Rigging Hardware
American High-Strength D Shackle (Bolt, Hex Nut & Cotter Pin Type) — G-2150 / 3/4 (WLL 4-3/4T)
Industrial G-2150 bolt-type chain shackle, 3/4" nominal size, rated WLL 4-3/4 tons (4.75 T / 4750 kg). Full hot-dip galvanized body, bolt, nut and cotter pin for long-term, vibration-resistant straight-pull connections.
Request a Quote1. Product Overview
This is a medium to heavy-duty industrial American high-strength D shackle (straight chain shackle / G-2150 bolt-type chain 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 classic bow shackles, this model uses a straight D-type narrow body for better alignment and stability in single-direction pulls. The locking system uses a full hot-dip galvanized body with a high-strength load bolt, hex nut and safety cotter pin—a triple anti-loosening design built for long-term fixing, high-frequency vibration and heavy chain connections in demanding overhead work.
2. Key Features & Design Highlights
- 3/4" straight body, 4.75T WLL: D-body nominal size is 3/4" (approx. 19.05 mm). The high-strength bolt is typically one size larger (7/8", approx. 22.2 mm) for superior shear and bending strength. Clear body markings include WLL 4 3/4T, 3/4; CE marking can be arranged per order when required by your market.
- Bolt-nut-cotter pin triple safety: A smooth through-bolt replaces a threaded screw pin. After the hex nut is tightened, a stainless cotter pin is inserted through the bolt tail hole and spread—eliminating self-loosening from vibration during lifting or permanent fixing.
- Straight D (chain) body: Narrower internal space than bow shackles—ideal for single chain, master link or turnbuckle connections with minimal lateral movement.
- Full hot-dip galvanizing: Body, bolt, nut and cotter pin are hot-dip galvanized for a dense silver zinc layer with excellent weather and wear resistance—resisting rust in outdoor, port and marine environments.
- 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
- Grade 80/100 chain sling terminations—aligning chain with hooks, master links or heavy lifting lugs in straight pull assemblies.
- Long-term guy wires, wind turbine towers, telecom masts, bridge cables and steel space frames where cotter-pin lock-out is essential.
- Mining haulage, port bulk cargo grabs and overhead crane systems under continuous vibration and shock.
- Heavy recovery vehicles and transport securement—straight towing and tie-down under severe pull and vibration.
4. Specifications
| Product Type | American high-strength D/chain shackle (bolt, hex nut & cotter pin) |
|---|---|
| Standard Reference | G-2150 / RR-C-271 type |
| Nominal Body Size | 3/4" (approx. 19.05 mm) |
| Bolt Size | 7/8" (approx. 22.2 mm) |
| Working Load Limit (WLL) | 4-3/4 T (4.75 TON / 4750 kg) |
| Material | High-strength alloy steel, heat treated |
| Locking System | Through load bolt + hex nut + stainless cotter pin |
| Finish | Full hot-dip galvanized (silver) |
| Markings | WLL 4 3/4T, 3/4 (CE marking available upon request) |
Safety Guidelines
- Never omit the cotter pin—confirm it is fully inserted and legs spread before each use.
- D-type shackles are for straight, single-direction loading only—do not use for wide-angle multi-leg or converging pulls; use a bow shackle (G-2130 or G-209) instead.
- Do not weld, heat or modify—the heat treatment must not be altered.
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