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The NATIONAL MARKER N221747 is a 1/4 inch by 7-1/2 inch eye and eye turnbuckle designed for tensioning and adjusting tension in wire rope, cable, and rod assemblies. The body is hex-shaped for easy wrench engagement and is manufactured from aluminum with a zinc finish. The eyes are steel for added strength at the connection points. This hardware is commonly installed by riggers, contractors, and maintenance trades working on structural, marine, or general utility tensioning applications.
This turnbuckle is suited for light-duty to medium-duty tensioning tasks in both indoor and outdoor settings. The eye and eye configuration allows direct connection to hooks, shackles, or anchor points on both ends without additional hardware. The zinc finish provides corrosion resistance, making it appropriate for use in moderately exposed environments. It is sold individually and carries a minimum order quantity of 10 units.
Designed as an OEM-style replacement or standard-fit component for eye and eye turnbuckle applications using 1/4 inch diameter fittings in cable, wire rope, or rod tensioning systems.
Turnbuckles should be installed by qualified rigging or mechanical trades familiar with tensioning hardware. Inspect threads and body for damage before installation and ensure all connections are fully engaged before applying load. Do not exceed the working load limit for the hardware grade and size. Follow applicable ASME and OSHA rigging guidelines when used in load-bearing or overhead applications.
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