Itw Buildex 560039 Self-drilling Screw 12 Hex Washer 100pk

Product Description

The ITW BUILDEX 560039 is a No. 12 self-drilling screw designed for fast, reliable fastening in steel-to-steel and steel-to-substrate applications common in HVAC, electrical, and light construction work. Featuring a hex washer head and hex drive, this screw delivers high torque transfer and a broad bearing surface that resists pull-through. The No. 3 drill point eliminates the need for a pilot hole in light-gauge steel. Each screw measures 3 inches under the head and carries a 12-14 thread pitch. Sold in a 100-piece package, the 560039 is a standard supply item for sheet metal mechanics, HVAC installers, and general contractors.

This screw is used in light commercial and residential construction where fastening into light-gauge steel framing, ductwork, metal decking, or similar substrates is required. The No. 3 drill point is rated for penetrating thicker steel gauges than a No. 2 point, making it appropriate for structural attachments and heavier sheet metal assembly. HVAC technicians commonly use this fastener for duct connections, equipment mounting, and metal trim work where a secure, weather-resistant hex washer head seating is needed.

Key Features

• No. 3 drill point drills its own pilot hole in light-to-medium gauge steel without pre-drilling
• Hex washer head provides a wide bearing surface and resists pull-through under load
• Hex drive accepts standard 5/16-inch hex driver bits for high-torque power tool use
• 3-inch length under head suits deeper substrate fastening and multi-layer assemblies
• No. 12-14 thread size delivers strong thread engagement in steel applications
• 100-piece package quantity supports job-site and shop inventory efficiency

Compatibility

Designed as a standard No. 12 self-drilling screw for use with light-gauge steel framing, sheet metal ductwork, and similar metal substrates requiring a No. 3 drill point fastener.

Installation Notes

Installation should be performed by qualified HVAC technicians, sheet metal mechanics, or electricians familiar with self-drilling fastener applications. Use a hex-drive bit matched to the fastener head to avoid cam-out and fastener damage. Apply consistent, steady pressure when driving to allow the drill point to engage before thread engagement begins. Do not overdrive — stop driving when the washer head seats flush against the substrate to avoid stripping the threads or deforming the material.