Point No.3 Bi-Metal Self Drilling Screws, Austenitic Stainless Steel Hex Flange Head, for Metal to Metal & Metal to Purlin

Product Overview
These Austenitic Bi-Metal Self Drilling Screws feature Hex Washer Head, Point No.3 drill point and bi-metal construction (304/A2 & 316/A4+420). Designed for metal to metal and metal to purlin fastening with max 6mm drilling capacity, they offer excellent corrosion resistance with Ruspert or Dacromet coatings, ideal for heavy metal frame applications.
Key Features
Austenitic Bi-Metal Construction: Combines the corrosion resistance of 304/A2 or 316/A4 stainless steel body with the hardness of AISI 420 drill point, ensuring both durability and rust protection for long service life.
Hex Washer Head Design: Provides a large bearing surface for even load distribution, preventing pull-through and ensuring a secure, stable installation.
Point No.3 Drill Tip: Precision-engineered drill point enables efficient self-drilling with a maximum drilling capacity of 6mm, eliminating the need for pre-drilling holes and reducing installation time.
Double Thread Design: Optimized double thread geometry enhances grip and pull-out strength, ensuring secure fastening of insulated foam panels to steel purlins in heavy metal frame applications.
Ruspert or Dacromet Coatings: Premium anti-corrosion coatings provide extended protection against rust and environmental damage, making the screws suitable for outdoor and humid environments.
High Performance Specs: Recommended screw driver speed of MAX 2500 R.P.M. ensures optimal drilling efficiency and prevents overheating or bit damage during installation.
Common Applications
Attaching metal rails to metal purlins in construction projects
Fastening insulated foam panels to steel purlins
Heavy metal frame applications and structural installations
Metal to metal and metal to wood composite fastening
Outdoor construction projects requiring corrosion-resistant fasteners