Material:Stainless steel or Carbon steel
Standard:DIN,GB
Certificate:CE, ISO9001
Surface treatment:PLAIN, BLASTING, ZINC PLATED, HOT DIP GALVANISED, etc.
Hex-Head Woodscrews also known as Lag Bolts. These are used to support heavier loads than a standard woodscrew and require a pilot hole unlike some woodscrews, hex head woodscrews are more suitable than a standard woodscrew when a large amount of torque is required.