Stewart Fastener J1008ACHZ Hex Washer Head Tapping Screw Zinc

Product Description

The STEWART FASTENER J1008ACHZ is a No. 10 x 1/2 inch Type A hex washer head tapping screw with a zinc finish, sold individually from a jar of 100. Type A tapping screws are self-starting fasteners designed to cut their own threads into sheet metal, light-gauge steel, and similar materials without a pre-tapped hole. The hex washer head provides a built-in bearing surface that distributes clamping load and resists pull-through. The zinc coating offers corrosion resistance suitable for general indoor and light-duty applications. These screws are a staple in HVAC ductwork assembly, electrical panel and enclosure fabrication, and general sheet-metal work across the trades.

These fasteners are well suited to residential and light commercial applications where fast, reliable thread engagement in sheet metal is required. Common installation scenarios include securing duct sections, attaching sheet-metal brackets, fastening electrical enclosures, and similar light-gauge assembly tasks. The hex washer head is compatible with standard hex drivers and nut drivers, making installation fast in tight spaces. They are packaged in a jar of 100, and this listing covers a single screw.

Key Features

• No. 10 x 1/2 inch size — a standard dimension for sheet-metal and light-gauge steel work
• Type A thread form — self-starting, designed for thin sheet metal without a pre-tapped hole
• Hex washer head — integrated washer surface distributes load and resists pull-through
• Zinc finish — provides basic corrosion resistance for general-purpose and indoor use
• Compatible with hex drivers and standard nut drivers for fast installation

Compatibility

Designed as a standard Type A hex washer head tapping screw for use in sheet metal, light-gauge steel, and similar substrates commonly found in HVAC, electrical, and general sheet-metal fabrication work.

Installation Notes

Installation is performed by sheet-metal workers, HVAC technicians, electricians, and general tradespeople using a hex driver or nut driver. No pre-tapping is required for Type A screws in thin sheet metal, but a pilot hole may be needed in thicker or harder materials. Ensure the fastener is driven straight to avoid stripping the formed threads. Follow applicable codes such as SMACNA duct construction standards when using tapping screws in ductwork assemblies.

Technical Specifications

• Thread Size: No. 10
• Length: 1/2 inch
• Head Type: Hex Washer Head
• Thread Type: Type A Tapping
• Finish: Zinc
• Package Quantity: 100 per jar (sold per each)
• UPC: 662352110921

Standard Information

• Brand: STEWART FASTENER
• Manufacturer Part Number: J1008ACHZ