3.5mm x 20mm Pozi Countersunk Screw for Hard Plastics (PT45) - PZ1 Drive | A2 Stainless Steel

Product code: ZCPT45-35-20-A2
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3.5mm x 20mm Pozi Countersunk Screw for Hard Plastics (PT45) - PZ1 Drive | A2 Stainless Steel
3.5mm x 20mm Pozi Countersunk Screw for Hard Plastics (PT45) - PZ1 Drive | A2 Stainless Steel
3.5mm x 20mm Pozi Countersunk Screw for Hard Plastics (PT45) - PZ1 Drive | A2 Stainless Steel
3.5mm x 20mm Pozi Countersunk Screw for Hard Plastics (PT45) - PZ1 Drive | A2 Stainless Steel
3.5mm x 20mm Pozi Countersunk Screw for Hard Plastics (PT45) - PZ1 Drive | A2 Stainless Steel
3.5mm x 20mm Pozi Countersunk Screw for Hard Plastics (PT45) - PZ1 Drive | A2 Stainless Steel
Quantity
Unit Price
(ex. VAT)
Unit Price
(inc. VAT)
1 - 49 £0.42 £0.50
50 - 99 £0.25 £0.30
100 - 249 £0.17 £0.20
250 - 499 £0.12 £0.15
500 - 999 £0.10 £0.12
1000 - 4999 £0.08 £0.10
5000 + £0.06 £0.07

£0.50 / each


Average production time 14 + days.
Vital Parts - Here to make bulk ordering easy.

Product Specification
Thread Size 3.5mm
Thread Length 20mm
Material A2 Stainless Steel
Head Diameter 6.30mm
Head Height 1.65mm
Drive PZ1
Head Style Countersunk

Next Day or Standard Delivery available via DHL or Royal Mail.
Order by 4pm (UK) for same day dispatch, Monday to Thursday or 2pm Friday.

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Call our sales team on

01233 713581


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3.5mm x 20mm Pozi Countersunk PT45 Screw for Hard Plastics | A2 Stainless Steel

Where food and catering equipment components require a specialist plastic fastener, this 3.5mm x 20mm Pozi Countersunk PT45 Screw uses a trilobular 45° thread and A2 Stainless Steel construction. The flush head style is suited to assemblies where protruding screw heads are undesirable.

What Are Pozi Countersunk PT45 Screws?

A PT45 Countersunk screw provides a middle ground between a sharp 30° plastic thread and a conventional self tapping screw. Its shorter 45° thread and trilobular form make it particularly useful in hard materials where secure engagement and a strong drive-to-strip ratio are required.

Common Applications

  • Control Equipment: Fastens hard-plastic panels and housings used around sensors, switches and control systems.
  • Polycarbonate Housings: Forms a secure thread in suitable polycarbonate covers and housings while allowing a flush head finish.
  • Consumer Electronics: Secures hard-plastic casings and panels without leaving a prominent head above the surface.
  • Manufactured Plastic Parts: Supports repeatable assembly of moulded hard-plastic components with correctly sized pilot holes and countersinks.

3.5mm x 20mm Pozi Countersunk PT45 Screw Dimensions

  • Thread Size: 3.5mm
  • Thread Length: 20mm
  • Head Diameter: 6.30mm
  • Head Height: 1.65mm
  • Drive: PZ1
  • Material: A2 Stainless Steel
  • Head Style: Countersunk

Key Benefits

  • PZ1 Pozi drive provides a widely available drive format for production and maintenance.
  • 45° trilobular PT45 thread form is designed for harder plastics and reinforced materials.
  • PT45 geometry provides a strong drive-to-strip ratio for compatible hard-plastic assemblies.
  • 6.30mm head diameter and 1.65mm head height match the uploaded SKU specification.

Browse the full Pozi Countersunk PT45 Screws for Hard Plastics category for Bright Zinc Plated Steel and A2 Stainless Steel options. You can also use our Screws for Plastic Engineering Guide for PT30/PT45 selection and installation guidance. Technical support is available on 01233 713581.

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Fri 8.30 am - 3.30 pm
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