... steel,Alloy steel 3.Custom made 4.ISO factory Small spring 1. Standard of Small spring : ISO,JIS,GB,ANSI,BSW,DIN or non ... 2. Material : Steel,Stainless steel,Alloy steel 3. Dimension of Small spring : M4-M484. OEM&Customize non-standard products welcome.5. Surface ... CAN CUSTOMIZE THE SCREW ACCORDING TO YOUR DRAWINGS----------------------------Various slot Small spring