Hex head bolts, or hexagonal machine bolts, hex screws, are a common type of removable threaded fastener, consisting of an external hexagonal head and a threaded shank. They are used with pre-threaded holes or nuts. Hex bolts are available in full-thread and partial-thread types. The hexagonal head design allows tightening with wrenches or socket tools from multiple angles.
Specifications
| Forming | Hot forging, cold heading. |
| Diameter | M1.6 to M100 (metric), or 1/4 inch to 4 inches (imperial). |
| Length | 2mm to 1000mm (customized). |
| Thread Types | UNC thread, UNF thread, ISO thread, Metric coarse thread, metric fine thread, and imperial threads, full thread, half thread, reverse thread. |
| Material | Carbon Steel, stainless Steel, alloy Steel, copper Alloy, nickel-Chromium Alloy. |
| Strength | Grade 4.6, 4.8, 5.8, 8.8, 10.9, 12.9; A2-70, A2-80, A4-70, A4-80; ASTM A307, A354, A449:Gr.2-Gr.8. |
| Surface | Electroplated colored zinc, eco-friendly colored zinc, eco-friendly black zinc, eco-friendly blue-white zinc, electroplated matte tin, glossy tin, copper plating, zinc-nickel alloy, tin-zinc alloy, Dacromet coating, zinc-aluminum coating, etc. |
| Standard | ISO, DIN, ASME, PN, IFI, SAE, EN, JIS. |
| Pakaging | Plastic bags, plastic boxes, color boxes, medium boxes, large boxes, pallets. |
Hex Head Bolts Exporter
51Fasteners supplies full size hexagon bolts in accordance with ISO, DIN, BS, PN, ASME, JIS and other international standards.
- Strict standards.
- High quality raw materials.
- Full size.
- Fast delivery.
- Customizable.
Hex Head Bolts Manufacturing Process
- Coil: Raw material (carbon steel, alloy steel) for the manufacture of bolts, supplied in coils.
- Annealing: Eliminate internal stresses in wire processing and increase its forgeability.
- Acid washing: remove the oxide film on the surface of the wire, and surface lubrication to facilitate the drawing of wires.
- Drawing: Cold drawing of coiled wire to the required wire diameter .
- Beating (molding): The wire is cold forged (or hot forged) to achieve the shape and length (or thickness) of the semi-finished product.
- Rolling: Rolling or tapping the molded semi-finished product to achieve the desired thread.
- Heat treatment: Changing the mechanical properties of a screw.
- Plating: according to the requirements of the surface treatment, such as increasing the screw’s anti-rust, beautiful and so on.
- Packing: Plastic box, carton, pallet or customized packing.
Hex Screws Applications
Hex head bolts are widely used in machinery manufacturing, construction engineering, automotive industry, energy and power, bridges, docks, transportation, electronics, and home appliances.
Hex Bolts Standards
| ISO 4014 | ISO 4018 | ISO 7412 | DIN 960 | DIN 65339 | DIN 931 |
| ISO 4015 | ISO 8765 | DIN 601 | DIN 961 | DIN 933 | DIN 7968 |
| ISO 4016 | ISO 8676 | DIN 610 | DIN 609 | DIN 558 | DIN 7990 |
| ISO 4017 | ISO 7411 | DIN 6914 | DIN 65526 | DIN 7964 | DIN 43165 |
| ASME/ANSI B18.2.3.1M | JIS B 1180 | EN 24014 | DIN 7999 | EN 24017 | ASME/ANSI B18.2.3.3M |
| EN 3007 | ASME/ANSI B18.2.3.7M | ASME/ANSI B18.2.1 | ASME/ANSI B18.2.6 | ASME/ANSI B18.2.3.5M |
Types of Hex Head Bolts
Galvanized Hex Bolt with Washers
Full Thread Hex Bolt
Partial Thread Hex Bolt
Brass Hex Bolt
Hex Bolt with Split Pin Hole on Shank
Hex Bolt with Wire Hole on Head
Titanium Hexagon Bolt
