Hillman Fasteners 70331 Sheet Metal Screw 14x0.75in 100pk

Product Description

The HILLMAN FASTENERS 70331 is a zinc-plated sheet metal screw designed for fastening light-gauge metal panels, ductwork, electrical enclosures, and similar sheet metal assemblies. The No. 14 x 0.75-inch size features a slotted hex washer head, which accepts both a flat-blade screwdriver and a nut driver or hex socket for faster installation with a power tool. The zinc plating provides basic corrosion resistance suitable for dry or mildly humid indoor environments. Each package contains 100 screws, making this SKU a practical shop-stock or job-lot quantity for HVAC technicians, electricians, and sheet metal workers.

Sheet metal screws of this type are used across residential and light commercial applications wherever self-tapping fasteners are required in thin metal substrates. Common uses include securing HVAC duct sections and access panels, attaching electrical junction box covers, fastening metal framing components, and general light-gauge fabrication work. The hex washer head bearing surface distributes clamping load and helps prevent pull-through in thinner gauges.

Key Features

• No. 14 x 0.75-inch self-tapping sheet metal screw
• Slotted hex washer head accepts flat-blade screwdriver or hex nut driver
• Zinc plating for corrosion resistance in dry indoor environments
• 100-piece pack suitable for shop stock or job-lot use
• Hex washer head bearing surface reduces pull-through risk in light-gauge metal

Compatibility

Designed as a general-purpose self-tapping fastener for light-gauge sheet metal applications including HVAC ductwork, electrical enclosures, and metal panel assemblies.

Installation Notes

Sheet metal screws of this type are installed by HVAC technicians, electricians, and sheet metal workers using a flat-blade screwdriver or a 1/4-inch hex nut driver. De-energize any electrical enclosure or HVAC system before fastening panels or covers. Pre-drilling is not typically required in light-gauge metal, but pilot holes may be used in heavier stock to avoid distortion. Follow applicable NEC or SMACNA guidelines for fastener spacing on duct and enclosure assemblies.