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Quanzhou High Strength Nut
QS Fastener: Quanzhou High Strength Nut
Name: Quanzhou High Strength Nut
Material: A194 2H
Standard: ASTM
Class: 10.0
Surface: PTFE
Size: 5/16 to 4 inch
Feature: High Yield Strength and Durable Strength
Material: A194 2H
Standard: ASTM
Class: 10.0
Surface: PTFE
Size: 5/16 to 4 inch
Feature: High Yield Strength and Durable Strength
Quantity
This High Strength Nut is strictly manufactured in accordance with the ASTM A194 2H standard, with mechanical properties reaching Class 8.0, offering excellent yield strength and long-lasting durability. It covers a full size range from M8 to M100, and the surface is treated with a PTFE coating, ensuring excellent corrosion resistance while providing stable lubrication and locking force. Specifically designed to withstand high pressure, high temperature, and high vibration loads, it is an ideal choice for heavy machinery, steel structures, and pressure vessel connections.
The PTFE-coated nut is a functional fastener made from carbon steel, alloy steel, or stainless steel as the base material, with a polytetrafluoroethylene (PTFE) coating applied to the surface through a spraying process. The base material provides mechanical strength, while the coating imparts special surface properties. As a typical High Strength Nut, it performs particularly well under harsh operating conditions.
🔬 Coating Core Properties and Parameters
| Performance Indicator | Parameter Range | Application |
| Coefficient of Friction | Dynamic approx. 0.05-0.15 | Precise torque control, no need for additional grease during assembly, easy disassembly |
| Operating Temperature | -200°C to +260°C | Suitable for cryogenic and high-temperature conditions, with stable coating performance |
| Corrosion Resistance | Stable within pH 0-14 | Resistant to strong acids, alkalis, and organic solvents, suitable for chemical and marine environments |
| Coating Thickness | 15-25 μm (depending on process) | Does not affect thread fit accuracy while providing effective protection |
| Dielectric Strength | 500-1200 V/mil | Inhibits galvanic corrosion and prevents contact reaction between dissimilar metals |
⚙️ Product Types and Typical Applications
PTFE coating can be used for various standard fasteners, with common examples including:
- A194 2H High Strength Nut: American standard high-strength nut, size range from 5/16 to 4 inches, widely used in petroleum pipelines, chemical plants, and structural connections in construction. This High Strength Nut maintains a stable locking force under high pressure, high temperature, and high vibration environments.
- A194 2H High Strength Nut: American standard high-strength nut, size range from 5/16 to 4 inches, widely used in petroleum pipelines, chemical plants, and structural connections in construction. This High Strength Nut maintains a stable locking force under high pressure, high temperature, and high vibration environments.
The PTFE coating is typically applied using a liquid spraying process followed by high-temperature sintering. The coating is based on polytetrafluoroethylene to enhance wear resistance or temperature resistance, forming a uniform dry film lubrication layer, which fundamentally solves the problems of galling and rusting that are common with metal fasteners. For any scenario requiring long-term, reliable connections, choosing a PTFE-coated High Strength Nut is an ideal solution.
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