Rigging Hardware
American High-Strength Bow Shackle (Bolt, Hex Nut & Cotter Pin Type)
Industrial-grade G2130 bolt-type anchor shackle, 3/4" nominal size, rated WLL 4-3/4 tons (4.75 T / 4750 kg). Triple-lock design for long-term rigging, heavy lifting and towing.
Request a Quote1. Product Overview
This is an industrial heavy-duty American high-strength bow shackle (G2130 bolt-type anchor shackle) with a 3/4" nominal body size and a rated working load limit (WLL) of 4-3/4 tons (4.75 TON / 4750 kg). Unlike common screw-pin shackles (G209), this model uses a bolt, hex nut and safety cotter pin for triple-lock security. It is engineered for long-term connections, frequent vibration and multi-directional loads in critical overhead lifting, rigging and towing. It is widely recognized as one of the safest shackle designs in global industry.
2. Key Features & Design Highlights
- 3/4" heavy body, 4.75T WLL: The bow body is 3/4" (approx. 19.05 mm). The red high-strength bolt is typically one size larger (often 7/8", approx. 22.2 mm) for superior shear strength. WLL 4-3/4T with high safety factor; breaking load typically 4× or 6× WLL depending on manufacturing standard.
- Bolt-nut-cotter pin triple safety: A through-bolt replaces the threaded screw pin. After the hex nut is tightened, a stainless cotter pin is inserted and spread at the bolt tail—preventing self-loosening from rope rotation, wind or vibration during lifting.
- Wide bow (anchor) design: Wider internal space than chain (Dee) shackles—accepts multiple slings, hooks or links and allows greater angular movement for multi-directional and converging rigging.
- High-visibility coating: Yellow body and red bolt/nut for easy field inspection. Pre-treatment and durable paint resist outdoor, port and marine corrosion.
- Forged alloy steel: Body and pin are drop-forged from high-strength alloy steel, quenched and tempered. Excellent fatigue and low-temperature toughness; under overload the steel tends to deform rather than snap brittle.
3. Primary Applications
- Heavy crane and port lifting—as the core link between wire rope slings, chain assemblies and load points.
- Long-term guy wires, wind turbine towers, telecom masts, bridge cables and steel space frames where cotter-pin lock-out is essential.
- Offshore platforms, marine mooring and deck rigging under continuous wave and vibration.
- Heavy recovery, mining haulage and off-road towing in mud, shock and multi-direction pull conditions.
4. Specifications
| Product Type | American high-strength bow shackle (bolt, hex nut & cotter pin) |
|---|---|
| Standard Reference | G2130 / RR-C-271 type |
| Nominal Body Size | 3/4" (approx. 19.05 mm) |
| Working Load Limit (WLL) | 4-3/4 T (4.75 TON / 4750 kg) |
| Material | High-strength alloy steel, heat treated |
| Locking System | Load bolt + hex nut + stainless cotter pin |
| Finish | Yellow body / red bolt and nut |
| Load Advantage | Multi-directional loading; vibration and self-loosening resistant |
Safety Guidelines
- Never omit the cotter pin—confirm it is fully inserted and legs spread before each use.
- Reject shackles with visible permanent deformation, bent bolts, or wear exceeding 10% of original cross-section.
- Do not weld, heat or modify—the heat treatment must not be altered.
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