10# 1/4 5/16 3/8 COUNTERSUNK BOLT ALLEN KEY SOCKET SCREWS A2 304 STAINLESS STEEL
Thread dia. Pitch Thread pitch Head dia. Head thickness Drive tool. 304 Stainless Steel. 4# 2.845 40 0.635 6.45 5.55 1.4 1/16. 5/16 7.938 18 1.411 15.8 15.4 3.43 3/16. 1/4 6.35 20 1.27 13.48 12.2 2.82 5/32.