Square Headed Bolts Square head bolts offer minimum chance of wrench slippage while wrenching because of their square designed head. They are commonly used in industrial machinery, restorations of village houses to hang rustic decorations to the walls, including some furniture products, such as chairs or computer desks, and some other outdoor needs, such as in gardens, in a garage or in outdoor kitchens etc. A 307 Square Headed Bolts, nickel plated gr 8 Square Bolts, standard hex sizes for bolts can be used for many different applications such as Tower and Pole, Oil and Gas, Furniture and Decoration, Highway Guardrail, Mechanical Machine, High-Speed Rail and train, Solar Energy, Metal Building etc FYFasteners provides all the standard sizes in most ASTM, SAE and DIN specifications, including nonstandard dimensions. Standard ASME/ANSI, DIN, ISO, JIS, BS standard/non-standard sizes Material Carbon steel, stainless steel, alloy steel etc Grade CL4.8, 5.8, 6.8, 8.8, 10.9, 12.9, SAE J429 Gr.2, 5,8, ASTM A307Gr.A Finish Plain, black oxide, (clear/yellow/blue)zinc plated, H.D.G, nickel, chrome 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