Hillman Fasteners 47224 Zinc Hex Washer Head Self-drilling Screw

Product Description

The HILLMAN FASTENERS 47224 is a zinc-plated hex washer head self-drilling screw sized at 1/4 inch diameter by 1 inch length, sold in a box of 12. Self-drilling screws eliminate the need for a pilot hole, combining the drill bit and fastener in a single step. The hex washer head provides a broad bearing surface and is driven with a standard hex driver or nut driver. Zinc plating offers corrosion resistance for general-purpose indoor and light outdoor applications. These screws are commonly used by HVAC technicians, sheet metal workers, and general contractors for attaching metal panels, ductwork components, and light-gauge structural members.

The 47224 is suited for light commercial and residential installations where a reliable metal-to-metal or metal-to-substrate connection is required. Typical applications include HVAC duct fabrication and assembly, metal framing, electrical enclosure attachment, and general sheet metal work. The self-drilling point reduces installation time and eliminates the separate drilling step on compatible material thicknesses.

Key Features

• Self-drilling point eliminates pre-drilling on compatible substrates
• Hex washer head provides a wide bearing surface and positive driver engagement
• Zinc plating provides corrosion resistance for general-purpose use
• 1/4 inch diameter by 1 inch length suits common light-gauge metal fastening tasks
• Sold in a box of 12 for job-site or shop use

Compatibility

Designed as a general-purpose self-drilling screw for light-gauge metal-to-metal and metal-to-substrate fastening applications in HVAC, sheet metal, and construction trades.

Installation Notes

Drive with a hex nut driver or hex-bit socket rated for the fastener size. Confirm substrate material thickness is within the rated drilling capacity of the screw point before installation. Do not overdrive — stop when the washer head seats firmly against the substrate to avoid stripping. Follow applicable building and mechanical codes for fastener spacing and pull-out requirements in structural or pressure-boundary applications.