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CM 3/16″ Galvanized
Screw Pin Anchor Shackle

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CM 3/16″ M645G Screw Pin Anchor Shackles .50 ton. Columbus McKinnon Screw Pin Anchor Shackles are made from technically advanced micro-alloy steel to provide the greatest possible strength. A quick assessment of working load limits is marked on both the shackle and the screw pin. Working Load Limit of .5 tons.

SKU: M645G. Categories: , , .

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CM 3/16″ Galvanized Screw Pin Anchor Shackle

Columbus McKinnon Alloy Shackles are made from the best possible materials that give them a strength rating approximately 50% higher than a comparable-sized carbon shackle. CM shackles meet dimensional and performance requirements of RR-C-271. CM Smart ID RFID technology is available as an option on screw pin anchor shackles sizes 1/2″ to 1-3/4″

Screw pin anchor shackles are specifically designed for use on projects where the shackle is needed to be frequently removed. It is recommended for over head lifting, and should be moused in some applications. See Use and care for further details.

Additional Information

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Weight 0.06 lbs
Use & Care:
  • CM shackles show major deformation before failure.
  • Mousing (screw pin shackle) is a secondary securement method used to secure screw pin from rotation or loosening. Annealed iron wire is looped through a hole in the collar of the pin and around the adjacent leg of shackle body with wire ends securely twisted together
  • Always inspect every shackle before each load to ensure the safety of the project .
Features and Benefits:
  • All shackle bodies and pins are forged from alloy steel, heat treated and tempered
  • All shackles are marked with size (inches and millimeters) and working load limit in tons
  • Maximum strength equals five times working load limit


For over 70 years, Tway Lifting Products has partnered with Columbus McKinnon to offer the finest hoists and level tools available anywhere. Columbus McKinnon is known for manufacturing high-quality hoist products that provide the best possible user experience. This level of quality aligns with what we work towards every day here at Tway.

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