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Nylon-Insert Locknuts
DIN985
Metric
| M2 | M2.5 | M3 | M4 | M5 | M6 | M7 | M8 | M10 | M12 | M14 | M16 | |
| P/Pitch | 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 |
| S/HEX Width | 3.82-4 | 4.7-5 | 5.3-5.5 | 6.78-7 | 7.78-8 | 9.78-10 | 10.73-11 | 12.73-13 | 16.73-17 | 18.67-19 | 21.67-22 | 23.67-24 |
| e/HEX Across min | 4.32 | 5.45 | 6.01 | 7.66 | 8.79 | 11.05 | 12.12 | 14.38 | 18.9 | 21.1 | 24.49 | 26.75 |
| h/Total Height | 2.75-3 | 3.2-3.8 | 3.7-4 | 4.7-5 | 4.7-5 | 5.7-6 | 7.14-7.5 | 7.64-8 | 9.64-10 | 11.57-12 | 13.3-14 | 15.3-16 |
| m/Nut Height min | 1.9 | 2.3 | 2.4 | 2.9 | 3.2 | 4 | 4.7 | 5.5 | 6.5 | 8 | 9.5 | 10.5 |
| M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | |
| P/Pitch | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 4.5 | 5 |
| S/HEX Width | 26.16-27 | 29.16-30 | 31-32 | 35-36 | 40-41 | 45-46 | 49-50 | 53.8-55 | 58.8-60 | 63.8-65 | 68.1+70 | 73.1-75 |
| e/HEX Across min | 29.56 | 32.95 | 35.03 | 39.55 | 45.2 | 50.85 | 55.37 | 60.79 | 66.44 | 72.09 | 75.95 | 82.6 |
| h/Total Height | 17.66-18.5 | 18.7-20 | 20.7-22 | 22.7-24 | 25.7-27 | 28.7-30 | 31.4-33 | 34.4-36 | 37.4-39 | 40.4-42 | 43.4-45 | 46.4-48 |
| m/Nut Height min | 13 | 14 | 15 | 15 | 17 | 19 | 22 | 25 | 27 | 29 | 32 | 36 |
Product Advantages
Design Excellence with Vibration Locking and Corrosion Defense
Featuring a nylon insert nut integrated precisely within a hexagonal stainless steel nut body, these locknuts offer a compact yet effective locking mechanism against axial loosening. The choice of A4 stainless steel combined with a passivated surface finish provides reliable chemical and environmental resistance. The standardized hex nut design ensures excellent tool compatibility, allowing users to carry out installations or replacements with common spanners or sockets, simplifying project workflows and enhancing modular integration in fastener toolkits.
User-Friendly Performance for Lasting Stability
Offering low maintenance fastening, these nylon-insert locknuts help users by reducing repetitive tightening needs in vibration-prone assemblies. Their corrosion-resistant stainless steel nut body promises durability even with occasional exposure to moisture, while their standardized sizes make them easy to source and replace. This reduces downtime in household or workshop projects, allowing users to enjoy secure, hassle-free performance with every application, whether on light machinery, control panels, or furniture adjustments.
FAQ
What makes your M5 Nylon-Insert Locknuts suitable for corrosive environments?
Our M5 Nylon-Insert Locknuts are made from A4 stainless steel with a passivated finish, providing excellent corrosion resistance. This combination ensures durability in damp or harsh conditions, making them a reliable choice for users needing a sturdy stainless steel nut that stays secure over time.
Can I order a small quantity of your nylon insert locknuts?
Yes, we accept orders starting from a single piece up to bulk quantities like 10,000 pieces. Whether you need just one locknut or a large batch for a project, our flexible ordering options accommodate your needs without minimum order restrictions.
How do I install these M5 Nylon-Insert Locknuts properly?
To install, thread the hex nut onto the M5 bolt until the nylon insert engages. The nylon creates friction that resists loosening under vibration. Using standard tools sized for the locknut’s hex dimensions ensures correct torque and reliable fastening in mechanical assemblies.
Do you provide quality certificates and shipping documents with the products?
We automatically email the certificate of conformity (C of C) and shipping documents with each shipment. If you require additional documentation or have specific quality assurance needs, please contact us directly, and we will gladly assist you promptly.
Shanghai Screwtool is a long-standing OEM supplier who has served US and Europe fastener industry for over 20 years.
If you have regular demands for screws and fasteners, we recommend that you can contact us directly (info@shscrewtool.com) for economic offer and complete service.







