1. Standards & Specifications
Standard: German Industrial Standard (DIN 985), compatible with ISO 10511 (metric nylon lock nuts).
Thread: Metric coarse thread (M-series, e.g., M6, M12), 60° thread angle.
Design: Hexagonal nut with a nylon insert (PA6/PA66) for vibration-resistant locking.

2. Material & Grades
Body Material:
Carbon steel (zinc-plated or Dacromet-coated, Class 8/10 strength).
Stainless steel (A2-70/A4-80 for corrosion resistance).
Nylon Insert: Temperature-resistant up to -40°C to +120°C; avoid prolonged high-temperature exposure.

3. Key Features
Self-Locking: Nylon insert creates friction against the bolt thread, preventing loosening under vibration.
Insulation: Non-conductive, ideal for electrical applications.
Reusability: Limited reuse (nylon degrades over time; replace if insert is worn).

4. Applications
Automotive: Engine mounts, chassis components.
Machinery: Motors, pumps, conveyor systems.
Electronics: Circuit boards, grounding connections.
Rail/Aerospace: Vibration-prone fastening systems.

5. Advantages vs. Alternatives
vs. Standard Nuts: No need for additional lock washers; superior vibration resistance.
vs. Metal Lock Nuts: Easier installation, no thread deformation, but lower temperature tolerance.

6. Notes
Installation: Clean bolt threads and apply recommended torque (over-tightening damages the nylon).
Environment: Avoid UV exposure, chemicals, or temperatures >120°C.

Summary: DIN 985 nylon lock nuts offer reliable, reusable vibration resistance for dynamic applications, widely used in automotive, industrial, and electrical systems where secure fastening is critical.