Do you provide custom sizing manufacturing and bulk supply for Super Low-Head (Low Profile) Hex Bolts?

Yes. As a professional manufacturer and supplier, Link Upon provides precision production for Super Low-Head (Low Profile) Hex Bolts made from high-performance engineering plastics (such as PEEK, PPS, and PVDF), and supports B2B bulk orders and custom specification consultation for global industrial customers.

How do I choose the right engineering plastic fastener material for an industrial environment?

We recommend materials based on long-term operating temperature and chemical media. For example, semiconductor wet processes can evaluate PVDF, PTFE, and PFA for chemical compatibility, while high-temperature or higher-load scenarios can prioritize PEEK, PPS+GF, and PEEK+GF, supported by an experienced manufacturing team.

Super Low-Head (Low Profile) Hex Bolt

Super Low-Head (Low Profile) Hex Bolt, made of PEEK, PVDF, or other engineering plastic materials; super low-head design is particularly suitable for equipment assembly with limited mechanical space.

AMOUNT*

Super Low-Head (Low Profile) Hex Bolt｜Material Selection Guide

When selecting ultra-low profile hexagon head plastic screws, choosing the appropriate engineering plastic material based on operating temperature, chemical exposure, and equipment conditions is critical. Proper material selection significantly extends service life, enhances corrosion resistance, and ensures long-term fastening reliability in demanding industrial environments.

As a professional manufacturer and supplier of engineering plastic fasteners, Link Upon Advanced Material Corp. offers a wide range of high-performance plastic screws and customised precision components. We help customers maintain stable fastening performance and long-term durability, even under harsh operating conditions.

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

Advantages & Typical Applications

Super Low-Head (Low Profile) Hex Bolts are designed for height-restricted assemblies. They are suitable for stable fastening under chemical environments or electrical insulation requirements. Compared with metal fasteners, engineering plastic fasteners 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).
Low head interference for compact structures
(for space-limited and low-profile mechanism designs).

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

Common Selection Scenarios

High-Temperature Applications

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

Chemical Resistance & 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. 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.

Super Low-Head (Low Profile) Hex Bolt Metric Specification (Diameter × Length, mm)

The table below lists standard metric sizes for super low-head (low profile) hex bolts, measured in millimetres (diameter × length). For special lengths, materials or customised specifications, please contact us.

SPEC.	SPEC.
6×4	6×22
6×5	6×25
6×6	6×27.5
6×8	6×30
6×10	6×35
6×12	6×40
6×15	6×45
6×16	6×50
6×18	6×55
6×20

SPEC.

6×4

6×22

6×5

6×25

6×6

6×27.5

6×8

6×30

6×10

6×35

6×12

6×40

6×15

6×45

6×16

6×50

6×18

6×55

6×20