Illustrative drawing. Actual product is confirmed to your specification at quotation.
Industrial Fasteners
Keys
A key sits in a keyway in the shaft and hub to transmit torque between the two. Parallel keys are the most common; taper, gib-head and Woodruff keys are used where a tight or self-seating fit is needed. Key size follows shaft diameter.
- Parallel, taper and Woodruff
- Sizes by shaft diameter
- Rounded or square ends
Specifications
- Material
- C45 / EN8 steelStainless steel A2 / A4
- Grade / property class
- Key steel
- Thread
- Not threaded
- Finish / coating
- Bright / self-colourBlack oxideZinc plated
- Size range
- Up to M6M8–M12M14–M24M27–M48
- Standards
- DIN 6885 / ISO 773 (parallel)DIN 6886 / 6887 (taper)DIN 6888 (Woodruff)IS 2048
Exact dimensions, lengths and availability are confirmed at quotation.
Applications
- Gears, pulleys and sprockets
- Couplings and flywheels
- Motors and gearboxes
- Pumps and fans
- Machine tool spindles
Technical reference
Parallel key size by shaft diameter (DIN 6885 / ISO 773)
| Shaft diameter (mm) | Key b × h (mm) |
|---|---|
| 6 – 8 | 2 × 2 |
| 8 – 10 | 3 × 3 |
| 10 – 12 | 4 × 4 |
| 12 – 17 | 5 × 5 |
| 17 – 22 | 6 × 6 |
| 22 – 30 | 8 × 7 |
| 30 – 38 | 10 × 8 |
| 38 – 44 | 12 × 8 |
| 44 – 50 | 14 × 9 |
| 50 – 58 | 16 × 10 |
| 58 – 65 | 18 × 11 |
| 65 – 75 | 20 × 12 |
| 75 – 85 | 22 × 14 |
| 85 – 95 | 25 × 14 |
Key width b × height h in mm for each shaft diameter range. Confirm keyway depth against the standard for your application.
Related and complementary fasteners
Request a quote for Keys
Give us the size, grade, finish and quantity. We reply within one business day.
Common questions
- Which sizes and grades of keys do you supply?
- We supply keys in Up to M6, M8–M12, M14–M24, M27–M48 size bands and grades/classes including Key steel. Exact availability, dimensions and lead time are confirmed at quotation.
- Which standards do keys follow?
- Common standards are DIN 6885 / ISO 773 (parallel), DIN 6886 / 6887 (taper), DIN 6888 (Woodruff), IS 2048. Tell us the standard you need and we will quote to it.
- Can you supply in bulk or with test certificates?
- Yes. We quote for loose lots and scheduled bulk supply across India, and can share manufacturer test certificates where available. Confirm the requirement when you request a quote.
Need a quote on bulk or custom industrial supply?
Share your specifications and quantities — our technical team will respond with pricing and lead time within one business day.