Place of origin: Ningbo, China Model Number: Din 931 Brand Name: Ningbo-bolt Standard: ISO Finish: Plain/Zinc/Black Oxide Material: Stainless steel/Carbon steel/Alloy steel Grade: 4.8, 6.8, 8.8, 10.9, 12.9 Package: Cartons/Plastic bags + Pallet Port: Shanghai/Ningbo Payment term: T/T Supply Ability: 100,000 Piece/Pieces per Month