Hillman Fasteners 41542 Self Drilling Screw 75 Pack

Product Description

The HILLMAN FASTENERS 41542 is a self drilling screw designed for fast, reliable fastening in metal-to-metal and metal-to-substrate applications. Sized at 8-18 x 3/4 inches with a hex washer head, this screw drills its own pilot hole and taps its own thread in a single operation, eliminating the need for pre-drilling. Constructed from hardened steel with a zinc finish for corrosion resistance, it is suited for light-gauge sheet metal work in HVAC ductwork, electrical enclosures, and similar trade applications. Each pack contains 75 screws.

This screw is commonly used by HVAC technicians, electricians, and sheet metal workers during installation and service of light-gauge metal assemblies. The hex washer head provides a bearing surface that distributes load and allows drive with a standard nut driver or hex bit. The 8-18 thread form and hardened steel construction make it appropriate for securing duct sections, electrical boxes, metal framing, and light structural sheet metal components in both residential and commercial settings.

Key Features

• Self drilling tip eliminates pre-drilling and tapping steps
• Hex washer head is compatible with standard nut drivers and hex bit drivers
• Hardened steel construction provides strength in sheet metal applications
• Zinc finish offers corrosion resistance for typical indoor and enclosed installations
• 75-count pack suits jobsite and service-van stocking

Compatibility

Designed as a general-purpose 8-18 x 3/4 inch self drilling fastener for light-gauge sheet metal applications typical in HVAC, electrical, and related trade work.

Installation Notes

Installation is performed with a hex nut driver or hex bit and standard power drill or impact driver set to a controlled torque to avoid stripping the head or overdriving through thin material. Confirm material thickness is within the rated range for the drill point before driving. No pre-drilling is required. Follow applicable NEC or SMACNA guidelines when fastening electrical enclosures or ductwork components.