Material |
AISI 1016 - 1022 or equivalent steel. |
Heat
Treatment |
Screws shall be quenched in liquid
and then tempered by reheating to
625°F minimum. |
Surface
Hardness |
Rockwell C 52 - 58 |
Case Depth |
#8 thru #12 diameters: .004 - .009 |
Core
Hardness |
Rockwell C 32 - 40 (after tempering) |