Hillman Fasteners 47204 Hex Washer Self Drilling Screw

Product Description

The HILLMAN FASTENERS 47204 is a hex washer head self drilling screw designed for fast, reliable fastening in metal-to-metal and light structural applications. At 1/2 inch in length and size 8, this screw features a built-in drill point that eliminates the need for a pilot hole, saving time on the job. The zinc coating provides basic corrosion resistance for general interior and protected exterior use. Each box contains 12 screws, making it a practical unit for service vans, job-site kits, or parts-room stock. HVAC, electrical, and general mechanical contractors commonly reach for self drilling screws when securing sheet metal panels, brackets, and light-gauge framing components.

This screw is well suited for light-gauge sheet metal work commonly found in HVAC duct systems, electrical enclosures, metal framing, and general mechanical installations. The hex washer head allows for quick driving with a nut driver or hex bit, which is standard equipment for most trade professionals. The size 8 shank is appropriate for thin-gauge metal-to-metal connections where a clean, secure bite is needed without pre-drilling.

Key Features

• Self drilling point eliminates need for a pilot hole, speeding up installation
• Hex washer head is compatible with standard nut drivers and hex-bit drivers
• Zinc coating provides corrosion resistance for general-use environments
• Size 8 diameter at 1/2 inch length suits light-gauge sheet metal applications
• Sold in a box of 12 for convenient job-site or parts-room stocking

Compatibility

Designed as a general-purpose self drilling fastener suitable for light-gauge metal-to-metal connections in HVAC, electrical, and mechanical trade applications.

Installation Notes

Install using a nut driver or hex-bit drill driver set to a controlled torque to avoid stripping the head or overdriving through thin metal. No pilot hole is required, but ensure the mating material is within the rated gauge range for self drilling screws of this size. Power down or de-energize any enclosure or panel before fastening in proximity to live electrical components. Follow applicable NEC or local mechanical code requirements for fastener type and spacing.