Stewart Fastener 0840ASHZ Hex Washer Head Zinc Screws 100pk

Product Description

The STEWART FASTENER 0840ASHZ is a Type A sheet metal screw with a hex washer head finish, supplied in a jar of 100 fasteners. Sized at No. 8 x 2-1/2 inches, these screws feature a zinc coating for corrosion resistance in typical indoor and light-duty applications. The hex washer head design allows for driver engagement with a standard hex bit or nut driver, providing consistent torque and a built-in washer bearing surface that distributes clamping load and reduces pull-through. These fasteners are commonly installed by HVAC technicians, sheet metal workers, plumbers, and general contractors working with light-gauge metal components.

Type A sheet metal screws are intended for use in light-gauge sheet metal, thin metal panels, and similar substrates where a self-tapping thread form is appropriate. The 2-1/2-inch length provides adequate thread engagement for multi-layer assemblies or thicker material stacks. The hex washer head style is a standard choice for ductwork, equipment enclosures, access panels, and general sheet metal fabrication in residential and light commercial settings.

Key Features

• Type A self-tapping thread form for use in light-gauge sheet metal and thin metal substrates
• No. 8 x 2-1/2 inch size for thread engagement in multi-layer or thicker material assemblies
• Hex washer head allows driving with a standard hex bit or nut driver
• Integrated washer bearing surface distributes clamping load and reduces pull-through risk
• Zinc coating provides corrosion resistance for typical indoor service environments
• Sold as a jar of 100 screws for convenient jobsite storage and dispensing

Compatibility

Designed as a standard Type A hex washer head sheet metal screw suitable for light-gauge metal fabrication, ductwork assembly, equipment enclosures, and general sheet metal fastening applications.

Installation Notes

Installation is performed by sheet metal workers, HVAC technicians, and general contractors using a hex bit driver or nut driver sized to the head. Verify substrate gauge and material thickness are appropriate for a Type A self-tapping screw before driving. Apply consistent torque to seat the washer head flush without stripping the material or fastener head.