Description
Overview:
This Metric Nylon Insert Locking Nut is a Type P, DIN 982 compliant hex nut in M4 size, supplied in a bulk pack of 200 for workshop and site use. Made from steel with a bright zinc plated finish, it offers dependable corrosion resistance for indoor and outdoor environments. The embedded nylon collar applies prevailing torque to the male thread, helping to prevent loosening from vibration and shock. It is a practical choice for assemblies on construction plant, agricultural and garden machinery, small engines, pumps, frames, guards, and brackets. The standard M4 metric coarse thread (M4 x 0.7) fits common M4 bolts and set screws, and the hex form suits standard spanners and sockets. A robust general-purpose fastener for secure, tidy, and repeatable fastening jobs.
Key Features:
- DIN 982 Type P nylon insert locking nut for reliable anti-vibration performance
- M4 x 0.7 metric coarse thread for broad compatibility with standard M4 fixings
- Steel construction with bright zinc plating for enhanced corrosion resistance
- Nylon insert maintains clamping force and resists loosening under vibration
- Hex profile for easy installation with standard hand tools and sockets
- Suitable for indoor and outdoor service across varied environments
- Consistent sizing and threads for smooth assembly and repeatable torque
- Supplied in a pack of 200 for efficient stocking and batch assembly work
- Practical choice for machinery, fixtures, panels, guards, and brackets
- Can be reused with care, though locking performance reduces after multiple cycles
Typical Applications:
Securing M4 bolts on equipment subject to vibration and movement, including machinery guards, engine cowls, pump housings, control panels, brackets, frames, shelving, light fixtures, and small mechanisms. Widely used on construction equipment, garden machinery, workshop jigs, trailers, and general fabrications where a dependable self-locking nut is preferred over standard hex nuts plus separate washers.
Also known as:
Nyloc nuts, nylon insert nuts, self-locking nuts, prevailing torque nuts, lock nuts, nylock nuts, insert lock nuts, stop nuts, Type P nyloc, DIN 982 nuts.
Product Specifications
| L&S Part No. | 903 0581 |
|---|---|
| Unit of Sale | Pack of 200 |
| Size | M4 |
| Key Features | - DIN 982 Type P nylon insert locking nut - M4 x 0.7 metric coarse thread - Steel with bright zinc plating - Nylon collar prevents loosening from vibration - Supplied in a bulk pack of 200 |


