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Electro South West Ltd  |  SKU: 6X25P/PLAST30BZP

Polyplast 30 Torx Pan Head Screws for Plastic (6 x 25mm)

Regular price £0.19
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The Polyplast 30 Torx Pan Head Screws (6 x 25mm) are engineered specifically for direct thread-forming in plastic housings and bosses. Featuring a narrow 30° flank angle and an innovative recessed core geometry, these zinc-plated screws drastically reduce radial stress to prevent boss cracking while maximizing material engagement for high pull-out strength.

Click & Collect from our store in Bridgwater, Somerset

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Description

The Specialist Plastic Assembly Screw

Standard screws create severe outward expansion pressure that frequently splits plastic. The Polyplast 30 features a sharp 30° thread flank angle that drastically reduces radial forces during thread engagement. This minimizes hoop stress in the surrounding plastic, giving you the practical advantage of a tight, split-free fit even in thin-walled or lightweight bosses.

Recessed Core for Jam-Free Flow

Forcing displaced material into tight thread pitches often causes friction, jamming, and stripped screw heads. The specialized recessed core geometry acts as a built-in flow director for displaced plastic. It guides the material smoothly to fill the screw's pitch uniformly without jamming, allowing for lower installation torque and smoother driving on manual or automated lines.

Superior Pull-Out and Shear Strength

Weak thread engagement in soft plastic leads to loose components and field failures under vibration. By encouraging a complete, uniform material flow into the thread profile, the Polyplast 30 engages the maximum possible volume of plastic. This creates exceptional shear loads and high pull-out resistance, ensuring internal components and circuit boards remain permanently secured.

Torx Drive Efficiency

Cam-out and rounded screw heads waste time and damage delicate plastic housings during assembly. The Torx pan head drive transfers rotational torque with maximum efficiency, preventing bit slippage, reducing operator fatigue, and allowing for precise torque control when using power drivers.

Key Features

  • Engineered specifically for direct installation into plastics.
  • Sharp 30° flank angle reduces radial forces and prevents boss splitting.
  • Recessed core geometry acts as a flow director to prevent material jamming.
  • Torx drive pan head ensures efficient torque transfer without cam-out.
  • Bright zinc-plated finish offers reliable corrosion resistance.
  • Series 20210 / Type 1452 specification for professional manufacturing.

Specifications

  • Material
    • Steel
  • Finish
    • Bright zinc plated (BZP) steel
  • Colour
    • Silver
  • Suitable for
    • Plastic
  • Sold in
    1 (sold each)

Reviews (0)

What's in the box?

Polyplast 30 Torx Pan Screw 6 x 25mm

Prevents boss cracking.

30° flank angle minimizes radial stress to prevent splitting thin-walled plastic bosses.

Higher pull-out strength.

Recessed core optimizes material flow to maximize shear load and thread engagement.

Frequently Asked Questions

Why is a 30° flank angle better than a standard 60° angle for plastic?

Standard screws typically have a 60° flank angle, which acts like a wedge, pushing outwards against the plastic walls and causing boss cracking. The narrower 30° flank angle penetrates the plastic with far less outward radial force, allowing for thinner boss walls without splitting.

Does this screw require a pre-tapped thread in the plastic boss?

No. The Polyplast 30 is a thread-forming fastener designed to form its own precise female thread as it is driven into a plain molded pilot hole, saving time and eliminating extra tapping steps during production.

What does the recessed core geometry do?

As the screw forms threads, displaced plastic has to go somewhere. The recessed core provides a guided channel that directs plastic smoothly into the screw's pitch rather than packing it tight, preventing thread jamming and ensuring maximum material contact.

Shipping

What countries do you ship to?

We currently only ship to the UK. To enquire about shipping to a different destination, please contact us.

How long will it take to receive my order?

Shipping normally takes 1 - 2 days. Orders placed before 2:00pm will be shipped same day. Orders placed after 2:00pm on Fridays will be shipped the following Monday.