M8 M16 Brass L & J Hook Bolt with nut washer T1 T2 T3 Metal bolts Brass plating
| Attribute | Value |
|---|---|
| Usage | Fastening |
| Size | Various sizes available |
| Style | L & J Hook Bolt with nut washer assortment |
| Head Style | L & J Hook Bolt |
| Strength | High |
| Finish | Polished, Gold, Yellow, Zinc Plating |
| Manufacturer | JIA SHAN Hardward Company |
| Length | As customisation |
| Package | Small Packing+Carton Packing+Pallet |
| Standard | DIN |
| Package Quantity | 100 pieces |
| Shape | J bolt/ L bolt |
| Measurement System | INCH, Metric |
| Port | Shenzhen |
| Quality | Inspection before shipment |
| Color | As customisation |
| Material | Steel:304/316/301/310/201 |
Product Description:
- Fixed footbolt is also called short footbolt, poured together with the foundation for fixing equipment without strong vibration and shock.
- Activity foot bolt (long foot bolt) is removable, used for fixing heavy machinery with strong vibration and shock.
- Expansion anchor bolt is used for fixing simple static equipment or auxiliary equipment with specific installation requirements.
- Bonding anchor bolt is a commonly used type with similar methods and requirements as other types.
One time burying method: When pouring concrete, bury the ground bolt. When the tower is controlled by tilting, the anchor bolts should be buried at one time.
Pre-reserved hole method: Clean the holes after equipment is in place, insert foot bolts, then use non-shrinkage fine gravel concrete for pouring and compacting after positioning.
Special requirements apply for distance from bolt center to foundation edge, minimum diameters, and seismic action considerations.
| No. | C% | Cr% | Ni% | Mo% |
|---|---|---|---|---|
| 304 | 0.07 | 17.5-19.5 | 8.0-10.5 | / |
| 316 | 0.08 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 |
| 301 | 0.15 | 16.0-18.1 | 6-8 | / |
| 310 | 0.08 | 24-26 | 19-22 | / |
| 304L | 0.03 | 18-20 | 8-12 | / |
| 316L | 0.03 | 16-18 | 10-14 | 2-3 |
| 321 | 0.08 | 17-19 | 9-12 | / |
Grade 8.8 Zinc plating" usually refers to High strength bolts or fasteners of strength class 8.8 with an electro galvanised surface.
1. Grade 8.8 (8.8)
Indicates the mechanical property grade of the bolt, where:
‘8’ denotes tensile strength ≥ 800 MPa
‘.8’ indicates that the yield strength is 80% of the tensile strength
The material is generally medium carbon steel or low carbon alloy steel, and after heat treatment (quenching + tempering).
2 Caution
Due to the high strength of Grade 8.8 bolts, there is a risk of hydrogen embrittlement, and dehydrogenation (baking) is usually required after galvanising.
For outdoor use or corrosive environments, hot-dip galvanising or Zn-flake coating is recommended.
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