Model NO.：EN 14399 / EN 15048

Model NO.：DIN 7991 / ISO 10642 / ASME B18.3 / JIS B1176 / GB/T 70.3

Model NO.：ASTM F436 | 1/2"–1-1/2" / M12-M64 | Carbon Steel Heat-Treated Plain / HDG

Model NO.：A563 Grade A / B / C / DH/Carbon Steel / SS304 / SS316 / Plain / HDG / Zinc Plated

Model NO.：ASTM A325 Type 1 | 1/2"-1-1/2" UNC | Carbon Steel HDG

Model NO.：DIN127 / DIN127B M3-M48 | Carbon Steel / 316 Stainless Steel

Model NO.：GB3632 M16-M30 | 10.9S Grade | Carbon Steel Plain / HDG

Model NO.：ASTM A490 / F3125 Gr.A490 | 1/2"-1-1/2" / M12-M36 / Weathering | Heavy Hex Head