DIN985 Zinc Plated Nylon Insert Nut

DIN985 zinc plated nylon insert nuts are prevailing torque type lock nuts featuring a non-metallic (nylon/polyamide) insert that provides vibration-resistant locking action. The zinc plating offers corrosion resistance while maintaining electrical conductivity.

Key Features:

Self-locking: The nylon collar creates friction against the bolt thread, preventing loosening from vibration

Reusable: Can typically be reused 5-10 times while maintaining locking performance

Corrosion Protection: Zinc plating (typically 5-8µm) provides basic corrosion resistance

Standard Compliance: Meets DIN 985 (ISO 7040) dimensional standards

Temperature Range: -40°C to +120°C (nylon insert integrity range)

Technical Specifications:

Material: Carbon steel (grade 5/8 equivalent) with nylon-6.6 insert

Finish: Zinc plating (clear or yellow chromate passivation available)

Thread: Metric coarse thread (standard)

Locking Torque: Typically 25-40% higher than standard nut installation torque

Applications:

Vibration-prone assemblies (automotive, machinery)

Electrical grounding systems (zinc maintains conductivity)

General industrial fastening where vibration resistance is required

Installation Notes:

Hand-thread until nylon engages (do not cross-thread)

Final tightening requires 20-30% more torque than standard nuts

Avoid lubricants on nylon insert