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Socket Set Screw

ANSI, JIS, DIN, ISO
A complete range of plastic screws, bolts, nuts, sizes from M1.4 to M16.
Complete styles of screw heads are available for various equipment design requirements.
 

Socket Set Screw｜Engineering Plastic Material Selection Guide

Material selection: multiple options are available based on different environments and temperature requirements.

As a professional engineering plastic screw manufacturer and supplier, Link Upon provides a wide range of high-performance engineering plastic screws and custom parts to help maintain stable fastening and long-term durability in demanding environments.

High-Temperature Plastic Screws Chemical / Acid-Alkali Resistance Semiconductor & Precision Equipment Manufacturer / Supplier

Advantages & Typical Applications of Socket Set Screws

Socket set screws are often used for headless fastening / positioning where stable fixing is required under chemical environments or electrical insulation conditions. Compared with metal fasteners, engineering plastic set screws can provide:

  • Corrosion resistance, acid/alkali resistance, and chemical resistance
  • (for chemical equipment and wet-process systems).
  • Electrical insulation and low thermal conductivity
  • (for electrical/electronic modules, control boxes, and sensor mounting).
  • Lightweight and metal-ion control
  • (for semiconductors, precision equipment, and special processes).
  • Self-lubrication, low wear, or low-particle requirements
  • (depending on material selection such as self-lubricating TPI, PTFE, PFA).

By selecting different engineering plastics, you can choose the best solution for socket set screws based on operating temperature range, chemical environment, mechanical load, and cleanliness requirements.

Common Selection Scenarios: High Temperature, Chemical Resistance, Self-Lubrication & Lightweight

Plastic Screws for High-Temperature Environments

If equipment operates long-term at approximately 150–260°C with thermal cycling conditions, prioritize high-temperature engineering plastics such as PEEK, PEEK+GF, PPS, PPS+GF, self-lubricating TPI, PTFE, and PFA.

Chemical Resistance & Materials for Semiconductor Wet Processes

For acids/alkalis, oxidizers, organic solvents, or semiconductor wet process chemicals, consider PVDF, PTFE, PFA, PCTFE, and selected grades of PEEK / PPS to balance chemical resistance and structural strength.

Self-Lubrication, Low Friction & Lightweight

When reducing wear, particles, or avoiding additional lubrication is required, self-lubricating TPI, PTFE, and selected engineering plastics provide good self-lubrication and low-friction performance while maintaining lightweight advantages.

※ The “long-term service temperature” below is a general reference range for design and material selection. Actual performance must be evaluated based on geometry, load conditions, chemical media, and environment.

Engineering Plastic Material Selection Guide｜Temperature Range & Application Overview

Material selection: multiple options are available based on different environments and temperature requirements.

PEEK ｜Long-term Service Temp. 240°C

PEEK is a semi-crystalline engineering plastic with toughness, rigidity, creep resistance, light resistance, and resistance to various radiation; suitable for high-temperature and chemical solvent process applications.

PEEK screws, nuts, and various parts are widely used in semiconductor equipment, aerospace industry, automotive electronics and electrical industries, oil/natural gas extraction equipment, medical devices, and food processing equipment.

PPS ｜Long-term Service Temp. 200°C

PPS is a special thermoplastic engineering plastic featuring high heat resistance, corrosion resistance, and high mechanical performance, with electrical performance and dimensional stability; suitable for electronic/electrical parts, automotive parts, and chemical machinery components.

PVDF ｜Long-term Service Temp. 150°C

PVDF is a thermoplastic fluoropolymer with excellent chemical resistance, weather resistance, heat resistance, electrical insulation, and lubricity/wear resistance; suitable for acid/alkali solvent environments, semiconductor processes, wet processes, and industrial equipment parts in the chemical industry.

PP ｜Long-term Service Temp. 90°C

PP provides excellent tensile properties, chemical resistance, hydrolysis resistance, and electrical performance; suitable for chemical solvent environments, food machinery, and pharmaceutical machinery parts.

PPGF ｜Long-term Service Temp. 120°C

PPGF is PP reinforced with glass fiber to increase strength. It features excellent chemical resistance, high purity, low water absorption, good electrical insulation performance, and improved heat resistance.

PPS+GF ｜Long-term Service Temp. 240°C

PPS reinforced with glass fiber improves strength and heat resistance. It does not deteriorate under long-term high-temperature use and provides corrosion resistance, high mechanical performance, electrical performance, and dimensional stability; suitable for electronic/electrical parts, automotive parts, and chemical machinery components.

RENY ｜Long-term Service Temp. 105°C

A heat-resistant nylon engineering plastic reinforced with glass fiber. It features excellent oil resistance and heat resistance, and is widely used in automotive, machinery, precision mechanical parts, electrical and electronic equipment parts, civil engineering, and building materials.

PVC ｜Long-term Service Temp. 60°C

PVC offers acid/alkali resistance, excellent electrical insulation, good mechanical strength, and good weather resistance; commonly used for machine components that contact chemical solvent processes, or outdoor equipment parts such as building materials, packaging, medical products, wires, and cables.

Self-lubricating TPI ｜Long-term Service Temp. -269~280°C

TPI provides excellent heat resistance, excellent wear resistance and friction performance under high pressure and high-speed scraping, low gas release performance under high vacuum, excellent chemical resistance and mechanical properties, outstanding dimensional stability, and low conductivity.

PTFE ｜Long-term Service Temp. -190~260°C

PTFE is a fluoropolymer resin resistant to most chemicals and solvents. Due to excellent electrical properties, non-stick characteristics, and lubricity, it is widely used in high-temperature, chemical, electrical, mechanical, and aerospace fields.

PCTFE (Long-term Service Temp. -200~200°C) :

PCTFE is a fluoropolymer with cold resistance, heat resistance, chemical resistance, low permeability, and weather resistance; widely used for semiconductor process equipment parts.

PEEK+GF ｜Long-term Service Temp. 260°C

Glass-fiber reinforced PEEK enhances rigidity and improves heat resistance, with high-temperature resistance up to 260°C; suitable for heat resistance, chemical resistance, and flame retardancy (V-0).

PFA ｜Long-term Service Temp. 260°C

PFA offers low/high temperature resistance (-200°C~260°C), chemical resistance, weather resistance, and excellent mechanical strength; widely used in pharmaceutical equipment or semiconductor wet process equipment related parts.

NYLON ｜Long-term Service Temp. 70°C

NYLON has heat resistance, high strength and hardness, wear resistance, and a low coefficient of friction; suitable for mechanical engineering, food technology, electronics, aerospace technology, and automotive industrial equipment.

Want to learn more about plastic screw sizes/specs, or need engineering plastic screw manufacturing & supply advice?

Contact Link Upon 

Socket Set Screw Metric Specification

The table below lists standard metric socket set screw sizes in millimetres (mm). For special lengths or customised specifications, please contact us.

SPEC. Length (mm)
M3 4
5
M4 6
8
M5 6
8
10
20
M6 4
5
6
8
10
12

Socket Set Screw British Specification (UNC)

The table below lists commonly used British (UNC) thread size and standard length (inch). For other thread pitches or customised dimensions, please contact us.

SPEC. Length
1/4-20UNC 3/8"
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