Stainless Steel Hex Washer Head Self Drilling Screws
What are hex washer head self drilling screws? Hex washer head self drilling screws are stainless screws with a hex head, an integrated washer face, and a drill-point tip that bores its own hole in metal. Made from hardened 410 stainless and premium Ultra Stainless, they drive with a nut driver for high torque and a wide clamp, and resist rust in roofing, siding, and outdoor metal work.
Why hex washer head is the roofing and metal-building standard
The hex head lets you drive with a nut driver at high torque without cam-out, which is exactly what self drilling through metal purlins and panels needs, and the built-in washer face spreads load for a secure clamp. It is the standard head for metal roofing, siding, and steel building work. 410 stainless is the reliable choice, while Ultra Stainless is the premium upgrade for higher corrosion resistance on longer-life or tougher exposures. For a weathertight seal on exposed roofing, choose the EPDM-washer version.
Why choose hex washer head self drilling screws
- High torque: hex head drives with a nut driver without cam-out.
- Wide clamp: integrated washer face spreads load on metal.
- Two grades: 410 stainless and premium Ultra Stainless.
- No pilot needed: the drill point bores its own hole in metal.
Common applications for hex washer head self drilling screws
- Metal roofing and siding
- Steel building and purlin work
- HVAC and ductwork
- Outdoor and higher-corrosion metal work (Ultra Stainless)
For a weathertight seal, see stainless hex washer EPDM head self drilling screws, and browse the 410 and Ultra Stainless self drilling ranges.
Hex Washer Head Self Drilling Screws FAQ
What stainless grade are these?
Hardened 410 stainless and premium Ultra Stainless, both hard enough to drill their own hole in metal.
Do I need the EPDM version for roofing?
For exposed roofing where water intrusion matters, yes. The bonded EPDM washer seals the hole. A plain hex washer head does not seal.
When should I choose Ultra Stainless over 410?
Choose Ultra Stainless for higher corrosion resistance on longer-life or tougher outdoor exposure. 410 is the reliable standard for most metal roofing.