Description
Overview:
These UNC nylon insert locking nuts are hex-profile fasteners made from steel with a bright zinc-plated finish for improved corrosion resistance. Each nut contains a nylon collar that provides prevailing torque to resist loosening from vibration and shock. Sized at 1/4 inch (6.35 mm) in the UNC coarse thread standard, they are widely used on construction and garden machinery where a secure, repeatable clamp is required. Typical uses include fixings on mowers, compactors, generators, pressure washers, and general fabrications. The standard hex form suits common spanners and sockets, making fitting straightforward. Supplied in a pack of 100 for workshop and site use. Manufacturer Part Number (MPN): 903 0650.
Key Features:
- 1/4 inch (6.35 mm) UNC thread for broad compatibility with imperial coarse-thread bolts and studs
- Nylon insert provides prevailing torque to reduce loosening under vibration and thermal cycling
- Zinc-plated steel for enhanced resistance to rust and general weathering
- Standard hex form for easy tightening with spanners or sockets in tight spaces
- Clean, consistent threads to support reliable assembly and repeatable clamp load
- Suitable for use across construction plant, agricultural and garden equipment
- Pack of 100 for convenient stocking in workshops, vans, and on-site kits
- Helps maintain joint integrity on brackets, guards, frames, and engine-mounted components
- Durable finish appropriate for indoor and outdoor environments
- Practical choice where a locking function is needed without separate washers
Typical Applications:
Used with matching UNC bolts or studs to secure guards, panels, brackets, engine cowls, frames, vibration mounts, control boxes, and accessories on machinery. Common on lawn and garden equipment, small plant, compressors, generators, pressure washers, and fabrication projects where joints experience movement or vibration.
Also known as:
Nyloc nuts, nylon lock nuts, elastic stop nuts, insert locknuts, prevailing torque nuts, self-lock nuts, stop nuts, UNC lock nuts.
Product Specifications
| L&S Part No. | 903 0650 |
|---|---|
| Unit of Sale | Pack of 100 |
| Key Features | - 1/4 inch UNC thread for imperial coarse-thread bolts - Nylon insert reduces loosening from vibration - Zinc-plated steel resists rust and weathering - Standard hex form fits common spanners - Pack of 100 for workshop and site use |
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