Rigging Hardware
American High-Strength D Shackle (Bolt, Hex Nut & Cotter Pin Type) — G-2150 / 7/8 (WLL 6-1/2T)
Heavy-duty G-2150 bolt-type chain shackle, 7/8" nominal size, rated WLL 6-1/2 tons (6.5 T / 6500 kg). Hot-dip galvanized body with red bolt, hex nut and cotter pin for long-term, vibration-resistant connections.
Request a Quote1. Product Overview
This is a heavy industrial American high-strength D shackle (straight chain shackle / G-2150 bolt-type chain shackle) with a 7/8" nominal body size and a rated working load limit (WLL) of 6-1/2 tons (6.5 TON / 6500 kg). Unlike classic bow (anchor) shackles, this model uses a straight D-type narrow body for better alignment in single-direction pulls and reduced side sway. The locking system combines a hot-dip galvanized body with a forged alloy steel red load bolt, hex nut and safety cotter pin—a triple anti-loosening design built for long-term fixing, high-frequency vibration, harsh weather and heavy chain connections.
2. Key Features & Design Highlights
- 7/8" straight body, 6.5T WLL: D-body nominal size is 7/8" (approx. 22.22 mm). The red high-strength bolt is typically one size larger (1", approx. 25.4 mm) for superior shear and bending strength. Clear body markings include WLL 6 1/2T, 7/8; CE marking can be arranged per order when required by your market. Breaking load typically reaches 4× or 6× WLL.
- 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 rope, chain or vibration during lifting or permanent fixing.
- Straight D (chain) body: Narrower internal space than bow shackles—ideal for single large chain, master link or turnbuckle connections with minimal lateral movement, suited to straight, high-load tension and lifting.
- Hot-dip galvanized body, red bolt: Dense silver zinc layer on the body resists rain, humidity and marine corrosion. The red-painted bolt and nut provide high-contrast visibility for field inspection.
- 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, military trucks and mining transport—straight towing and securement 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 | 7/8" (approx. 22.22 mm) |
| Bolt Size | 1" (approx. 25.4 mm) |
| Working Load Limit (WLL) | 6-1/2 T (6.5 TON / 6500 kg) |
| Material | High-strength alloy steel, heat treated |
| Locking System | Through load bolt + hex nut + stainless cotter pin |
| Finish | Hot-dip galvanized body / red bolt and nut |
| Markings | WLL 6 1/2T, 7/8 (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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