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Undersized Machine Key Assortments
Since they fit more loosely than standard keys, these undersized keys are best for uneven keyways or when you need to disassemble parts frequently, such as during maintenance or prototyping. Made of steel, all keys offer good strength.
Rounded keys fill oval keyways completely, reducing stress on the key and shaft. In closed keyways, these keys won’t slide along the shaft. Their rounded ends also make it easy to slide gears, hubs, and other components into place.
Zinc-plated keys resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Straight Key Assortments
Straight Key
| Number of Pieces | Straight Keys Included | Key Tolerance | Container Type | Each | |
1008-1045 Carbon Steel | |||||
|---|---|---|---|---|---|
| 58 | 4 mm × 4 mm × 25 mm Lg. (12 Pieces) 5 mm × 5 mm × 20 mm Lg. (12 Pieces) 5 mm × 5 mm × 25 mm Lg. (12 Pieces) 6 mm × 6 mm × 20 mm Lg. (8 Pieces) 7 mm × 8 mm × 20 mm Lg. (8 Pieces) 7 mm × 8 mm × 32 mm Lg. (6 Pieces) | -0.09mm to 0mm | Plastic Box | 0000000 | 000000 |
Zinc-Plated 1008-1045 Carbon Steel | |||||
| 58 | 1/8" × 1/8" × 3/4" Lg. (3 Pieces) 1/8" × 1/8" × 1" Lg. (3 Pieces) 3/16" × 3/16" × 3/4" Lg. (5 Pieces) 3/16" × 3/16" × 1" Lg. (5 Pieces) 3/16" × 3/16" × 1 1/4" Lg. (5 Pieces) 1/4" × 1/4" × 3/4" Lg. (5 Pieces) 1/4" × 1/4" × 1 1/4" Lg. (5 Pieces) 1/4" × 1/4" × 1 1/2" Lg. (5 Pieces) 5/16" × 5/16" × 1 1/4" Lg. (5 Pieces) 5/16" × 5/16" × 1 1/2" Lg. (5 Pieces) 3/8" × 3/8" × 1 1/4" Lg. (5 Pieces) 3/8" × 3/8" × 1 1/2" Lg. (5 Pieces) 1/2" × 1/2" × 1 1/2" Lg. (2 Pieces) | -0.003" to 0" | Plastic Box | 000000000 | 000000 |
Zinc-Plated Steel | |||||
| 300 | 1/8" × 1/8" × 3/4" Lg. (25 Pieces) 1/8" × 1/8" × 1" Lg. (25 Pieces) 3/16" × 3/16" × 3/4" Lg. (25 Pieces) 3/16" × 3/16" × 1" Lg. (25 Pieces) 3/16" × 3/16" × 1-1/4" Lg. (25 Pieces) 3/16" × 3/16" × 1-1/2" Lg. (25 Pieces) 1/4" × 1/4" × 3/4" Lg. (25 Pieces) 1/4" × 1/4" × 1-1/4" Lg. (25 Pieces) 1/4" × 1/4" × 1" Lg. (25 Pieces) 1/4" × 1/4" × 1-1/2" Lg. (25 Pieces) 5/16" × 5/16" × 1-1/4" Lg. (25 Pieces) 5/16" × 5/16" × 1-1/2" Lg. (25 Pieces) | -0.002" to 0" | Plastic Box | 000000000 | 000000 |
Rounded Key Assortments
Rounded Key
| Number of Pieces | Rounded Keys Included | Key Tolerance | Container Type | Each | |
1008-1045 Carbon Steel | |||||
|---|---|---|---|---|---|
| 25 | 1/8" × 1/8" × 3/4" Lg. (2 Pieces) 1/8" × 1/8" × 1" Lg. (3 Pieces) 3/16" × 3/16" × 3/4" Lg. (3 Pieces) 3/16" × 3/16" × 1" Lg. (3 Pieces) 3/16" × 3/16" × 1 1/2" Lg. (2 Pieces) 1/4" × 1/4" × 3/4" Lg. (2 Pieces) 1/4" × 1/4" × 1" Lg. (3 Pieces) 1/4" × 1/4" × 1 1/4" Lg. (2 Pieces) 1/4" × 1/4" × 1 1/2" Lg. (1 Piece) 5/16" × 5/16" × 1" Lg. (1 Piece) 5/16" × 5/16" × 1 1/2" Lg. (1 Piece) 3/8" × 3/8" × 1" Lg. (1 Piece) 3/8" × 3/8" × 1 1/2" Lg. (1 Piece) | -0.002" to 0" | __ | 0000000 | 000000 |
| 58 | 3/16" × 3/16" × 3/4" Lg. (9 Pieces) 3/16" × 3/16" × 1" Lg. (9 Pieces) 1/4" × 1/4" × 3/4" Lg. (8 Pieces) 1/4" × 1/4" × 1" Lg. (7 Pieces) 1/4" × 1/4" × 1 1/4" Lg. (7 Pieces) 1/4" × 1/4" × 1 1/2" Lg. (6 Pieces) 5/16" × 5/16" × 1" Lg. (3 Pieces) 5/16" × 5/16" × 1 1/2" Lg. (3 Pieces) 3/8" × 3/8" × 1" Lg. (3 Pieces) 3/8" × 3/8" × 1 1/2" Lg. (3 Pieces) | -0.002" to 0" | Plastic Box | 0000000 | 00000 |
Zinc-Plated Steel | |||||
| 25 | 4 mm × 4 mm × 80 mm Lg. (2 Pieces) 5 mm × 5 mm × 80 mm Lg. (3 Pieces) 6 mm × 6 mm × 80 mm Lg. (2 Pieces) 7 mm × 7 mm × 80 mm Lg. (2 Pieces) 8 mm × 7 mm × 80 mm Lg. (2 Pieces) 8 mm × 8 mm × 80 mm Lg. (3 Pieces) 10 mm × 8 mm × 80 mm Lg. (2 Pieces) 10 mm × 10 mm × 80 mm Lg. (2 Pieces) 12 mm × 8 mm × 80 mm Lg. (2 Pieces) 12 mm × 12 mm × 80 mm Lg. (2 Pieces) 16 mm × 10 mm × 80 mm Lg. (1 Piece) 18 mm × 11 mm × 80 mm Lg. (1 Piece) 20 mm × 12 mm × 80 mm Lg. (1 Piece) | -0.03mm to 0mm | Plastic Box | 000000000 | 000000 |
| 58 | 4 mm × 4 mm × 40 mm Lg. (8 Pieces) 5 mm × 5 mm × 40 mm Lg. (8 Pieces) 6 mm × 6 mm × 40 mm Lg. (10 Pieces) 8 mm × 7 mm × 40 mm Lg. (4 Pieces) 8 mm × 8 mm × 40 mm Lg. (10 Pieces) 10 mm × 8 mm × 40 mm Lg. (4 Pieces) 10 mm × 10 mm × 40 mm Lg. (4 Pieces) 12 mm × 12 mm × 40 mm Lg. (4 Pieces) 14 mm × 9 mm × 40 mm Lg. (4 Pieces) 16 mm × 10 mm × 40 mm Lg. (2 Pieces) | -0.03mm to 0mm | Plastic Box | 000000000 | 00000 |
Undersized Key Stock Assortments
Cut keys to custom lengths. This key stock is undersized, so keys will fit slightly more loosely than standard keys and are best for inconsistent keyways. Use undersized keys when parts need to be taken apart frequently, such as for maintenance or prototyping. Either zinc- or zinc yellow-chromate plated, this key stock resists corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
| Number of Pieces | Straight Keys Included | Key Tolerance | Container Type | Each | |
Zinc-Plated 1008-1045 Carbon Steel | |||||
|---|---|---|---|---|---|
| 31 | 1/8" × 1/8" × 12" Lg. (5 Pieces) 3/16" × 3/16" × 12" Lg. (5 Pieces) 1/4" × 1/4" × 12" Lg. (5 Pieces) 5/16" × 5/16" × 12" Lg. (5 Pieces) 3/8" × 3/8" × 12" Lg. (5 Pieces) 7/16" × 7/16" × 12" Lg. (3 Pieces) 1/2" × 1/2" × 12" Lg. (3 Pieces) | -0.002" to 0" | Cardboard Box | 0000000 | 000000 |
Zinc Yellow-Chromate Plated 1008-1045 Carbon Steel | |||||
| 31 | 4 mm × 4 mm × 305 mm Lg. (5 Pieces) 5 mm × 5 mm × 305 mm Lg. (5 Pieces) 6 mm × 6 mm × 305 mm Lg. (5 Pieces) 7 mm × 7 mm × 305 mm Lg. (5 Pieces) 8 mm × 8 mm × 305 mm Lg. (5 Pieces) 10 mm × 10 mm × 305 mm Lg. (3 Pieces) 12 mm × 12 mm × 305 mm Lg. (3 Pieces) | -0.043mm to 0mm | Cardboard Box | 0000000 | 00000 |