Overview
The drill point is part of the screw, which drills and taps in one operation. The drill point length must exceed the total steel thickness to be penetrated, otherwise the screw jams or snaps.
The screw’s corrosion class (for example Class 3 or Class 4 to AS 3566) should match or exceed the roof sheet. Stainless or capped screws are used in marine or chemical environments.
Uses
- 01Fixing roof and wall sheet to purlins
- 02Fixing insulated panels
- 03Flashings, gutters and roof accessories
- 04Light-gauge framing
Selection and acceptance checks
- Choose the drill point length for the purlin thickness
- Check corrosion class and EPDM washer
- Use a depth-setting driver to avoid crushing the washer
Reference standards
- AS 3566
- ISO 15480
For reference only. The standards for each project follow its design documents, current Vietnamese codes and the investor’s requirements.
Reference brands
Brands are listed for reference; World Steel selects suppliers according to each project’s specification.
Sectors and solutions
Sectors
FDI factories Logistics and cold storage Agriculture and food
World Steel services
Steel structures and PEB Expansion and upgrade Warranty and maintenance
