| Place of Origin |
Jiangsu China (Mainland) |
| Brand Name |
JS |
Product Name: square head bolts Product Standard: AREA or ASTM, BS,RS, SS and UIC. Specification: Diameter: M20,M22,M24,M27,M30 or 3/8 to 1-1/8; length from 200mm to 600mm, or 1-1/2 to 26. Grade: 4.6,4.8,5.6,8.8,10.9, or Grade 2, Grade 5 or Grade 8. Protection: Black, Zinc Plated, Hot dip galvanized. produce bolts Square head track bolt ,railway bolt, steel structue bolt with nut , hex cap bolt auto bolt T-bolts etc..