5/16-9X2 1/2 A/F.428-.437 Head Hgt .300-.312 Unslotted Indent Hex Washer Lag Screw Full Thread Zinc (Pack Qty 600) BC-314007LHWH

Designed specifically for attaching track brackets and flag brackets of garage door assemblies to wooden door jambs AISI 1018 or equivalent steel Full thread lags are typically supplied in zinc finish