National Mfg N179-150 Lag Screw 5/16x1.5 in Black Steel 6pk

Product Description

The NATIONAL MFG/SPECTRUM BRANDS HHI N179-150 is a steel hex-head lag screw sized at 5/16 inches by 1.5 inches, sold in a 6-pack. Each screw is manufactured from steel with a zinc-plated base and a satin black painted finish, providing corrosion resistance and a consistent decorative appearance. This fastener is designed specifically for use with heavy duty ornamental strap and T-hinges, making it the correct hardware pairing for hinge installations that demand both structural holding power and a finished look. Installers rely on lag screws of this type when securing hinges to wood framing, gates, or structural panels where a standard wood screw would not provide adequate pull-out resistance.

This lag screw is intended for use with the 858 Heavy Duty Ornamental Strap Hinge and the 859 Heavy Duty Ornamental T-Hinge. It is appropriate for residential and light commercial applications including wood gates, fence doors, barn hardware, and decorative door installations. The satin black finish matches the hinge hardware finish, maintaining a uniform appearance across the completed installation. The hex-head drive allows for installation with a standard socket or wrench, seating the fastener firmly without cam-out.

Key Features

• Sized at 5/16 inches by 1.5 inches for correct fitment with 858 and 859 series hinges
• Steel construction with zinc plating for corrosion resistance
• Satin black painted finish matches ornamental hinge hardware
• Hex-head drive for positive wrench engagement and controlled torque application
• Sold as a 6-pack to supply a full hinge installation set

Compatibility

Designed for use with the 858 Heavy Duty Ornamental Strap Hinge and the 859 Heavy Duty Ornamental T-Hinge from NATIONAL MFG/SPECTRUM BRANDS HHI.

Installation Notes

Installation is typically performed by a carpenter, general contractor, or experienced DIYer. Pre-drilling a pilot hole into the wood substrate is strongly recommended to prevent splitting and to ease screw seating. Use a socket wrench or nut driver sized for the hex head and avoid overtightening, which can strip the wood or damage the finish. Ensure the hinge is properly aligned before driving lag screws to final depth.