4mm x 8mm Torx Countersunk Screw for Hard Plastics (PT45) - T15 Drive | A2 Stainless Steel
| Quantity |
Unit Price
(ex. VAT)
|
Unit Price
(inc. VAT)
|
|---|---|---|
| 2 - 49 | £0.43 | £0.52 |
| 50 - 99 | £0.26 | £0.31 |
| 100 - 249 | £0.17 | £0.21 |
| 250 - 499 | £0.13 | £0.16 |
| 500 - 999 | £0.11 | £0.13 |
| 1000 - 4999 | £0.08 | £0.10 |
| 5000 + | £0.07 | £0.08 |
£0.52 / each
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Product Specification
| Thread Size | 4.0mm |
| Thread Length | 8mm |
| Material | A2 Stainless Steel |
| Head Diameter | 7.35mm |
| Head Height | 1.90mm |
| Drive | T15 |
| Head Style | Countersunk |
Frequently Bought Together
Total Price: £0.00
4mm x 8mm Torx Countersunk PT45 Screw for Hard Plastics | A2 Stainless Steel
Developed for automotive interior plastic components, this 4mm x 8mm Torx Countersunk Screw is part of the PT45 range for hard plastics. The trilobular 45° thread helps form a secure mating thread in compatible materials such as polycarbonate and fibre-reinforced plastics.
What Are Torx Countersunk PT45 Screws?
Torx Countersunk PT45 Screws are thread-forming fasteners developed for harder plastics. Their 45° trilobular thread has shorter flanks than PT30 screws and is suited to materials such as polycarbonate and fibre-reinforced plastics while the countersunk head allows a flush installation into a matching recess.
Common Applications
- Lighting Products: Secures rigid plastic bezels, covers and housings where a flush finished face is useful.
- Food and Catering Equipment: Supports suitable rigid-plastic assemblies where corrosion-resistant A2 Stainless Steel is preferred.
- Automotive Components: Fastens rigid plastic trim and moulded parts where a low-profile screw head and Torx drive are beneficial.
- Industrial Equipment: Fastens hard-plastic guards, covers and instrument housings on machinery and control equipment.
4mm x 8mm Torx Countersunk PT45 Screw Dimensions
- Thread Size: 4.0mm
- Thread Length: 8mm
- Head Diameter: 7.35mm
- Head Height: 1.90mm
- Drive: T15
- Material: A2 Stainless Steel
- Head Style: Countersunk
Key Benefits
- PT45 geometry provides a strong drive-to-strip ratio for compatible hard-plastic assemblies.
- Correct pilot-hole diameter, boss size and countersink geometry should be selected for the material being assembled.
- 4mm thread size and 8mm thread length provide the primary fastening dimensions.
- Trilobular geometry concentrates thread-forming pressure at three points rather than around a fully round profile.
View the complete Torx Countersunk PT45 Screws for Hard Plastics range for alternative sizes. For guidance on PT30 vs PT45 threads, pilot-hole sizing, boss design and torque selection, read our Engineering Guide to Screws for Plastic. For further help, contact the Vital Parts technical sales team on 01233 713581.
Fri 8.30 am - 3.30 pm
