Product Name: Square Head Bolt Screw with Black Oxid Model NO.: Square Head Bolts Finish: Blk&Zinc Plated&HDG Application: Machinery, Chemical Industry, Environmental, Building Grade: 2&5&8&10 Standard: DIN, ANSI, GB, JIS, BSW, GOST Head Style: Square Connection: Common Bolt Type: Square Head Material: Carbon Steel Process: Cold Forging,Hot Forging,Machining Trademark: STRONG BOLT Transport Package: Small Box & Bulk & Customizing Specification: 1/2"-13X2" Origin: Ningbo, China HS Code: 7318150000 Product Description Item: ASME B 18.2.1 Square BoltsGrade: Grade 2, Grade5, Grade8, Grade10Material: Carbon steel, Alloy steel, Stainless steel and CopperSurface treatment:Plain, Black, Zinc Plated(ZP), Yellow Zinc Plated (YZP)and Hot DIP Galvanizing(H. D. G. ), Dacromet, Nickel Plated, Brass Plated.• Carton size : The ordinary carton (27*25*14.5CM) , or according to the demand of the customers.• Packing : plastic bags,Box, carton , then put on pallets, or according to the demand of the customers.• We are a typical China supplier with more than 10 years experiences on fasteners.We are professionally exporting under the standards of DIN, JIS, GB, ANSI, and BS, as well as nonstandard fasteners. Now we have gained close cooperation with clients from Canada, Dubai, Europe, India,Chile,Peru and Russia, and won good comments from users. We always fulfilling customers' expectations by following the principle of "Providing services whenever and wherever our customers need it" to establish a steady beneficial relationship and wining customers' hearts. If you need more information, please contact our sales department.