Square Washers Square Washers help develop more friction and prevent rotation, are often specified for seismic applications and timber construction, as well as in construction, machinery, and automotive applications etc FYFasteners provides all the standard sizes in most ASTM, SAE and DIN specifications, including nonstandard dimensions. Size ASME/ANSI, DIN, ISO, JIS, BS standard/non-standard sizes Material Low Carbon Steel, #45+heat treatment, spring steel, stainless steel, brass etc Finish Plain, black oxide, (clear/yellow/blue)zinc plated, H.D.G etc Package Bulk in cartons+ wood solid pallet or custom packing Delivery time Flexible upon order qty, normally within 30-40 days Payment T/T, L/C, Western Union etc Trade term FOB, CIF, CFR, EXW, DDP, DDU etc Our alloy steel Square Washers has black oxide, blue zinc plated, H.D.G, nickel, chrome materials for you. If you need, please no hesitate to contact us.