Rigging Hardware
American High-Strength D Shackle (Bolt, Hex Nut & R-Pin Type) — G-2150 / 5/8 (WLL 3-1/4T)
Industrial G-2150 bolt-type chain shackle, 5/8" nominal size, rated WLL 3-1/4 tons (3.25 T / 3250 kg). Hot-dip galvanized body with blue bolt, hex nut and R-pin for vibration-resistant straight-pull connections.
Request a Quote1. Product Overview
This is an industrial lifting-grade American high-strength D shackle (straight chain shackle / G-2150 bolt-type chain 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). 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 combines a hot-dip galvanized body with a forged alloy steel blue load bolt, hex nut and R-pin (hairpin clip)—a triple anti-loosening design built for long-term fixing, high-frequency vibration and heavy chain connections.
2. Key Features & Design Highlights
- 5/8" straight body, 3.25T WLL: D-body nominal size is 5/8" (approx. 15.88 mm). The blue high-strength bolt is typically one size larger (3/4", approx. 19.05 mm) for superior shear and bending strength. Clear body markings include WLL 3 1/4T, 5/8; CE marking can be arranged per order when required by your market.
- Bolt-nut-R-pin triple safety: A smooth through-bolt replaces a threaded screw pin. After the hex nut is tightened, an R-pin is inserted through the bolt tail hole—preventing self-loosening from vibration. The R-pin is easier to remove without tools than a split cotter pin and is reusable.
- Straight D (chain) body: Narrower internal space than bow shackles—ideal for single chain, master link or turnbuckle connections with minimal lateral movement.
- Hot-dip galvanized body, blue bolt: Dense silver zinc layer on the body resists rain, humidity and marine corrosion. The blue-painted bolt provides 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 lifting lugs in straight pull assemblies.
- Fixed guy wires, telecom masts, bridge cables and steel space frames where R-pin lock-out is essential.
- Factory overhead cranes, port cargo grabs and mining haulage under continuous vibration.
- Recovery vehicles and transport securement—straight towing and tie-down under severe pull and shock.
4. Specifications
| Product Type | American high-strength D/chain shackle (bolt, hex nut & R-pin) |
|---|---|
| Standard Reference | G-2150 / RR-C-271 type |
| Nominal Body Size | 5/8" (approx. 15.88 mm) |
| Bolt Size | 3/4" (approx. 19.05 mm) |
| Working Load Limit (WLL) | 3-1/4 T (3.25 TON / 3250 kg) |
| Material | High-strength alloy steel, heat treated |
| Locking System | Through load bolt + hex nut + R-pin |
| Finish | Hot-dip galvanized body / blue bolt |
| Markings | WLL 3 1/4T, 5/8 (CE marking available upon request) |
Safety Guidelines
- Never omit the R-pin—confirm it is fully inserted through the bolt tail hole 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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