UNC GRADE 8 HIGH TENSILE STEEL SOCKET ALLEN COUNTERSUNK BOLTS 3/8" 1/2" 5/8 3/4"
Countersunk head. Thread - UNC (Imperial coarse). Grade 8 High tensile. Allen key drive. Zinc plated steel. 3/8 X 2 1/2". The following sizes are part threaded. all other sizes are fully threaded.