Rigging Hardware
American High-Strength D Shackle (Screw Pin Type) — G-210 / 3/4 (WLL 4-3/4T)
Industrial G-210 screw-pin chain shackle, 3/4" nominal size, rated WLL 4-3/4 tons (4.75 T / 4750 kg). Hot-dip galvanized body with red screw pin for fast connect/disconnect in straight-pull lifting and rigging.
Request a Quote1. Product Overview
This is a medium to heavy-duty industrial American high-strength D shackle (straight chain shackle / G-210 screw-pin 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. It keeps the classic G-210 screw-pin quick-connect design—no separate nut or cotter pin required—combined with a hot-dip galvanized body and high-visibility red screw pin, making it ideal for frequent assembly and disassembly, temporary connections and medium to heavy straight-pull lifting.
2. Key Features & Design Highlights
- 3/4" straight body, 4.75T WLL: D-body nominal size is 3/4" (approx. 19.05 mm). The red high-strength screw pin 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. Breaking load typically reaches 4× or 6× WLL.
- Fast screw-pin connection: Precision male thread on the pin screws directly into the body. The wide red flat head with a small hole allows hand tightening or final torquing with a bar or wrench—very efficient for high-frequency rigging turnover.
- Straight D (chain) body: Narrower internal space than bow shackles—ideal for single chain, master link or turnbuckle connections with minimal lateral movement, suited to straight, high-load tension and lifting.
- Hot-dip galvanized body, red pin: Dense silver zinc layer on the body resists rain, humidity and marine corrosion. The red-painted screw pin 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 heavy lifting lugs in straight pull assemblies.
- Port and logistics handling—rapid change of slings and fittings during bulk cargo and container operations.
- Factory and mobile crane lifting—everyday hoisting, assembly and turnover of equipment where frequent disconnection is required.
- Heavy recovery vehicles and transport securement—quick attachment and release under straight pull conditions.
4. Specifications
| Product Type | American high-strength D/chain shackle (screw pin) |
|---|---|
| Standard Reference | G-210 / RR-C-271 type |
| Nominal Body Size | 3/4" (approx. 19.05 mm) |
| Pin 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 | Integral threaded screw pin |
| Finish | Hot-dip galvanized body (silver) / red screw pin |
| Markings | WLL 4 3/4T, 3/4 (CE marking available upon request) |
Safety Guidelines
- Do not use in long-term fixed systems with continuous vibration or rope rotation—use a G-2150 bolt-nut-cotter pin shackle instead.
- Confirm the pin is fully screwed in and the flat head is flush with the body before loading—never lift with the pin only partially engaged.
- 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-209) instead.
- Do not weld, heat or modify—the heat treatment must not be altered.
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