IRSM 41 Fasteners Specification
IRSM 41 Fasteners Properties
| Chemical Properties | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Cr | Ni | Mo | V | Cu | Nb |
| 0.1 Max | 0.25-0.45 | 0.075-0.14 | 0.03 | 0.28-0.72 | 0.35-0.6 | 0.2-0.47 | 0.05 | 0.05 | 0.3-0.6 | 0.04 |
| Mechanical Properties | ||||
|---|---|---|---|---|
| Yeild strength | Tensile strength | Elongation | Reduction | Hardness |
| Mpa | Mpa | % | % | BHN |
| min | min | min | min | |
| 340 | 480 | 22 | -- | -- |
| Washer Dimensions | ||||||||
|---|---|---|---|---|---|---|---|---|
| Nominal Washer Size | M16 | M20 | M22 | M24 | M27 | M30 | M36 | |
| d1 | max | 18.3999 | 22.5 | 24.5 | 26.5 | 30.5 | 33.6 | 39.6 |
| min | 18 | 22 | 24 | 26 | 30 | 33 | 39 | |
| d2 | max | 34 | 42 | 44 | 50 | 56 | 60 | 72 |
| min | 32.4 | 40.4 | 42.4 | 48.4 | 54.1 | 58.1 | 71 | |
| h | max | 4.59996 | 4.59996 | 4.59996 | 4.59996 | 4.59996 | 4.59996 | 4.59996 |
| min | 3.1 | 3.1 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | |