RAN MATERLAL: 1010 1035 1045
FINISH: BLACK/ZP
STANDARD: DIN985
ASME-B18.16.6
SIZE: M3-M72
#10-3
GRADE: IS0 888-2 (CL.6/8/10)
NE2NE5,NEB
Our Nylon Insert Lock Nuts, also known as Nyloc Nuts, are designed to provide a reliable locking function in bolted assemblies where vibration, movement, or repeated mechanical loading may cause conventional nuts to loosen. Unlike standard hex nuts, these nuts incorporate a nylon insert at the top of the nut, which creates controlled interference with the mating bolt thread during installation. This friction-based locking action helps resist rotational loosening and maintains a more secure fastening connection under vibration and dynamic conditions. As a result, Nylon Insert Lock Nuts are widely used in automotive components, machinery, equipment, electrical products, industrial assemblies, and general mechanical applications where maintaining fastening integrity is an important consideration.
The key advantage of a Nylon Insert Lock Nut lies in its integrated non-metallic locking element. As the bolt passes through the nylon insert, the insert grips the external thread and generates additional resistance against rotation. Unlike products that rely solely on tightening torque or external locking accessories, the locking function is built directly into the nut, eliminating the need for a separate locking component in suitable applications. This design can help simplify assembly and reduce the number of loose components that need to be handled during production. It is particularly useful in applications subject to vibration, mechanical movement, intermittent loading, or other conditions where conventional nuts may gradually rotate loose.
Our Nylon Insert Lock Nuts are manufactured from 1010, 1035, and 1045 carbon steel, providing flexibility for different application and mechanical requirements. Available mechanical property classes include ISO 898-2 Class 6, Class 8, and Class 10, allowing customers to select an appropriate strength level according to the requirements of the complete bolted joint. Proper selection of the nut class should be coordinated with the corresponding bolt grade, thread engagement, tightening requirements, and actual service conditions to ensure the fastening system performs as intended.
One of the practical advantages of Nylon Insert Lock Nuts is that the locking function is integrated into the nut itself. This means that in suitable applications, manufacturers do not need to add separate locking washers or other external locking components simply to provide basic resistance to loosening. For OEM production lines and high-volume assembly, this can simplify component management and streamline installation. The conventional hexagonal exterior also allows the nut to be installed using standard wrenching tools, making it easy to integrate into existing fastening processes.
Our Nylon Insert Lock Nuts are manufactured according to recognized international standards, including DIN 985 and ASME B18.16.6, supporting standardized fastening requirements for different markets. This broad size coverage allows the product to serve both compact mechanical assemblies and larger industrial fastening applications, giving distributors and industrial buyers greater flexibility when sourcing locking nuts across multiple product lines.
DIN 985
ASME B18.16.6
Metric: M3–M72
Inch: #10–3"
To meet different application and environmental requirements, Nylon Insert Lock Nuts are available in Black and Zinc Plated (ZP) finishes. The appropriate finish can be selected according to the surrounding environment, expected exposure, and requirements of the complete fastening system.
A practical option for general industrial applications where a dark surface is preferred.
Enhanced corrosion protection for common indoor and moderately corrosive environments.
Nylon Insert Lock Nuts are particularly valuable in applications where fastening components are exposed to vibration or repeated movement. Typical applications include automotive assemblies, machinery, industrial equipment, electrical equipment, mechanical structures, and general-purpose equipment where maintaining the position of the nut is important. However, because the locking element is made from nylon, the allowable service temperature and chemical exposure should be considered during product selection. For high-temperature applications beyond the suitable range of the nylon insert, an all-metal locking nut may be a more appropriate solution.
With 1010, 1035, and 1045 carbon steel options, ISO 898-2 Class 6/8/10 strength classes, DIN 985 and ASME B18.16.6 standards, M3–M72 and #10–3" sizes, and Black/Zinc Plated finishes, our Nylon Insert Lock Nuts provide a flexible sourcing solution for manufacturers, distributors, and industrial procurement teams.
By combining a standardized hex nut body with an integrated nylon locking element, they offer an efficient way to improve resistance to vibration-induced loosening without adding a separate locking component — a practical balance of anti-loosening performance, standardized specifications, installation convenience, and sourcing flexibility for general industrial, automotive, machinery, and equipment applications.
