SLING SHACKLES

Hardware

are specialized load-connecting fittings engineered with extended contact radii and wide spool geometries to safely connect synthetic web slings and polyester roundslings without causing edge pinching, bunching, or WLL strength reduction.

Designed with an expanded bow curve or flat spool body that increases the sling contact area by up to 58%, preserving full load efficiency.

Matches the physical width and contour of synthetic webbing and roundslings, preventing internal strand crushing and edge abrasion.

Allows riggers to utilize 100% of the sling's rated capacity without applying standard shackle reduction factors.

Forged from high-strength alloy or carbon steel, proof-tested, and permanently stamped with capacity and traceability markings in accordance with ASME B30.26 and WSTDA standards.

Class	Body & Pin Configuration	Material Grade	Typical Applications	Primary Advantage
Web Sling Shackle (Spool)	Flat Bearing Spool / Screw Pin	Forged Carbon / Alloy Steel	Flat Synthetic Web Slings (Types 3, 4, 5)	Prevents Webbing Pinching & Edge Degradation
Wide-Body Sling Saver (BTA)	Large Radius Crown / Bolt & Nut Pin	Quenched & Tempered Alloy Steel	Heavy Polyester Roundslings & Grommets	Maintains 100% Sling WLL & Extends Service Life
Stainless Synthetic Sling Shackle	Smooth Flat Spool / Screw Pin	316 Precision Cast Stainless Steel	Marine Rigging & Cleanroom Lifting	Corrosion Resistance & Surface Protection

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Model Naming & Series Documentation

Example Designation: SWR-WSS-0300-SPA-HDG-EA
SWR: Brand / Supplier Identifier (Southwest Wire Rope)
WSS: Product Category (Web Sling Shackle WSS / Wide-Body Sling Saver WBS)
0300: Nominal Jaw Opening / Sling Web Width (0300 = 3.00 in / 75 mm)
SPA: Pin Style (Screw Pin Anchor SPA / Bolt Type Anchor BTA)
HDG: Surface Finish (Hot-Dip Galvanized HDG / Epoxy Painted Alloy EPC)
EA: Packaging Unit (Each EA)

Web Sling Shackles (Flat Spool Design)
- Sling Width Fit: 2 in – 6 in (50 mm – 150 mm web slings)
- Capacity Range: 3.25 tons – 12.5 tons Working Load Limit (WLL)
- Body Geometry: Features a wide, flat bearing spool that supports the full width of Type 3 (EE), Type 4 (EE), and Type 5 (EN) synthetic web slings
- Primary Feature: Distributes the lifting load evenly across the full width of the webbing, preventing edge bunching, severe stress concentrations, and premature webbing wear
- Compliance: ASME B30.26 / WSTDA
Wide-Body Synthetic Sling Saver Shackles (Bolt Type)
- Capacity Range: 7.5 tons – 300+ tons Working Load Limit (WLL)
- Body Geometry: Extra-wide radiused crown designed specifically for synthetic roundslings and high-capacity grommets
- Primary Feature: Increases the contact surface area between the shackle and round sling by up to 58%, eliminating the need for WLL capacity reductions and protecting internal load-bearing core fibers from pinching
- Compliance: ASME B30.26 / WSTDA / OSHA
Heavy-Duty Alloy Offshore Sling Shackles
- Capacity Range: Up to 500+ tons WLL
- Pin Termination: Heavy hex bolt, nut, and stainless steel cotter pin locking system
- Primary Feature: Engineered for heavy offshore module lifts using high-modulus HMPE or polyester rope grommets; equipped with smooth, extra-large radii to maximize rope strand longevity during heavy lifts
- Compliance: ASME B30.26 / DNV / OCIMF Approved Options

Example Designation: SWR-WSS-0300-SPA-HDG-EA
SWR: Brand / Supplier Identifier (Southwest Wire Rope)
WSS: Product Category (Web Sling Shackle WSS / Wide-Body Sling Saver WBS)
0300: Nominal Jaw Opening / Sling Web Width (0300 = 3.00 in / 75 mm)
SPA: Pin Style (Screw Pin Anchor SPA / Bolt Type Anchor BTA)
HDG: Surface Finish (Hot-Dip Galvanized HDG / Epoxy Painted Alloy EPC)
EA: Packaging Unit (Each EA)

Web Sling Shackles (Flat Spool Design)
- Sling Width Fit: 2 in – 6 in (50 mm – 150 mm web slings)
- Capacity Range: 3.25 tons – 12.5 tons Working Load Limit (WLL)
- Body Geometry: Features a wide, flat bearing spool that supports the full width of Type 3 (EE), Type 4 (EE), and Type 5 (EN) synthetic web slings
- Primary Feature: Distributes the lifting load evenly across the full width of the webbing, preventing edge bunching, severe stress concentrations, and premature webbing wear
- Compliance: ASME B30.26 / WSTDA
Wide-Body Synthetic Sling Saver Shackles (Bolt Type)
- Capacity Range: 7.5 tons – 300+ tons Working Load Limit (WLL)
- Body Geometry: Extra-wide radiused crown designed specifically for synthetic roundslings and high-capacity grommets
- Primary Feature: Increases the contact surface area between the shackle and round sling by up to 58%, eliminating the need for WLL capacity reductions and protecting internal load-bearing core fibers from pinching
- Compliance: ASME B30.26 / WSTDA / OSHA
Heavy-Duty Alloy Offshore Sling Shackles
- Capacity Range: Up to 500+ tons WLL
- Pin Termination: Heavy hex bolt, nut, and stainless steel cotter pin locking system
- Primary Feature: Engineered for heavy offshore module lifts using high-modulus HMPE or polyester rope grommets; equipped with smooth, extra-large radii to maximize rope strand longevity during heavy lifts
- Compliance: ASME B30.26 / DNV / OCIMF Approved Options