National Marker N221754 Eye Eye Turnbuckle 5/16 in X 9 in

Product Description

The NATIONAL MARKER N221754 is a 5/16-inch by 9-inch eye and eye turnbuckle designed for tensioning and adjusting tension in cable, rod, and wire rope assemblies. The hex-shaped body is manufactured from aluminum with a zinc finish, while the eyes are steel for added strength at the connection points. This turnbuckle is a standard hardware component used by riggers, contractors, and trade professionals in structural, marine, and general tensioning applications. The aluminum body keeps weight low without sacrificing dimensional integrity, and the zinc finish provides a basic level of corrosion resistance for typical indoor and light outdoor use.

This turnbuckle fits into applications where a compact, adjustable tensioning device is required between two eye-terminated connections. Common uses include tensioning fence wire, guy wires, safety cables, and structural bracing in both residential and light commercial settings. The eye-and-eye configuration allows attachment to hooks, shackles, or fixed anchor points. It is sold individually and is suited for installations where moderate load tensioning is needed at a 5/16-inch thread size.

Key Features

• Eye and eye configuration for direct connection to anchor points or rigging hardware
• Hex-shaped aluminum body for wrench engagement during tensioning
• Zinc finish on body provides corrosion resistance for light outdoor use
• Steel eyes for strength at the load-bearing connection points
• 5/16-inch thread diameter with 9-inch take-up length
• Lightweight aluminum construction reduces overall assembly weight

Compatibility

Designed as a standard eye-and-eye turnbuckle replacement or new-installation component for 5/16-inch tensioning assemblies. Part of the NATIONAL MARKER catalog model 2170BC series.

Installation Notes

Installation is typically performed by riggers, contractors, or general tradespeople using standard open-end or adjustable wrenches on the hex body. Before tensioning, ensure all connected hardware is rated for the intended load and that anchor points are secure. Do not over-torque the turnbuckle body, as aluminum threads can be damaged by excessive force. Inspect eyes and connecting hardware for proper seating before applying full tension.

Technical Specifications

• Thread Diameter: 5/16 inches
• Take-Up Length: 9 inches
• Body Shape: Hex
• Body Material: Aluminum
• Finish: Zinc
• Eye Material: Steel
• Configuration: Eye and Eye
• Weight: 0.204 pounds
• UPC: 00038613124929

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N221754