National Marker N221960 Hook Eye Turnbuckle 5/16x9 in

Product Description

The NATIONAL MARKER N221960 is a hook eye turnbuckle designed for tightening and drawing together lines, cables, and rigging assemblies. Constructed with a stainless steel frame and an aluminum hex-shaped body, this turnbuckle is built for durability in corrosive environments. The hook and eye ends allow for quick attachment to cables or anchor points without requiring disassembly. The eyes are passivated for superior corrosion resistance, and the overall assembly is nonmagnetic, making it suitable for sensitive installations. At 0.198 pounds, it is lightweight enough for overhead and marine rigging applications handled by tradespeople and riggers alike.

This turnbuckle is well suited for marine, coastal, and outdoor applications where atmospheric corrosion is a primary concern. The hex-shaped body allows for adjustment either by hand or with a standard wrench, supporting quick tensioning of guy wires, safety cables, structural bracing lines, and similar rigging. It is sold individually and is appropriate for both light commercial and residential applications where stainless hardware is specified.

Key Features

• Stainless steel construction with passivated eyes for corrosion resistance in marine and outdoor environments
• Nonmagnetic assembly suitable for installations near sensitive equipment
• Hex-shaped aluminum body enables hand or wrench adjustment without additional tooling
• Hook and eye configuration for fast attachment to cables and anchor points
• Lightweight at 0.198 pounds, appropriate for overhead and portable rigging

Compatibility

Designed as an OEM-style replacement or standard-use turnbuckle for marine rigging, outdoor cable tensioning, and general-purpose line tightening applications requiring stainless steel hardware.

Installation Notes

Installation is typically performed by riggers, marine technicians, or maintenance tradespeople familiar with cable tensioning hardware. Before adjusting or replacing a turnbuckle under load, relieve tension from the line and secure adjacent components. Use a properly sized wrench on the hex body to achieve final tensioning, and verify that all threaded end fittings are engaged by the minimum recommended thread engagement for the body size. Follow applicable rigging standards and manufacturer load ratings when specifying for structural or life-safety applications.

Technical Specifications

• Body Material: Aluminum
• End Fitting Material: Stainless Steel
• Thread Size: 5/16 inches
• Overall Length: 9 inches
• Weight: 0.198 pounds
• End Configuration: Hook and Eye
• Corrosion Resistance: Passivated eyes, nonmagnetic construction
• Unit of Measure: Each

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N221960