N221-978 Ss Hook Eye Turnbuckle 3/8 X 10-1/2 Inch Marine

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N221-978 is a stainless steel hook and eye turnbuckle rated for marine and outdoor applications. It measures 3/8 inch body diameter by 10-1/2 inches in length and carries a safe working load of 220 pounds. The hex-shaped body allows adjustment by hand or with a standard wrench, making tensioning straightforward in the field. The stainless steel construction is passivated for additional corrosion resistance and is non-magnetic, which matters in applications where magnetic interference is a concern. Licensed contractors, riggers, and marine service technicians use this hardware to tighten or draw together lines and cables in demanding outdoor environments.

This turnbuckle is suited for marine rigging, cable tensioning, and general outdoor hardware applications where atmospheric corrosion resistance is required. The passivated stainless steel finish holds up in saltwater and high-humidity environments without the degradation common to plated carbon steel alternatives. It is sold in bulk packaging with a package quantity of five units per pack, making it practical for service vehicles and job site stock.

Key Features

• Safe working load of 220 pounds
• Passivated stainless steel construction resists atmospheric and saltwater corrosion
• Non-magnetic material suitable for sensitive installation environments
• Hex-shaped body allows hand or wrench adjustment without special tooling
• Hook and eye end configuration for versatile line and cable attachment
• Bulk pack of 5 units for efficient job site restocking

Compatibility

Designed as an OEM-style replacement and general-use stainless steel turnbuckle for marine rigging, cable tensioning, and outdoor structural applications requiring a 3/8 inch by 10-1/2 inch hook and eye configuration.

Installation Notes

Installation is typically performed by marine riggers, contractors, or qualified maintenance technicians. Before tensioning, confirm that anchor points and connected hardware are rated at or above the 220-pound safe working load. Use the hex body with an appropriate wrench to achieve even tensioning without over-rotating the end fittings. Inspect threads and locking hardware periodically in high-vibration or dynamic-load environments.