... bolts, hammer head bolts thread bolt, T-bolt, T head bolts, hammer head bolts 1. Standard of T head Bolts: DIN,ANSI,BS,AS ... ,etc.2. Material of T head Bolts: Carbon steel ... from Grade2 to Grade10.4. Size of T head Bolts: diameter from M6to M20 or 1/4" to 3/4". Length can ...