SPA SHACKLES

Hardware

are heavy-duty, versatile load-connecting hardware components featuring a bow-shaped body and a threaded screw pin, engineered for multi-leg sling loading, quick attachment/detachment, and secure connections in overhead lifting, rigging, and marine operations.

Designed with a wide bow body to accommodate multiple sling legs, synthetic webbing, or wire rope eyes without crowding or side-loading distortion.

Threaded pin design allows for rapid assembly and disassembly without requiring specialized tools, making it ideal for temporary or pick-and-place rigging setups.

Manufactured from high-strength forged carbon steel or alloy steel, with permanently embossed Working Load Limit (WLL) and trace code markings.

Proof-tested and certified in full accordance with ASME B30.26, Federal Specification RR-C-271 (Type IVA, Class 2), and OSHA standards.

Class	Pin & Body Design	Material Grade	Typical Applications	Primary Advantage
Carbon Steel SPA Shackle	Threaded Screw Pin / Anchor Bow	Forged Carbon Steel (Grade A)	General Overhead Lifting, Crane Hooks	Industry Standard & Fast Rigging Setup
Alloy High-Capacity SPA Shackle	Threaded Screw Pin / Anchor Bow	Forged Alloy Steel (Grade B)	Heavy Industrial Lifting, Offshore Modules	Higher WLL per Size / Reduced Weight
316 Stainless Steel SPA Shackle	Threaded Screw Pin / Anchor Bow	Precision Cast 316 Stainless Steel	Marine Mooring, Subsea, Food/Chem Plants	Maximum Resistance to Corrosion & Saltwater

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Model Naming & Series Documentation

Example Designation: SWR-SPA-0075-G209-HDG-EA
SWR: Brand / Supplier Identifier (Southwest Wire Rope)
SPA: Product Category (Screw Pin Anchor Shackle)
0075: Nominal Shackle Body Size (0.750 in / 3/4 in / 19 mm)
G209: Industry Standard Equivalent Designator (Carbon G209 / Alloy G2130 / Stainless SS209)
HDG: Surface Finish (Hot-Dip Galvanized HDG / Self-Colored SC / Polished Stainless SS)
EA: Packaging Unit (Each EA / Bulk Box BOX)

Carbon Steel Screw Pin Anchor (SPA) Shackles
- Size Range: 3/16 in – 2-1/2 in (Body Diameter)
- Capacity Range: 1/3 ton – 55 tons Working Load Limit (WLL)
- Finish Options: Hot-Dip Galvanized (HDG) or Self-Colored
- Primary Feature: Meets Fed Spec RR-C-271 Type IVA Class 2; widely used standard for general crane hoisting, multi-leg synthetic sling connections, and towing attachments where frequent connection/disconnection is required
- Compliance: ASME B30.26 / RR-C-271 / OSHA
Alloy High-Capacity SPA Shackles
- Size Range: 3/8 in – 2 in (Body Diameter)
- Capacity Range: 2 tons – 50+ tons Working Load Limit (WLL)
- Finish Options: Hot-Dip Galvanized bow with painted alloy pin
- Primary Feature: Engineered with heat-treated alloy steel to provide significantly higher WLL ratings in a smaller physical footprint compared to standard carbon shackles, saving headroom and weight on heavy rigs
- Compliance: ASME B30.26 / RR-C-271 / OSHA
316 Stainless Steel SPA Shackles
- Size Range: 1/4 in – 1-1/2 in (Body Diameter)
- Capacity Range: 1/2 ton – 12 tons Working Load Limit (WLL)
- Finish Options: Passivated and polished 316 Marine-Grade Stainless Steel
- Primary Feature: Maximum immunity to pitting, rusting, and saltwater oxidation; essential for yacht rigging, subsea marine research, offshore platforms, and sanitary processing environments
- Compliance: ASME B30.26