Value Collection 4.8A1BS Size 8 Button Head Torx Sheet Metal Screw

Product Description

The VALUE COLLECTION 4.8A1BS is a Size 8 sheet metal screw with a button head and Torx drive, designed for fastening into sheet metal and thin-gauge materials. It measures 1 inch in length under the head and is manufactured from Grade 18-8 stainless steel, providing solid corrosion resistance in exposed or moisture-prone installations. The T15 Torx drive reduces cam-out during high-torque driving, making it well suited for production assembly and field service work. A Type A point allows this screw to self-tap into pre-punched or drilled sheet metal without a separate nut. Electricians, HVAC technicians, and sheet metal workers rely on this fastener for enclosure assembly, ductwork, and equipment panel work.

This screw is appropriate for light-gauge sheet metal applications found in residential and commercial HVAC equipment, electrical enclosures, and general mechanical assemblies. The button head profile sits low and distributes clamping load across a wider bearing surface than a flat head, which helps prevent pull-through in thinner gauges. It is sold individually but requires a minimum order quantity of 10 units, making it practical for restocking field kits or bench stock.

Key Features

• Grade 18-8 stainless steel construction provides corrosion resistance for indoor and moderately humid environments
• T15 Torx drive reduces cam-out compared to Phillips or slotted drives
• Type A self-tapping point threads into pre-punched sheet metal without a nut or insert
• Button head profile offers a low-profile, wide-bearing-surface finish
• Inch measurement system with 1 inch length measured under the head

Compatibility

Designed as a standard inch-system sheet metal fastener suitable for light-gauge sheet metal assemblies, HVAC equipment panels, electrical enclosures, and similar thin-material applications where a Size 8 self-tapping screw with a Torx drive is specified.

Installation Notes

Installation is performed with a T15 Torx bit driver or a T15 Torx socket. Ensure the receiving material is pre-punched or drilled to the appropriate pilot hole diameter for a Size 8 Type A screw before driving. Do not overdrive — button head screws in thin sheet metal can strip the tapped hole if torque is excessive. Stainless steel fasteners are susceptible to galling; apply appropriate anti-seize compound when driving into stainless mating material.