Fine-Thread Nylon Insert Hex Lock Nuts are selected when an assembly calls for a regular-height nylon insert lock nut on a fine-pitch thread. This application guide to the ISO 10512 type covers concrete end-uses, the specification checklist, correct installation, and where an alternative fastener performs better. Stocked across roughly M8 to M36, they cover general to heavy-duty work.
Typical Applications for Fine-Thread Nylon Insert Hex Lock Nuts
The most common settings where these are specified:
- Automotive: fine-thread suspension and steering hardware.
- Aerospace ground equipment: locking nuts that must be reused sparingly.
- Hydraulics: fine-thread fittings subject to vibration.
- Machinery: adjusters with fine-pitch threads.
How to Specify Fine-Thread Nylon Insert Hex Lock Nuts for Your Application
- Size: Match the nominal size to the mating thread or hole. This product spans M8–M36; check the full table below for the exact dimensions of each size.
- Locking & grade: Match the strength grade to the bolt, and choose a locking style (nyloc, all-metal, serrated flange) if the joint sees vibration.
- Environment: For damp, coastal or chemical exposure prefer A4/316 stainless or a suitable coating; indoors, plated steel or A2 is usually sufficient.
- Standard: This product is supplied to ISO 10512. Quoting the standard on your order guarantees interchangeable dimensions between suppliers.
Installation & Assembly Practice
- Run the nut down by hand before applying the wrench to catch cross-threading early.
- Tighten the nut rather than the bolt head where access allows — the torque-to-preload relation is more consistent.
- For locking styles, note that nyloc inserts are single-use in critical joints and lose grip above roughly 120 °C.
Common Selection Mistakes with Fine-Thread Nylon Insert Hex Lock Nuts
- Pairing a high-class bolt with a lower-class nut — the nut strips before the bolt reaches proof load; the nut class must meet or exceed the bolt class.
- Using a plain nut with a spring washer in severe vibration instead of a prevailing-torque locking nut.
- Re-using nyloc nuts in critical joints.
Where Fine-Thread Nylon Insert Hex Lock Nuts Are Not the Right Choice
Not on their own — they need a matching bolt or stud — and a plain nut is not a substitute for a locking type under heavy vibration.
Custom manufacturing · Made to drawing
Need a fine-thread nylon insert hex lock nuts outside the standard range?
Locking method is specifiable independently of the rest: nylon insert, all-metal deformed thread, serrated flange, or none. Made by cold heading or tapping.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
