---
title: "What Are PEEK Engineering Plastic Micro Countersunk Screws Used For?"
description: "PEEK Engineering Plastic Micro Countersunk Screws (Trade series (PEEK micro screws)) are used for providing a miniature nonconductive countersunk joint with…"
url: https://engineeringhardware.com/applications/peek-engineering-plastic-micro-countersunk-screws/
source: Engineering Hardware & Fasteners
---

# What Are PEEK Engineering Plastic Micro Countersunk Screws Used For?

Screws · Trade series (PEEK micro screws) · Application guide

Typical applications, the industries that specify peek engineering plastic micro countersunk screws, and how to choose the right size, material and finish for the joint.

PEEK Engineering Plastic Micro Countersunk Screws are used for providing a miniature nonconductive countersunk joint with the plastic break limits kept visible. They are manufactured to Trade series (PEEK micro screws), and the choice of size, property class and finish is driven by the load in the joint and the environment it sits in.

- **Primary duty:** Providing a miniature nonconductive countersunk joint with the plastic break limits kept visible
- **Governing standard:** Trade series (PEEK micro screws)
- **Thread size range:** M1.2 to M1.6
- **Category:** Screws

Application notes are general engineering guidance. Verify the property class and any approval requirement against your own design calculation.

![What Are PEEK Engineering Plastic Micro Countersunk Screws Used For? application image](https://engineeringhardware.com/wp-content/uploads/2026/09/PEEK-RENY-Plastic-Micro-Countersunk-Screws.webp)

PEEK Engineering Plastic Micro Countersunk Screws (Trade series (PEEK micro screws)) are specified where the joint requires providing a miniature nonconductive countersunk joint with the plastic break limits kept visible. The sections below cover the typical end-uses by industry, the size and material decisions for each, assembly practice, and the applications this fastener type is not suited to. Stocked across roughly M1.2 to M1.6, they cover light-duty and instrument-scale work.

## Typical Applications for PEEK Engineering Plastic Micro Countersunk Screws

The most common settings where these are specified:

- **Insulated electronics:** Engineering-plastic screws provide a nonconductive threaded joint in a compact package.
- **Vacuum and analytical equipment:** Low-outgassing plastic is used around sensitive instruments.
- **Chemical equipment:** PEEK resists service environments where ordinary metal hardware may be unsuitable.
- **Prototype assemblies:** Countersunk plastic screws avoid a metal head near the component.

Product catalog

## Related Plastic Micro Screws products

[![M6X30 Brass Slotted Countersunk Csk Flat Head Machine Screw DIN963](https://img.engineeringhardware.com/M6X30-Brass-Slotted-Countersunk-Csk-Flat-Head-Machine-Screw-DIN963.webp)](https://engineeringhardware.com/product/m6x30-brass-slotted-countersunk-csk-flat-head-machine-screw-din963/)

Countersunk & Flat-Head Machine Screws

### [M6X30 Brass Slotted Countersunk Csk Flat Head Machine Screw DIN963](https://engineeringhardware.com/product/m6x30-brass-slotted-countersunk-csk-flat-head-machine-screw-din963/)

Countersunk Head · DIN, GB, ANSI, BSW

**US$0.0122 – 0.10**MOQ 50,000 pieces

[![PT Double Countersunk Blind Rivet](https://img.engineeringhardware.com/PT-Double-Countersunk-Blind-Rivet.webp)](https://engineeringhardware.com/product/pt-double-countersunk-blind-rivet/)

Countersunk & Flat-Head Machine Screws

### [PT Double Countersunk Blind Rivet](https://engineeringhardware.com/product/pt-double-countersunk-blind-rivet/)

Steel · Countersunk Head

**US$0.012**MOQ 500 pieces

[![Wholesale Price Stainless Steel Carbon Steel Color Zinc-Plated Cross Recessed Countersunk Head Machine Screw](https://img.engineeringhardware.com/Wholesale-Price-Stainless-Steel-Carbon-Steel-Color-Zinc-Plated-Cross-Recessed-Countersunk-Head-Machine-Screw.webp)](https://engineeringhardware.com/product/wholesale-price-stainless-steel-carbon-steel-color-zinc-plated-cross-recessed/)

Countersunk & Flat-Head Machine Screws

### [Wholesale Price Stainless Steel Carbon Steel Color Zinc-Plated Cross Recessed Countersunk Head Machine Screw](https://engineeringhardware.com/product/wholesale-price-stainless-steel-carbon-steel-color-zinc-plated-cross-recessed/)

Countersunk Head · DIN, GB, ANSI, BSW, JIS, GOST

**US$0.012 – 0.12**MOQ 1,000 pieces

[![Hexalobular Socket Countersunk Head Ribbed Double Teeth Cut Tail Nail](https://img.engineeringhardware.com/Hexalobular-Socket-Countersunk-Head-Ribbed-Double-Teeth-Cut-Tail-Nail.webp)](https://engineeringhardware.com/product/hexalobular-socket-countersunk-head-ribbed-double-teeth-cut-tail-nail/)

Countersunk & Flat-Head Machine Screws

### [Hexalobular Socket Countersunk Head Ribbed Double Teeth Cut Tail Nail](https://engineeringhardware.com/product/hexalobular-socket-countersunk-head-ribbed-double-teeth-cut-tail-nail/)

Common Nail · DIN, GB

**US$0.0516 – 0.06**MOQ 10,000 pieces

[![Premium High-Strength Stainless Steel Countersunk Screws for Furniture Assembly](https://img.engineeringhardware.com/Premium-High-Strength-Stainless-Steel-Countersunk-Screws-for-Furniture-Assembly.webp)](https://engineeringhardware.com/product/premium-high-strength-stainless-steel-countersunk-screws-for-furniture-assembly/)

Countersunk & Flat-Head Machine Screws

### [Premium High-Strength Stainless Steel Countersunk Screws for Furniture Assembly](https://engineeringhardware.com/product/premium-high-strength-stainless-steel-countersunk-screws-for-furniture-assembly/)

Countersunk Head · DIN, GB, ANSI, BSW

**US$0.012**MOQ 100 pieces

[![Factory Sells Stainless Steel Blind Rivets Open Dome Head Countersunk Head Rivets Pop Blind Rivets](https://img.engineeringhardware.com/Factory-Sells-Stainless-Steel-Blind-Rivets-Open-Dome-Head-Countersunk-Head-Rivets-Pop-Blind-Rivets.webp)](https://engineeringhardware.com/product/factory-sells-stainless-steel-blind-rivets-open-dome-head-countersunk-head-rivets/)

Countersunk & Flat-Head Machine Screws

### [Factory Sells Stainless Steel Blind Rivets Open Dome Head Countersunk Head Rivets Pop Blind Rivets](https://engineeringhardware.com/product/factory-sells-stainless-steel-blind-rivets-open-dome-head-countersunk-head-rivets/)

Open Type · DIN / GB / JIS / ISO / IFI / BS / ASTM

**US$0.012 – 0.036**MOQ 100,000 pieces

[View all Countersunk & Flat-Head Machine Screws →](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) [Full product catalog](https://engineeringhardware.com/products/)

## How to Specify PEEK Engineering Plastic Micro Countersunk Screws for Your Application

- **Size:** Match the nominal size to the mating thread or hole. This product spans M1.2–M1.6; check the full table below for the exact dimensions of each size.
- **Drive & head:** Pick the drive (socket, cross, slot) and head style for the tool access and seating surface; a recessed drive resists cam-out under power tools.
- **Environment:** For damp, coastal or chemical exposure prefer A4/316 stainless or a suitable coating; indoors, plated steel or A2 is usually sufficient.
- **Standard:** This product is supplied to Trade series (PEEK micro screws). Quoting the standard on your order guarantees interchangeable dimensions between suppliers.

## Installation & Assembly Practice

- Match the driver exactly to the recess (PH ≠ PZ; hex key sizes per ISO 2936) and keep the tool axial — side load is the main cause of stripped drives.
- In tapped holes, engage a thread length of at least 1× the nominal diameter in steel, 2× in aluminum.
- Set power tools to a torque that seats the head without embedding it into the mating surface.

## Common Selection Mistakes with PEEK Engineering Plastic Micro Countersunk Screws

- Under-sizing the drive for the installation torque — a small recess at high torque strips before the screw is seated.
- Using a countersunk head in thin sheet where the countersink removes most of the load-bearing material.
- Specifying stainless in high-strength duty: A2-70 is roughly class 7 steel, not a 10.9 substitute.

## Where PEEK Engineering Plastic Micro Countersunk Screws Are Not the Right Choice

Not for high-preload structural joints (use a property-class bolt and nut), and not in thin sheet where a self-drilling or self-tapping type suits better.

Custom manufacturing · Made to drawing

## Need a PEEK engineering plastic micro countersunk screws outside the standard range?

Thread size and pitch, length, property class, drive form, head geometry and head marking are all specifiable — the standard part is where it starts, not where it stops. Made by cold heading or warm forging.

Minimum order from 2,000 pieces; samples within 7 days of drawing approval.

[Custom screw manufacturing](https://engineeringhardware.com/custom/screws/)[Send a drawing](https://engineeringhardware.com/custom/screws/#rfq)

## Technical Drawing

Dimensioned line drawing of M1.2 PEEK Engineering Plastic Micro Countersunk Screws to Trade series (PEEK micro screws). Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected.

- **Example length (mm):** 2.5
- **Head diameter (mm):** 2.3
- **Drive:** cross recess No. 0
- **Material:** PEEK engineering plastic
- **Example tensile break load (N):** 58
- **Example torsional break torque (Nu00b7m):** 0.03

## Dimensions & Specifications (Trade series (PEEK micro screws))

| Thread size | Example length (mm) | Head diameter (mm) | Drive | Material | Example tensile break load (N) | Example torsional break torque (Nu00b7m) |
| --- | --- | --- | --- | --- | --- | --- |
| M1.2 | 2.5 | 2.3 | cross recess No. 0 | PEEK engineering plastic | 58 | 0.03 |
| M1.4 |  | 2.3 | cross recess No. 0 | PEEK engineering plastic |  |  |
| M1.6 |  | 2.3 | cross recess No. 0 | PEEK engineering plastic |  |  |

Inside the plant

## Manufactured in our own plant

This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.

1. ![Wire rod feeding into a cold heading machine](https://engineeringhardware.com/wp-content/uploads/2026/08/09-wire-rod-feed-cold-heading-machine.webp) 01 **Cold heading** Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail. Head dimensions and under-head radius checked at set-up and per shift.
2. ![Thread rolling machine producing bolt threads](https://engineeringhardware.com/wp-content/uploads/2026/08/03-thread-rolling-machine-bolt-production.webp) 02 **Thread rolling** Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch. Go / no-go ring gauges to ISO 965 tolerance class 6g.
3. ![Baskets of bolts staged for heat treatment](https://engineeringhardware.com/wp-content/uploads/2026/08/05-heat-treatment-baskets-black-bolts.webp) 03 **Heat treatment** Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it. Core hardness and tensile tested per lot to ISO 898-1.
4. ![Zinc plated bolts in a treatment basket](https://engineeringhardware.com/wp-content/uploads/2026/08/23-zinc-plated-bolts-treatment-basket.webp) 04 **Surface treatment** Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list. Coating thickness and neutral salt spray hours to ISO 9227.

## Frequently Asked Questions

### Which industries use PEEK Engineering Plastic Micro Countersunk Screws?

They are commonly specified in prototype assemblies, insulated electronics and vacuum and analytical equipment, among other sectors.

### How do I choose the right size of PEEK Engineering Plastic Micro Countersunk Screws?

Match the nominal size to the mating thread or hole. This product is available from M1.2 to M1.6; the full dimension table on this page lists each size.

### What drive type do PEEK Engineering Plastic Micro Countersunk Screws use?

Drive depends on the head style — socket (hex key), cross (Phillips/Pozi) or slot. A recessed drive resists cam-out when driven with power tools; check the product head style on this page.

### What material should PEEK Engineering Plastic Micro Countersunk Screws be for outdoor use?

For damp, coastal or chemical environments specify A4 (316) stainless or a suitably coated steel. For indoor or dry use, A2 (304) stainless or zinc-plated steel is normally adequate.

### Can I get a quote for PEEK Engineering Plastic Micro Countersunk Screws in the size and material I need?

Yes. Use the technical drawing and quote form on this page to set the size and options, then send the exact configuration to our team for pricing and lead time.

## Related Pages

Product page: [PEEK Engineering Plastic Micro Countersunk Screws — specifications & sizes](https://engineeringhardware.com/fastener/peek-engineering-plastic-micro-countersunk-screws/)

### PEEK Engineering Plastic Micro Countersunk Screws Specification Guides

### Related Fastener Applications