Industrial Bolts – Custom U-Bolts, J-Bolts, L-Bolts & More
Overview
We specialize in manufacturing custom industrial bolts, including U-Bolts, J-Bolts, L-Bolts, Square U-Bolts, Slant U-Bolts, and Roof Top V-Bolts. Every bolt is designed and fabricated according to client specifications in terms of size, material, coating, and thread type. Our bolts are widely used in construction, automotive, marine, and industrial applications.
Types of U Bolts We Manufacture
1. U-Bolts
Best for: Pipe support, automotive, and structural applications.
Available in round, square, and semi-round designs.
Custom Specifications: Diameter, length, thread size per requirement.
Materials: Stainless steel, galvanized steel, carbon steel.
Finishes: Hot-dip galvanized, zinc-coated, SS 304, SS 316.
Standards: DIN 3570, ASTM F1554, ISO 898-1.
2. J-Bolts
Best for: Foundation anchoring and heavy-duty fastening.
Customizable bend angles, length, and threading.
Materials: Zinc-plated steel, hot-dip galvanized steel.
Finishes: SS 304, SS 316, epoxy-coated.
Standards: ASTM A307, DIN 529.
3. Square U-Bolts
Best for: Securing square or rectangular structures.
Tailored to specific pipe diameters and frame sizes.
Materials: Stainless steel, carbon steel, powder-coated options.
Finishes: Hot-dip galvanized, zinc-plated, SS 304, SS 316.
Standards: ISO 898-2, ASTM F568.
4. Slant U-Bolts
Best for: Angled and custom mounting applications.
Designed to match non-standard surface angles.
Thread length and coating options available.
Materials: Galvanized steel, stainless steel.
Finishes: Zinc-coated, epoxy-coated, SS 304, SS 316.
5. L-Bolts
Best for: Concrete anchoring and foundation reinforcement.
Custom bend angles (90°, 120°, or custom).
Materials: Hot-dip galvanized steel, stainless steel.
Finishes: Zinc-plated, SS 304, SS 316.
Standards: ASTM A307, ISO 898-1.
6. Roof Top V-Bolts
Best for: Rooftop installations and railings.
Tailored for high-strength, vibration-resistant needs.
Materials: Stainless steel, powder-coated steel.
Finishes: Hot-dip galvanized, SS 304, SS 316.
Standards: ISO 898-2, ASTM F568.
Customization Options
We manufacture bolts to your exact specifications, including: ✔ Diameter & Length: M6 – M48 (Metric) / 1/4″ – 2″ (Imperial) or per request.
- Thread Type: Fully or partially threaded, custom threading available.
- Materials: Stainless steel (304, 316), galvanized steel, carbon steel.
- Finishes: Hot-dip galvanized, zinc-plated, epoxy-coated.
- Standards Compliance: DIN, ISO, ASTM-certified bolts for industrial reliability.
- Bend Angles & Shapes: U, J, L, V, or custom geometries.
DIN 3570 – U-Bolts Size Chart
| DN | D (mm) | d (mm) | L (mm) | l1 (mm) | A (mm) | M | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 15 | 21.3 | 25 | 65 | 35 | 35 | 10 | 0.068 |
| 20 | 26.9 | 30 | 70 | 40 | 40 | 10 | 0.075 |
| 25 | 33.7 | 38 | 76 | 40 | 48 | 10 | 0.094 |
| 32 | 42.4 | 46 | 86 | 50 | 56 | 10 | 0.095 |
| 40 | 48.3 | 52 | 92 | 50 | 62 | 10 | 0.103 |
| 50 | 60.3 | 64 | 109 | 50 | 76 | 12 | 0.178 |
| 65 | 76.1 | 82 | 125 | 50 | 94 | 12 | 0.210 |
| 80 | 88.9 | 94 | 138 | 50 | 106 | 12 | 0.229 |
| 100 | 114.3 | 120 | 171 | 60 | 136 | 16 | 0.530 |
| 125 | 139.7 | 148 | 191 | 60 | 164 | 16 | 0.611 |
| 150 | 168.3 | 176 | 217 | 60 | 192 | 16 | 0.695 |
| 175 | 193.7 | 202 | 249 | 60 | 218 | 16 | 0.797 |
| 200 | 219.1 | 228 | 283 | 70 | 248 | 20 | 1.391 |
| 250 | 273.0 | 282 | 334 | 70 | 302 | 20 | 1.693 |
| 300 | 323.9 | 332 | 385 | 70 | 352 | 20 | 1.940 |
| 350 | 355.6 | 378 | 435 | 70 | 402 | 24 | 3.000 |
| 400 | 406.4 | 428 | 487 | 70 | 452 | 24 | 3.000 |
| 500 | 508.0 | 530 | 589 | 70 | 554 | 24 | 4.260 |