4mm x 20mm Pozi Countersunk Screw for Hard Plastics (PT45) - PZ2 Drive | BZP Steel
| Quantity |
Unit Price
(ex. VAT)
|
Unit Price
(inc. VAT)
|
|---|---|---|
| 1 - 49 | £0.27 | £0.32 |
| 50 - 99 | £0.16 | £0.19 |
| 100 - 249 | £0.11 | £0.13 |
| 250 - 499 | £0.08 | £0.10 |
| 500 - 999 | £0.07 | £0.08 |
| 1000 - 4999 | £0.05 | £0.06 |
| 5000 + | £0.04 | £0.05 |
£0.32 / each
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Product Specification
| Thread Size | 4.0mm |
| Thread Length | 20mm |
| Material | Steel BZP |
| Head Diameter | 7.35mm |
| Head Height | 1.90mm |
| Drive | PZ2 |
| Head Style | Countersunk |
Frequently Bought Together
Total Price: £0.00
4mm x 20mm Pozi Countersunk PT45 Screw for Hard Plastics | Bright Zinc Plated Steel
This 4mm x 20mm PT45 Screw is intended for engineering plastics used in manufactured assemblies. It uses a Countersunk head, PZ2 Pozi recess and Bright Zinc Plated Steel construction with a trilobular thread form developed for hard-plastic fastening.
What Are Pozi Countersunk PT45 Screws?
PT45 Pozi Countersunk Screws use a three-lobed thread body that concentrates forming pressure around three points of the pilot hole. This geometry allows the screw to form a mating thread in harder plastics while the head can finish level with the surrounding component surface.
Common Applications
- Manufactured Plastic Parts: Supports repeatable assembly of moulded hard-plastic components with correctly sized pilot holes and countersinks.
- Furniture Components: Secures suitable engineering-plastic fittings and panels used in furniture manufacture.
- Electrical Enclosures: Secures hard-plastic covers and panels where a countersunk surface finish is required.
- Appliance Housings: Provides a dedicated fastening method for rigid plastic covers and moulded appliance parts.
4mm x 20mm Pozi Countersunk PT45 Screw Dimensions
- Thread Size: 4.0mm
- Thread Length: 20mm
- Head Diameter: 7.35mm
- Head Height: 1.90mm
- Drive: PZ2
- Material: Steel BZP
- Head Style: Countersunk
Key Benefits
- Trilobular geometry concentrates thread-forming pressure at three points rather than around a fully round profile.
- Bright Zinc Plated Steel provides an economical metallic finish for general indoor hard-plastic assemblies.
- The engineering guide provides PT45 pilot-hole tables, boss-sizing guidance and thread-selection information.
- 45° trilobular PT45 thread form is designed for harder plastics and reinforced materials.
View the complete Pozi Countersunk PT45 Screws for Hard Plastics range for alternative sizes and materials. 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
