Hex Head Lag Screw This RFQ was sourced on www.MFG.com in USA for Hex Lag Screws Buyer is in search of Hex Head Lag Screw. Approximately .75" O.D. x 4" long. Material is steel. Buyer Information Industry Construction City/Region Des Moines, Iowa Country USA RFQ RFQ Number 507298 Material Technical Specifications Category Hex Lag Screws Dimensions The following suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) provide manufacturing services and are members of the MFG.com community. For more information visit http://www.mfg.com. MFG.com performs a 5-point inspection on all engineered parts and RFQs to ensure quality and enhance your quoting experience Hex Lag Screws: A hex lag screw is a heavy woodscrew with a hexagonal head that is driven in with a wrench.