Name: square flat washers HS code: 7318210001 Model: ANSI/ASME Package: bulk packing; palletized; as required Trademark: HE, as required Origin: China Raw material: carbon steel Q235 Finish:zinc HDG black plain geomet.... ODM&OEM service: yes Sample: available Payment term: T/Twith deposit balance against B/L Certificate: ISO Delivery time: 20-40 days MOQ: 500kgs Export term: FOB; CIF ... Production capacity pcs/day: 800ton/month Minimum tensile strength lbs.: 7000 Hole dia. in: 9/16, 11/16, 13/16, 15/16, 7/8, 1,etc. For bolt dia. in: 1/2, 5/8, 3/4, 7/8, 1,etc.