| Size | M3-M48 or non-standard as request&design |
| Finish | Plain, black oxide , Zinc Electroplating,Hot Dip Galvanizing,Copper plating, Nickel plating,Zinc impregnation,ETC. |
| Material | Carbon steel、Stainless steel |
| Grade | 4，8，10，12 |
| Standard | GB, DIN, ISO, ANSI/ASTM, BS, JIS,ETC. |
| Non-standards | OEM is available, according to drawing or samples. |
| Samples | Samples are free. |
| Package | Wooden boxes, pallet, cartons, plastic bags, nylon bags. |
DIN 7349 Plain Washers for Bolts with Heavy Clamping Sleeves
DIN7349 washer is a type of heavy structure use flat washers, with high strength and thicker bearing surface. Normally used in a high tensile bolt with spring pins (din1481). The regular material for din7349 heavy structure flat washer are spring steels, alloy steels, stainless steels, brass, bronze or copper alloys.
