PTFE Coated Fasteners – Corrosion Resistant Bolts, Nuts & Studs from China Manufacturer
Kaxite Sealing is a leading PTFE coated fasteners manufacturer and supplier in China, offering high-performance fluoropolymer-coated bolts, nuts, studs, and threaded rods for demanding industrial applications. Our PTFE coated fasteners feature a durable polytetrafluoroethylene (PTFE) coating that provides exceptional corrosion resistance, ultra-low coefficient of friction, consistent tensioning performance, and ease of installation and removal. As a trusted China PTFE coated fasteners factory, we provide factory-direct pricing, ISO 9001 certified quality, and fast global delivery to clients in oil & gas, chemical processing, marine, and power generation industries. Explore our full product range or request a custom quote from our China sales team.
Why PTFE Coated Fasteners? PTFE (Polytetrafluoroethylene) coating offers the lowest coefficient of friction of any solid material, excellent chemical stability, high temperature resistance up to 260°C (500°F), and superior anti-galling properties. Our PTFE coated studs, bolts, and nuts are the preferred choice for critical bolting applications where consistent torque and corrosion protection are essential.
What Are PTFE Coated Fasteners?
PTFE coated fasteners are industrial-grade bolts, nuts, studs, and threaded rods that have been coated with a thin layer of Polytetrafluoroethylene (PTFE) – typically about 1 mil (25 microns) thick. This fluoropolymer coating creates a non-stick, low-friction surface that dramatically reduces galling and seizing during installation and removal, while providing outstanding corrosion resistance in harsh environments. At Kaxite, our PTFE coated bolts and nuts are manufactured to exacting standards, with the coating applied through a controlled spray or dip process followed by thermal curing to ensure uniform coverage and superior adhesion. Common applications include B7 studs with 2H nuts, structural bolting, and critical fastening systems in corrosive atmospheres where traditional zinc or cadmium plating falls short. View all PTFE products from Kaxite.
Key Features & Benefits
- Exceptional Corrosion Resistance – PTFE coating provides outstanding protection against salt water, chemicals, acids, and atmospheric corrosion, outlasting traditional zinc or cadmium plating.
- Ultra-Low Coefficient of Friction – The lowest friction of any solid material ensures consistent torque-tension relationships and eliminates galling and seizing.
- High Temperature Tolerance – Withstands continuous operating temperatures up to 260°C (500°F), making it suitable for high-heat applications.
- Consistent Tensioning Performance – Achieve accurate and repeatable bolt preload with minimal scatter, improving joint integrity and safety.
- Easy Installation and Removal – Non-stick surface prevents thread galling and reduces the risk of seized bolts, simplifying maintenance and reducing downtime.
- Chemical Stability – Resistant to most acids, bases, solvents, and hydrocarbons, ensuring long service life in aggressive chemical environments.
- Thin Coating Profile – Approximately 1 mil thickness maintains critical thread dimensions and ensures proper fit with standard nuts and taps.
- Extended Service Life – The durable coating dramatically extends fastener life, reducing replacement costs and maintenance intervals.
PTFE Coated Fasteners Specifications
| Parameter | Specification | Range / Options | Test Standard |
|---|---|---|---|
| Coating Material | PTFE (Polytetrafluoroethylene) | Fluoropolymer / PTFE with additives | Internal |
| Coating Thickness | 1 mil (25 microns) | 0.8 – 1.5 mils | ASTM D4138 |
| Maximum Service Temperature | 260°C (500°F) | Continuous operation | ASTM D648 |
| Coefficient of Friction | 0.05 – 0.10 | Lowest of any solid material | ASTM D1894 |
| Salt Spray Resistance | 1000+ hours | No red rust | ASTM B117 |
| Substrate Materials | Alloy steel (B7, L7), Stainless Steel | Custom grades available | ASTM A193 |
| Product Types | Studs, Bolts, Nuts, Threaded Rods | Custom sizes and lengths | ASME B18.2.1 |
Custom sizes and substrate materials available. Our PTFE coated fasteners can be manufactured to your specific dimensions, grades, and coating requirements. Contact us for a tailored quotation based on your application needs.
Applications of PTFE Coated Fasteners
- Oil & Gas Industry – Offshore platforms, subsea equipment, pipelines, and refinery bolting where corrosion resistance is critical.
- Chemical Processing – Flange bolting, reactor closures, pressure vessel fasteners, and pump assemblies handling corrosive media.
- Power Generation – Turbine casings, boiler access doors, steam line flanges, and nuclear plant fastening systems.
- Marine & Offshore – Ship hulls, deck equipment, propeller shafts, and seawater-exposed bolting applications.
- Pharmaceutical & Food Processing – Sanitary fittings, cleanroom equipment, and FDA-compliant fastening systems.
- Aerospace & Defense – Aircraft structural bolting, engine mounting, and critical fastening systems requiring lightweight, corrosion-resistant solutions.
- Water & Wastewater Treatment – Pipe flanges, pump connections, and equipment bolting in corrosive water treatment environments.
Proven Performance: Extensive testing and field use have demonstrated that PTFE coated fasteners significantly outperform traditional hot-dip galvanized, cadmium, or zinc-plated fasteners in corrosive atmospheres. The future of bolting technology lies with fluoropolymer coatings – and Kaxite is at the forefront of this technology in China.
Why Source PTFE Coated Fasteners from a China Manufacturer?
Choosing a reliable China PTFE coated fasteners supplier like Kaxite gives you access to competitive factory prices, flexible production capacity, and fast shipment. Our ISO 9001-certified plant ensures consistent quality control, and our experienced R&D team supports custom coating formulations and substrate materials. We export to over 40 countries and offer free samples for testing before bulk orders. Request a quote and see why international clients trust Kaxite for their coated fastener needs. Our PTFE coated bolts and nuts are available in a wide range of sizes, grades, and coatings to meet your specific requirements.
Frequently Asked Questions About PTFE Coated Fasteners
What is PTFE coating and how does it benefit fasteners?
PTFE (Polytetrafluoroethylene) coating is a fluoropolymer layer applied to fasteners to provide a non-stick, low-friction surface. Benefits include exceptional corrosion resistance, elimination of galling and seizing, consistent torque-tension performance, and easy installation and removal. PTFE coated fasteners are ideal for applications where traditional coatings like zinc or cadmium plating fail to provide adequate protection.
Can I buy PTFE coated fasteners directly from a China factory?
Yes, Kaxite Sealing is a direct China PTFE coated fasteners manufacturer, offering factory-direct pricing with competitive minimum order quantities. Submit your inquiry and we will provide a detailed quote within 24 hours, including coating specifications and delivery options.
What substrate materials can be PTFE coated?
We can apply PTFE coating to various substrate materials including alloy steel (A193 B7, B7M, L7, L7M), stainless steel (304, 316, 316L), and custom grades upon request. The substrate selection depends on your specific application requirements and operating environment.
What is the maximum temperature for PTFE coated fasteners?
PTFE coated fasteners can withstand continuous operating temperatures up to 260°C (500°F). For applications requiring higher temperature resistance, alternative fluoropolymer coatings may be recommended. Consult our technical team for your specific temperature requirements.
What types of PTFE coated fasteners do you manufacture?
We manufacture a complete range of PTFE coated fasteners including studs, bolts, nuts, threaded rods, washers, and custom fastening solutions. Our most popular products are PTFE coated B7 studs with 2H nuts, widely used in the oil and gas and chemical processing industries.
What is the typical lead time for PTFE coated fasteners from China?
Standard sizes and grades are typically in stock and ship within 3–5 working days. Custom orders require 7–15 working days depending on substrate availability, coating specifications, and quantity. Express shipping and sea freight options are available to destinations worldwide.
Ready to buy high-quality PTFE coated fasteners from a trusted China supplier? Request a free quote today – our technical sales team will respond within 24 hours with pricing, material recommendations, coating specifications, and delivery options. Partner with Kaxite Sealing for reliable PTFE coated bolting solutions at competitive factory prices.
- View as
PTFE Coated Studs, Bolts and Nuts
PTFE coated studs, bolts and nuts for petrochemical, water works and general industrial flanges. B7 studs with 2H nuts the most common combination. PTFE coating up to +260 °C, salt spray 3,000 h (ASTM B117), kinetic friction coefficient 0.06–0.08, coating thickness 20–45 μm. Custom sizes and grades available. Reply within 2 business hours.
Kaxite is a leading China PTFE Coated Fasteners manufacturer, supplier and exporter. Adhering to the pursuit of perfect quality of products, so that our PTFE Coated Fasteners have been satisfied by many customers. Extreme design, quality raw materials, high performance and competitive price are what every customer wants, and that's also what we can offer you. Of course, also essential is our perfect after-sales service. If you are interested in our PTFE Coated Fasteners services, you can consult us now, we will reply to you in time!
