Columbus McKinnon M655G 1-1/8" Super Strong Galvanized Screw Pin Anchor Shackle 12 Ton

The Columbus McKinnon M655G is a 1-1/8" Super Strong Screw Pin Anchor Shackle finished in hot-dip galvanize, purpose-built for demanding industrial lifting, rigging, and tie-down applications. Engineered from technically advanced domestic (USA) micro alloy steel, this shackle delivers a working load limit (WLL) of 12 tons (24,000 lbs) with a 6:1 design factor — making it 17 to 50% stronger than comparable-sized standard carbon shackles.

The anchor (bow) shackle design features a larger, rounded "O" shape that allows for side loading and multiple connections, providing flexibility across a wide variety of rigging configurations. The screw pin closure offers easy assembly and removal in the field, making this an ideal choice for low-vibration and stationary applications.

Key Features:

• Working Load Limit (WLL): 12 Ton (24,000 lbs)
• Design Factor: 6:1 (ultimate strength = 6x WLL)
• Shackle Size: 1-1/8"
• Pin Diameter: 1-1/4"
• Opening Width: 1-27/32"
• Manufacturing Process: Drop forged for superior strength and ductility
• Material: Domestically produced (USA) micro alloy steel
• Finish: Hot-dip galvanized per ASTM-A153 for corrosion resistance
• Proof Load: 2.2 times working load limit
• Permanently marked with trade size and WLL in tons
• Recommended for low-vibration and stationary applications

Important Safety Note: Screw pin anchor shackles can handle angular pulls; however, pulling at an angle significantly reduces the working load limit. Do not use screw pin shackles if the pin can roll under load and unscrew. Never exceed the rated working load limit.