DIN985 Rubber Ring Nut Lock Hexagonal Thin Nut

DIN985 Non-Metallic Insert Thin Lock Nut Integrated Documentation

1. ‌Standard Definition and Scope‌

• ‌Standard Source‌: Defined by the German Institute for Standardization (DIN), covering dimensions, materials, surface treatments, and performance requirements. Designed for applications requiring vibration-resistant fastening.

• ‌Thread Range‌: Metric threads from M5 to M24 (some sources extend to M3-M48), including coarse and fine pitch options.

• ‌Core Function‌: Utilizes a nylon insert to provide damping and anti-loosening effects, ideal for high-vibration environments (e.g., automotive engines, machinery spindles).

2. ‌Structure and Technical Parameters‌

1. ‌Structural Features‌

• Hexagonal thin design for space-saving installation.

• Proportional nylon ring height (h) to nut thickness (m). For example, an M6 nut has a minimum thickness of 4mm and a nylon ring height of 6mm.

2. ‌Key Dimensions (Examples)‌

• ‌M3‌: Across-flats width 5.5mm, thickness 1.65mm, height 4mm.

• ‌M10‌: Across-flats width 17mm, thickness 5.5mm, height 10mm.

3. ‌Weight Parameters‌

• Weight per thousand pieces increases with size: M3 ≈ 0.04kg, M10 ≈ 1.5kg.

3. ‌Materials and Manufacturing‌

• ‌Insert Materials‌: Nylon (polyamide) or full-metal variants (carbon steel, stainless steel A2/A4, brass).

• ‌Surface Treatments‌: Blue/white zinc plating, color zinc plating, Dacromet coating, or natural oxidation to suit corrosive environments.

• ‌Performance Grades‌: Carbon steel nuts comply with Grade 6, 8, 10, and 12; stainless steel options include A2-70 and A4-80.

4. ‌Application Fields‌

• ‌Automotive Industry‌: Engine components, chassis, and transmission systems exposed to high-frequency vibrations.

• ‌Mechanical Equipment‌: Machine tool spindles, robotic joints, and automation systems requiring stable connections.

• ‌Energy Infrastructure‌: Bolts for wind turbine assemblies and insulated fastening in power transmission equipment.

• ‌Aerospace and Rail‌: Aircraft structural components, rail track fasteners, and vibration-sensitive cabin fixtures.

• ‌Marine and Petrochemical‌: Corrosion-resistant fastening for deck machinery, pipelines, and valves in harsh environments.

5. ‌Cross-Standard Compatibility‌

• Compatible with DIN (Germany), GB (China), and ASME/ANSI (U.S.) standards for global applicability.