| Size | M3-M48 or non-standard as request&design |
| Finish | Plain, black oxide , Zinc Electroplating,Hot Dip Galvanizing,Copper plating, Nickel plating,Zinc impregnation,ETC. |
| Material | Carbon steel、Stainless steel |
| Grade | 4，8，10，12 |
| Standard | GB, DIN, ISO, ANSI/ASTM, BS, JIS,ETC. |
| Non-standards | OEM is available, according to drawing or samples. |
| Samples | Samples are free. |
| Package | Wooden boxes, pallet, cartons, plastic bags, nylon bags. |
High strength heavy hex structure bolts are designed for steel-to-steel structural connections in varius buildings, highway and railway, bridge contructions. Structure bolts usually accompanied with heavy hex nuts. Material used for heavy hex bolts and nuts are generally middle carbon steel, alloy steel. Finished bolts and nuts are usually black oxide, hot dipper galvanized. Please find our below standard supplies:
DIN 6914 High-strength hexagon head bolts with large widths across flats for structural steel bolting
DIN 7990 Steel hexagon head bolts for structural steel bolting for supply with hexagon nuts
ISO 7411 ISO 7412 Hexagon bolts for high-strength structural bolting with large width across flats
EN 14399 Hexagon head bolts for steel structure
ASTM A193, A194, A307, A320, A325, A354, A490 heavy hex bolts and structure bolts.
BS 1769 Hexagon nuts Heavy style, BS 4395 High strength bolts with large hexagon head
