Round)Parallel (Straight)Parallel (Straight)Parallel (Both Sides Round)Parallel (One Side Round)-Parallel (Straight)Parallel (Straight)Parallel (Straight)Parallel (Both Sides Round)Parallel (One Side Round)Parallel (Straight)--Parallel (Straight)----------
                                                                                                                                                                      Hole MachiningStraightCounterbore HoleStraightCenter Tapped + Counterbore HoleCenter TappedCounterbore + Tapped HoleStraightStraightStraightStraightStraightStraightStraightStraightStraightStraightStraightStraightStraight-Center TappedStraightStraightStraightStraight-StraightStraightStraightStraightStraightStraight--Straight----------
                                                                                                                                                                      Width(mm)2 ~ 328 ~ 182 ~ 328 ~ 185 ~ 188 ~ 183 ~ 253 ~ 284 ~ 382 ~ 184 ~ 283 ~ 182 ~ 144 ~ 143 ~ 283 ~ 282 ~ 144 ~ 203 ~ 3612・10 ~ 20・365 ~ 122 ~ 564 ~ 503 ~ 53 ~ 28-3 ~ 564 ~ 14-3 ~ 123 ~ 55--2 ~ 14----------
                                                                                                                                                                      Overall Length(mm)6 ~ 110-5 ~ 250---10 ~ 1506 ~ 15034 ~ 3236 ~ 1108 ~ 1503005 ~ 1008 ~ 1506 ~ 1506 ~ 15035012 ~ 15030020 ~ 5010 ~ 1003003007 ~ 158 ~ 150--10 ~ 80300 ~ 3508 ~ 808 ~ 2014--350----------
                                                                                                                                                                      MaterialSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteelStainless SteelSteel / Stainless SteelSteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelStainless SteelSteel / Stainless SteelSteelSteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless SteelSteel / Stainless Steel-Steel / Stainless SteelSteelSteelSteelStainless SteelSteel--Stainless Steel----------

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