ASME B18.8.6M Cotter Pins
ASME B18.8.6M Dimensions of Cotter Pins
| Nominal Size or Basic Diameter | Total Shank Diameter "A" [Note (1)] | Wire Width "B" | Head Diameter "C" | Extended Prong Length "D" | Gage Hole Diameter ± 0.03 | ||
|---|---|---|---|---|---|---|---|
| Max | Min | Max | Min | Min | Min | ||
| 0.6 | 0.5 | 0.4 | 0.5 | 0.4 | 0.9 | 0.8 | 0.60 |
| 0.8 | 0.7 | 0.6 | 0.7 | 0.6 | 1.2 | 0.8 | 0.80 |
| 1.0 | 0.9 | 0.8 | 0.9 | 0.7 | 1.6 | 0.8 | 1.00 |
| 1.2 | 1.0 | 0.9 | 1.0 | 0.8 | 1.7 | 1.2 | 1.20 |
| 1.6 | 1.4 | 1.3 | 1.4 | 1.1 | 2.4 | 1.2 | 1.60 |
| 2.0 | 1.8 | 1.7 | 1.8 | 1.4 | 3.2 | 1.2 | 2.00 |
| 2.5 | 2.3 | 2.1 | 2.3 | 1.7 | 4.0 | 1.2 | 2.50 |
| 3.2 | 2.9 | 2.7 | 2.9 | 2.2 | 5.1 | 1.6 | 3.20 |
| 4.0 | 3.7 | 3.5 | 3.7 | 2.8 | 6.5 | 2.0 | 4.00 |
| 5.0 | 4.6 | 4.4 | 4.6 | 3.5 | 8.0 | 2.0 | 5.00 |
| 6.3 | 5.9 | 5.7 | 5.9 | 4.6 | 10.3 | 2.0 | 6.30 |
| 8.0 | 7.5 | 7.3 | 7.5 | 5.9 | 13.1 | 2.0 | 8.00 |
| 10.0 | 9.5 | 9.3 | 9.5 | 6.7 | 16.6 | 3.2 | 10.00 |
| 13.0 | 12.4 | 12.1 | 12.4 | 9.4 | 21.7 | 3.2 | 13.00 |
| 16.00 | 15.4 | 15.1 | 15.4 | 12.0 | 27.0 | 3.2 | 16.00 |
| 20.0 | 19.3 | 19.0 | 19.3 | 14.5 | 33.8 | 3.2 | 20.00 |
Note:
(1) Total shank diameter, "A" dimension, is two times wire thickness. For additional requirements, refer
to General Data For Cotter Pins on page J-23.
Preferred Lengths
| Nominal Pin Size | 1.0 | 1.2 | 1.6 | 2.0 | 2.5 | 3.2 | 4.0 | 5.0 | 6.3 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Length | 8 | x | x | |||||||
| 12 | x | x | x | x | ||||||
| 16 | x | x | x | x | x | |||||
| 22 | x | x | x | x | x | x | x | |||
| 28 | x | x | x | x | x | x | x | |||
| 36 | x | x | x | x | x | x | ||||
| 45 | x | x | x | x | x | |||||
| 56 | x | x | x | x | ||||||
| 63 | x | x | x | |||||||
| 80 | x | x | x | |||||||
Pin, Cotter, 1.6 mm x 25 mm, Extended Prong Type, Steel, Zinc Plated.
Pin, Cotter, 4 mm x 32 mm. Hammer Lock Type, Corrosion Resistant Stee;.