Square Head Bolts

Square Head Bolts Standard: ASME B 18.2.1;GB/T8 Size: 1/4”-1 1/2”; M6-M38 Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass Grade: SAE J429 Gr.2,5,8; A307 Gr.A; Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 Thread: M, UNC, UNF Finish: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G Packing: bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand Application: Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 Equipment: Caliper, Go&No