Minerallac 78808J Hex Head Tek Screw 8-18x1/2

Product Description

The MINERALLAC 78808J is a hex head self-drilling Tek screw sized 8-18 x 0.5 inches. It is designed for fastening light-gauge metal framing, sheet metal, and mechanical components without a pre-drilled pilot hole. The self-drilling tip bores through the substrate as the fastener is driven, creating its own mating thread for a secure hold. This screw is commonly used by electricians, HVAC technicians, and sheet metal workers during equipment installation and panel assembly tasks.

The 78808J is suited for light commercial and residential applications where a reliable metal-to-metal or metal-to-substrate connection is needed. Typical uses include securing electrical enclosures, HVAC duct flanges, sheet metal panels, and mechanical support brackets. The hex head allows for consistent torque application with a standard nut driver or hex bit, making installation efficient in tight or repetitive fastening situations.

Key Features

• Self-drilling Tek tip eliminates the need for a pilot hole in light-gauge metal
• Hex head design allows driving with a standard nut driver or hex socket bit
• Size 8-18 x 0.5 inches suits a wide range of thin sheet metal applications
• Consistent thread formation for reliable holding strength in metal substrates

Compatibility

Designed as a standard 8-18 x 0.5-inch hex head self-drilling Tek screw suitable for light-gauge sheet metal fastening applications in HVAC, electrical, and mechanical installations.

Installation Notes

This fastener is typically installed by HVAC technicians, electricians, or sheet metal workers using a nut driver or hex-tip power driver. Ensure the substrate material and gauge are within the rated range for a size 8-18 self-drilling screw before driving. Do not overdrive the fastener, as stripping the mating thread or deforming thin sheet metal will reduce holding strength. Follow applicable mechanical and electrical codes for fastener type and spacing requirements.

Technical Specifications

• Size: 8-18 x 0.5 inches
• Head Type: Hex Head
• Drive Type: Self-Drilling (Tek)
• UPC: 08593708212

Standard Information

• Brand: MINERALLAC
• Manufacturer Part Number: 78808J