Spring Steel Beam Clamps - Hammer On - 1/4"-20 x 3/8" Stud - 1/8" - 1/4" Flange Can be used to suspend boxes, fixtures and bridle rings to beam flanges 1/8” to 1/4”Spring Steel Beam Clamps - Hammer On - 1/4"-20 x 3/8" Stud 1/8" - 1/4" Flange features include: Can be used to suspend boxes, fixtures and bridle rings to beam flanges 1/8” to 1/4” Ultimate Static Load Limit: - 75 lbs. Beam clamp with 1/4”-20 x 3/8” staked stud used to suspend box from bottom of beam Order Qty of 1 = 1 Piece cULus Listed Below is more info on our Spring Steel Beam Clamps - Hammer On - 1/4-20 x 3/8" Stud 1/8" - 1/4" Flange