Lag Bolt for fastening into Concrete 1/2 nominal thread by 3 3/4 long. Standard size 1/2 fastener that is supplied as original equipment on most equipment orders. Used on: Various Equipment Lag Bolt for fastening into Concrete 1/2 nominal thread by 7 long. This fastener is primarily used in Top Trak Conveyor and Tracking Plate Applications where a longer reach bolt is required. Used on: Various Equipment Lag Bolt for fastening into Concrete 5/8 nominal thread by 6 long. Used on: Various Equipment #6 x 1/4 U-Drive Stainless Steel Screw. Used to mount B caps on aluminum framework. Used on: Various Equipment