Product Description
No.8 Pan Phillips Zinc Plated Steel Self-Drilling Screws
These No.8 pan-head self-drilling screws are designed for fastening timber and wood-based materials to suitable steel sections. The integral drill point drills into the steel and the tapping thread forms a mating thread during installation, helping to reduce the need for a separate pilot-drilling operation.
Manufactured from case-hardened steel with a zinc-plated finish, these screws feature a Phillips cross recess and a pan head that provides a broad bearing surface against the material being secured.
Product Details
- Imperial size: No.8
- Standard thread designation: ST4.2
- Nominal thread diameter: 4.2mm
- Material: Case-hardened steel
- Finish: Zinc plated
- Head type: Pan head
- Drive type: Phillips cross recess H
- Point type: Self-drilling point
- Application: Wood-to-steel fastening
- Legacy standard: DIN 7504N H
- Current standard: BS EN ISO 15481:1999
The screw length is measured from beneath the pan head to the end of the drill point. Dimensions are provided as a guide and should be checked before ordering where they are critical to the application.
Features and Benefits
- Designed for securing timber and wood-based materials to steel
- Integrated drill point drills and forms a mating thread during installation
- Pan head provides a broad bearing surface
- Phillips cross recess allows installation using commonly available driver bits
- Case-hardened steel construction provides the hardness required for drilling and thread forming
- Zinc-plated finish provides general corrosion resistance
- Available in packs of 10, 20, 50, 100, 250, 500 and 1,000 screws
Typical Applications
- Attaching timber battens to steel sections
- Workshop and construction projects
- Vehicle and trailer bodywork
- General fabrication and maintenance
- Fixing timber components to suitable sheet steel
Installation Guidance
Use the correct Phillips driver bit and apply steady pressure while drilling. Avoid excessive driver speed or over-tightening, as this can damage the cross recess, strip the formed thread or reduce the holding strength.
Select a length that passes completely through the timber and provides sufficient drill-point and thread engagement with the steel. Maximum drilling capacity depends on the steel grade, thickness, installation speed and drill-point design, so suitability should be confirmed for critical applications.
Browse our complete range of self-drilling Tek screws or view more pan Phillips self-drilling screws.
| A | B | C | D | E | F | G | H |
| * | 4.2mm | * | 13mm | * | 7.8mm | * | 3mm |
| * | 4.2mm | * | 16mm | * | 7.8mm | * | 3mm |
| * | 4.2mm | * | 19mm | * | 7.8mm | * | 3mm |
| * | 4.2mm | * | 25mm | * | 7.8mm | * | 3mm |
| * | 4.2mm | * | 38mm | * | 7.8mm | * | 3mm |
Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first.
