ALLOY BTA SHACKLES

Hardware

are high-capacity, heavy-duty load-connecting fittings constructed from heat-treated quenched and tempered alloy steel, featuring an anchor bow body combined with a bolt, nut, and secondary cotter pin retention system engineered for permanent installations, critical lifting, and heavy multi-leg rigging where pin rotation under load is expected.

Utilizes a threaded load bolt, heavy hex nut, and stainless steel cotter pin to form a fail-safe mechanical lock that prevents the pin from unscrewing or rotating loose under dynamic friction or vibration.

Heat-treated alloy steel construction (Grade 8 / Grade 10 equivalent) delivers significantly higher Working Load Limit (WLL) ratings in a compact footprint compared to standard carbon steel shackles.

Deep omega/anchor bow geometry comfortably accommodates multiple sling legs, crane hooks, or synthetic roundslings without crowding or side-loading binding.

Manufactured, proof-tested, and permanently stamped with forged WLL, trace code, and angle indicators in accordance with ASME B30.26 and Federal Specification RR-C-271 (Type IVA, Class 3).

Class	Pin & Body Design	Material Grade	Typical Applications	Primary Advantage
Standard Alloy BTA (G2140)	Bolt, Nut & Cotter Pin / Anchor Bow	Quenched & Tempered Alloy Steel	Permanent Overhead Rigging, Crane Blocks	High Strength-to-Weight Ratio & Continuous Safety Lock
High-Tonnage Heavy-Duty BTA	Reinforced Bolt & Nut Assembly	High-Grade Forged Alloy Steel	Offshore Platforms, Heavy Marine & Shipyards	Extreme Load Capacity (Up to 400T+) & Side-Load Resistance
Wide-Body Synthetic BTA	Extra-Wide Radius Bow & Heavy Pin	Heat-Treated High-Grade Alloy Steel	Heavy Synthetic Roundslings & Grommets	Increases Sling Contact Area to Prevent Pinching

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Model Naming & Series Documentation

Example Designation: SWR-BTA-0100-G2140-HDG-EA
SWR: Brand / Supplier Identifier (Southwest Wire Rope)
BTA: Product Category (Bolt Type Anchor Shackle)
0100: Nominal Shackle Body Size (0100 = 1.00 in / 25 mm)
G2140: Model & Standard Equivalent (Standard Alloy BTA G2140 / High-Tonnage G2140-HT / Wide-Body WBA)
HDG: Surface Finish (Hot-Dip Galvanized Body with Painted Bolt Pin HDG / Epoxy Coated EPC)
EA: Packaging Unit (Each EA)

Standard Alloy Bolt Type Anchor (BTA) Shackles (G2140 / Grade 8)
- Size Range: 3/8 in – 2-1/2 in (9.5 mm – 63.5 mm body diameter)
- Capacity Range: 2 tons – 55 tons Working Load Limit (WLL)
- Design Factor: 5:1 Safety Factor (2T to 21T) / 5.4:1 (30T to 55T)
- Primary Feature: Recommended for permanent installations or long-term rigging applications where loads may slide or rotate against the pin; eliminates the risk of pin backing out compared to standard screw pin shackles
- Compliance: ASME B30.26 / RR-C-271 Type IVA Class 3 / OSHA
High-Tonnage Heavy-Duty Alloy BTA Shackles
- Size Range: 2-3/4 in – 6 in+ (70 mm – 150 mm+ body diameter)
- Capacity Range: 75 tons – 400+ tons Working Load Limit (WLL)
- Design Factor: 4:1 to 5.4:1 depending on tonnage classification
- Primary Feature: Engineered specifically for massive industrial lifts, marine salvage, and subsea installation; equipped with RFID tracking capability and forged 45° angle alignment indicators
- Compliance: ASME B30.26 / RR-C-271 / OCIMF / DNV Approved Options
Wide-Body Alloy BTA Shackles (Synthetic Sling Saver)
- Size Range: 1 in – 4 in+ Body Width
- Capacity Range: 7.5 tons – 300+ tons WLL
- Primary Feature: Features an increased bow radius that expands the bearing surface area for synthetic roundslings and wire rope grommets by up to 58%, maintaining 100% rated sling WLL and significantly extending sling service life
- Compliance: ASME B30.26 / WSTDA