DIN 985 manufactured in accordance with the standard our hexagonal fiber nuts, Thanks to the nylon ring inside, it offers a self-locking feature that prevents connection loosening. This model, which has a shorter height than standard hex nuts, provides a safe and economical solution against vibration, especially in applications with limited space.
| Feature | |
| Standard | DIN 985 – Hexagon Fiber Nut |
| Material | Carbon Steel, Alloy Steel, Stainless Steel |
| Material Quality | 5, 6, 8, A2, A4 |
| Coating | Electrogalvanized (White/Yellow), Hot-Dip Galvanized (HDG), Nickel, Black Oxide, Dacromet, Geomet |
| Tooth Type | Metric Coarse Thread, Metric Fine Thread (optional) |
| Measurement Range | From M2 to M64 |
| Production Method | Cold Forging, Machining |
| Thread Direction | Right-Hand Thread (standard) / Left-Hand Thread (upon request) |
- Vibrating machine connections
- Automotive and heavy vehicle connection systems
- Production of electrical household appliances and white goods
- Compact connection points
- Machinery and equipment installations
- General industrial fastening applications
- Lightweight structural systems requiring secure connections
- Indoor panel, control box, and module systems
- ISO 9001:2015 Quality Management System
- ISO 14001:2015 Environmental Management System
- ISO 45001:2018 Occupational Health and Safety Management System
- EU Declaration of Conformity (PED) certificate (Compliance with the Pressure Equipment Directive)
- Our production processes, DIN, EN, ISO, and ASTM is fully compliant with the standards
- Upon request EN 10204 3.1 certificate is provided
DIN 985 is a low-profile hexagon fiber nut standard with an elastic locking feature. The nylon ring (polyamide insert) located on the upper part tightly grips the screw threads during connection, preventing loosening. It has a shorter structure than DIN 982, which provides an advantage in areas requiring compact installation.
Key features:
• The nylon ring fits snugly around the teeth, preventing loosening.
• Can be used in confined spaces thanks to its low-profile design
• Provides better safety than standard nuts in vibrating environments
• Partially compliant with ISO 10511
DIN 985 nuts are typically manufactured from various materials such as carbon steel (e.g., strength classes 5, 8, 10), stainless steel (such as A2/304 and A4/316), and alloy steel. Material selection should be determined based on environmental conditions, chemical resistance, and load requirements.
Commonly used materials are as follows:
• Carbon steel: Provides strength from low to high with grades such as Class 5, 6, 8, 10, 12
• Alloy steel: For systems operating under high temperature and pressure (e.g., with B7/B16 bolts)
• Stainless steel: Offers high corrosion resistance with A2 (304) and A4 (316) grades
• Brass / Copper alloys: Preferred for electrical conductivity or decorative applications
DIN 985 nuts save space and increase connection safety thanks to their compact design and nylon locking ring. They are preferred in applications where there is a risk of loosening and where additional locking elements are not required.
Typical applications:
• Automotive and heavy vehicle connections
• Production of electrical household appliances and white goods
• Machine and equipment connections
• Construction and infrastructure applications
• Rail systems and metro lines
• Power plants and installation systems
• All areas requiring compact, secure connections in vibrating and moving systems
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