The ASTM A563 specification covers the chemical and mechanical requirements for carbon and alloy steel nuts used on bolts, studs, and externally threaded fasteners.
COATING: Black
TYPE: ASTM A563
ROCKWELL HARDNESS: 26-38 HRC
PROOF LOAD: Min. 1030 MPa
SIZES | |||
M16 | M16 | M27 | M33 |
M20 | M20 | M30 | M36 |
Carbon | Manganese | Phosphorous | Sulfur | Silicon | Boron |
0.58 max | 0.27 min | 0.048 max | 0.058 max |
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