... THE SCREW ACCORDING TO YOUR DRAWINGS---------------------------- Left Hand Threaded Rod 1. Standard of Left Hand Threaded Rod : ISO,JIS,GB,ANSI ... ,BSW,DIN or non standard as customize. 2. Material :Carbon steel,Stainless ... steel304,316,Alloy steel,Plastic3. Dimension of Left Hand Threaded Rod : M3-M1004. ...