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Hot Dipper Galvanized Bolt Nut
**Hot Dip Galvanized Bolt Nut**
Widely used in electrical transmission facilities, construction, and industrial applications. Available with Dacromet or Ruspert coatings for enhanced corrosion resistance. These high-tensile bolts are ideal for heavy-duty use, offering superior strength and durability.
Available in DIN metric sizes (Grade 8.8, 10.9, 12.9) ranging from M12x25 up to M36x300. For inch sizes, SAE Grade 8 is available, with dimensions from 7/16x1 up to 1.5x5 inches. Our bolts are manufactured according to international standards such as SAE, ASTM, DIN, JIS, and more.
Transhow Fasteners specializes in manufacturing a wide range of bolts including hex bolts, round head bolts, square head bolts, T-head bolts, dog head bolts, and custom-designed fasteners. We produce both metric (DIN, EN, ISO, GB, JIS, AS, UNI) and inch standard bolts (ASME/ANSI, ASTM/SAE/IFI, BS).
Our materials include carbon steel, alloy steel, stainless steel, and brass. Bolts below M24 (or 1 inch) are typically cold forged, while larger sizes are hot forged for better structural integrity. Surface treatments such as black oxide, zinc plating, hot dip galvanizing, Dacromet, Ruspert, nickel, and chrome plating are available to meet different environmental and performance requirements.
**Structure Bolts & Heavy Hex Bolts**
These high-strength heavy hex bolts are specifically designed for steel-to-steel connections in buildings, highways, railways, and bridges. They are often paired with heavy hex nuts and made from medium carbon steel or alloy steel. The finished products are usually treated with black oxide or hot dip galvanizing for improved corrosion resistance.
Standard products include:
- DIN 6914: High-strength hexagon head bolts with large widths across flats
- DIN 7990: Steel hexagon head bolts for structural steel bolting
- ISO 7411 / ISO 7412: Hexagon bolts for high-strength structural bolting
- EN 14399: Hexagon head bolts for steel structures
- ASTM A193, A194, A307, A320, A325, A354, A490: Heavy hex bolts and structure bolts
- BS 1769: Heavy-style hexagon nuts
- BS 4395: High-strength bolts with large hexagon heads
Here is a detailed table of bolt specifications:
| Bolt Head | Hex | Round | Mushroom | T | Square | OVAL | CSK |
|-----------|-----|-------|----------|---|--------|------|-----|
| Material | Carbon Steel | Stainless Steel | Alloy Steel | Brass | Copper | Bronze | Aluminium |
| Grade/Metric | 4.8 | 6.8 | 8.8 | 10.9 | 12.9 | - | - |
| Grade/ANSI | A307-A | A307-B | A307-C | J429 Gr 2 | J429 Gr 5 | J429 Gr 8 | J429 Gr8.2 |
| Standards | DIN | ISO | GB | ANSI | JIS | BS | UNI |
| Threads | UNC | UNF | 2A | 3A | T threads | Left Thread | ISO |
| Steel Grade | C1035 | C1045 | C1020 | C1010 | Q235 | A3 | Q195 |
| Surface | Plain | Black | Zinc | YZP | Dacromet | Ruspert | Nickel |
Whether you need standard or customized fasteners, we provide high-quality solutions tailored to your specific needs. Contact us today for a detailed quote and further assistance.