Stainless Steel Dome Nut Nylon Insert A2 DIN 986 Hex Polyamide Acorn Prevailing Torque Type Hexagon Domed Cap Nuts 304

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Description

The stainless steel dome nut nylon insert with a nylon insert are prevailing torque fasteners designed to provide secure locking, vibration resistance, and corrosion protection. Made from A2-70 (304 stainless steel), these hexagon domed cap nuts feature a polyamide (nylon) insert, ensuring they remain firmly in place without the need for additional locking mechanisms. Ever Hardware provides custom made fasteners and customizable packaging.

1. Reliable Self-Locking Mechanism
• The nylon insert increases friction on the bolt threads, preventing the nut from loosening due to vibration, rotation, or shock loads.
• Eliminates the need for additional locking washers or adhesives, reducing assembly time and costs.
• Ideal for dynamic and high-vibration environments, such as automotive, machinery, and industrial equipment.

2. Corrosion and Rust Resistance
• Made from 304 stainless steel (A2-70), these nuts offer excellent resistance to moisture, oxidation, and mild chemicals.
• Suitable for outdoor, marine, food-grade, and industrial applications where exposure to humidity, salt, and chemicals is common.

3. Protective Domed Cap Design
• The smooth, rounded cap covers the exposed bolt end, preventing damage to surrounding components, skin, or fabric.
• Enhances safety by eliminating sharp thread exposure, making it ideal for decorative and furniture applications.
• Provides a clean, finished look for architectural, automotive, and industrial assemblies.

4. Vibration and Shock Absorption
• The nylon insert acts as a cushion, absorbing vibrations and mechanical shocks, ensuring a stable and long-lasting connection.
• Commonly used in motorcycles, bicycles, railway systems, and heavy machinery.

5. High Strength and Durability
• The A2-70 stainless steel composition provides high tensile strength and durability, making these nuts suitable for load-bearing and mechanical fastening applications.
• Withstands moderate mechanical stress while maintaining a secure fit over time.

6. Prevents Thread Damage and Galling
• The nylon insert reduces direct metal-to-metal contact, minimizing the risk of thread galling and seizing, which is common in stainless steel fasteners.
• Ensures smooth and easy disassembly, even after long-term use.

7. Ideal for Various Applications
• Suitable for automotive, construction, furniture, sports equipment, and marine applications.
• Frequently used in safety enclosures, electrical panels, and machine guards due to its protective dome shape.

8. Compliance with DIN 986 Standards
• Manufactured to DIN 986 specifications, ensuring standardized dimensions and compatibility with metric bolts.

Conclusion

Stainless steel dome nut nylon insert DIN 986 (A2-70, 304) offer a secure, corrosion-resistant, and vibration-proof fastening solution. Their self-locking design, protective domed cap, and durable stainless steel construction make them ideal for industrial, automotive, marine, and architectural applications, providing long-lasting reliability and safety.

 

Thread Size M4 M5 M6 M8 M10 M12 M14 M16 M20
Hex A/F 7.0 8.0 10.0 13.0 16.0 18.0 21.0 24.0 30.0
Hex Height Min 2.9 4.4 4.9 6.44 8.04 10.37 12.1 14.1 16.9
Metal Part Height 5.6 6.0 7.5 8.9 10.5 13.5 15.5 16.5 21
Total Height 9.6 10.5 12.0 14.0 18.1 22.5 26.4 27.5 35.0

 

Size M4-M12
Standard DIN 986 Coarse Thread
Dome Type Metal Dome
Insert Nylon Insert
Material Stainless Steel A2/304
Color Silver/Natural

 

Stainless Steel Dome Nut Nylon Insert A2 DIN 986 Hex Polyamide Acorn Prevailing Torque Type Hexagon Domed Cap Nuts 304

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