1/4"-20 x 1-3/4" Coarse Thread TorqueMaster Wedge Anchor BoltsType: Anchor Bolts
Drill Size: 1/4"
Thread Size: 20 (Coarse)
Type: Wedge Anchor
Box of 100.
All mechanical bolts have a wedge arrangement at the end. Tightening the bolt results in a wedge being driven up against a sleeve. This jams the end of the bolt, and provides the strength.