Rigging Hardware
American High-Strength Bow Shackle (Bolt, Hex Nut & Cotter Pin Type) — 5/8 (WLL 3-1/4T)
Industrial-grade G2130 bolt-type anchor shackle, 5/8" nominal size, rated WLL 3-1/4 tons (3.25 T / 3250 kg). Hot-dip galvanized body with red bolt, hex nut and cotter pin for triple-lock rigging security.
Request a Quote1. Product Overview
This is an industrial heavy-duty American high-strength bow shackle (G2130 bolt-type anchor shackle) with a 5/8" nominal body size and a rated working load limit (WLL) of 3-1/4 tons (3.25 TON / 3250 kg). It uses a hot-dip galvanized body with a forged alloy steel red bolt, hex nut and stainless cotter pin in a triple-lock design. Built for long-term fixed connections, frequent vibration, multi-directional loads and harsh weather in critical overhead lifting, heavy rigging and towing, it is widely recognized as one of the safest shackle designs in global industry.
2. Key Features & Design Highlights
- 5/8" body, 3.25T WLL: The bow body is 5/8" (approx. 15.88 mm). The red high-strength bolt is typically one size larger (often 3/4", approx. 19.05 mm) for superior shear strength. Clear body markings include WLL 3-1/4T, 5/8; CE marking can be arranged per order when required by your market. Breaking load typically reaches 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.
- Hot-dip galvanized body with red hardware: The silver galvanized body resists corrosion in outdoor and marine environments. The red bolt and nut provide high-visibility contrast for quick field inspection and safety awareness.
- Forged alloy steel: 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
- Building steel structures and large space-frame lifting—as the core link between crane hooks, wire rope slings, chain assemblies and lifting lugs.
- 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.
- Vehicle recovery, heavy cargo lashing 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 | 5/8" (approx. 15.88 mm) |
| Working Load Limit (WLL) | 3-1/4 T (3.25 TON / 3250 kg) |
| Material | High-strength alloy steel, heat treated |
| Locking System | Load bolt + hex nut + stainless cotter pin |
| Finish | Hot-dip galvanized body (silver) / red bolt and nut |
| Markings | WLL 3-1/4T, 5/8 (CE marking available upon request) |
Safety Guidelines
- Never omit the cotter pin—confirm it is fully inserted and legs spread before each use.
- Do not exceed the rated 3.25 ton working load limit; verify total load and sling angles before lifting.
- Do not weld, heat or modify—the heat treatment must not be altered.
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