National Mfg N221-960 Hook Eye Turnbuckle 5/16x9 Stainless

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N221-960 is a stainless steel hook and eye turnbuckle designed for tightening and drawing together lines and cables under load. Measuring 5/16 inch in diameter and 9 inches in length, this turnbuckle features a hex-shaped body that allows for hand adjustment or wrench use. The stainless steel construction has been passivated for enhanced corrosion resistance and is non-magnetic, making it well suited for marine and coastal environments. Safe working load is rated at 175 pounds. This package contains 10 units sold in bulk format.

This turnbuckle is intended for marine and outdoor applications where atmospheric corrosion resistance is a primary requirement. Typical uses include tensioning rigging lines, wire rope, cable runs, and similar applications on boats, docks, fencing, and other outdoor structures. The hook and eye end configuration allows for straightforward attachment to anchor points and cable terminations without specialized hardware. Passivated stainless steel construction maintains integrity in saltwater, humid, and other corrosive atmospheric conditions.

Key Features

• Stainless steel construction passivated for superior corrosion resistance
• Non-magnetic material suitable for sensitive marine environments
• Hex-shaped body allows adjustment by hand or with a standard wrench
• 175-pound safe working load
• Hook and eye end configuration for versatile cable and line attachment
• Package of 10 units sold in bulk

Compatibility

Designed as an OEM-style replacement or direct-use turnbuckle for 5/16 inch diameter cable and line tensioning applications in marine and outdoor installations.

Installation Notes

Installation is typically performed by riggers, marine technicians, or experienced tradespeople. Before installation, ensure all connected lines and cables are fully relieved of load tension. Thread the hook and eye ends onto the turnbuckle body evenly to maintain balanced load distribution, and use the hex body with a wrench to reach final tension. Do not exceed the rated safe working load of 175 pounds, and inspect fittings periodically for wear or corrosion in harsh environments.