Hex self-locking nut Niczuk M8 — stainless steel/steel not specified

Hexagonal self-locking nut Niczuk M8 in stainless steel/steel is designed to secure threaded connections and reduce the risk of loosening under vibration. The M8 size fits standard metric threads and the self-locking feature provides frictional resistance that maintains preload in assemblies where movement or shock could otherwise cause fasteners to back off. The nut is intended for use with bolts and studs of compatible M8 thread pitch in general fastening applications.

Advantages

The self-locking mechanism increases joint reliability by creating axial friction against the mating thread without requiring additional locking elements. Made from stainless steel/steel, the nut combines corrosion resistance properties with mechanical strength suitable for many indoor and outdoor environments. Its hexagonal shape allows for simple installation and removal using common wrenches or sockets, enabling standard assembly and maintenance procedures.

Suitable for

• Mechanical assemblies and machinery where vibration is present
• Automotive repairs and vehicle components requiring M8 fasteners
• Construction and maintenance tasks with metric threaded connections
• Equipment mounting, brackets, and structural fastening requiring reliable locking

Key specifications

• Type: Hexagonal self-locking nut
• Thread size: M8 (metric)
• Material: stainless steel/steel (not specified which part is stainless)
• Locking method: frictional self-locking insert/feature
• Drive: hexagonal, fits standard wrenches and sockets

How to use

Select a corresponding M8 bolt or stud with matching thread pitch, hand-start the nut onto the threaded component to avoid cross-threading, and then tighten to the required torque using a wrench or socket appropriate for a hex nut. The self-locking feature will engage as the nut tightens, increasing friction to resist loosening; follow equipment-specific torque recommendations to achieve correct preload without damaging threads or the locking element.

Usage recommendations

For assemblies exposed to frequent disassembly, inspect the locking feature for wear and replace the nut if the locking ability diminishes. Avoid applying lubricants directly to the locking element unless specified by application guidelines, as lubrication can reduce locking performance. When corrosion resistance is critical, confirm which material—stainless or standard steel—applies to the specific part and choose compatible coatings or materials for mating fasteners.