Non-Serrated Flanged Nylon Locking Nuts (DIN 6926)
DIN 6926 Non-Serrated Flanged Nylon Insert Locknuts (Flanged Nyloc Nuts)
What is DIN 6926?
DIN 6926 specifies the dimensions and requirements for hexagon nuts with an integrated, non-serrated flange and a nylon insert. This design combines three key functions in one component:
1) a locking feature via the nylon insert that resists loosening under vibration,
2) increased load distribution through the wide flange, eliminating the need for a separate washer
3) a non-marring bearing surface suitable for finished or delicate materials. They are a cost-effective and assembly-efficient solution for secure fastening in applications prone to vibration.
Comparison: DIN 985 vs. DIN 6926 vs. DIN 6923
The key difference lies in the locking mechanism and the presence of a flange.
Standard |
Product Name |
Key Features |
Locking Mechanism |
Flange |
| DIN 985 | Hexagon Nylon Insert Locknut | Standard hex nut with nylon collar. | Nylon insert (friction-based). | No. |
| DIN 6926 | Flanged Hexagon Nylon Insert Locknut | Hex nut with integrated non-serrated flange and nylon collar. | Nylon insert (friction-based). | Yes, Non-Serrated. |
| DIN 6923 | Serrated Flanged Hexagon Nut | Hex nut with integrated serrated flange. | Serrations (mechanical biting). | Yes, Serrated. |
Product Characteristics & Considerations
Primary Advantage: Provides reliable vibration resistance without damaging the contact surface, thanks to the combination of the nylon insert and smooth flange.
Load Distribution: The wide flange spreads clamping force, making these nuts ideal for use with oversized holes, thin sheets, or soft materials.
Temperature Limitation: The nylon insert can degrade (become brittle and lose effectiveness) at sustained high temperatures. Consult manufacturer specifications for the maximum continuous operating temperature.
Reusability: Can be reused a limited number of times, but the locking torque will progressively decrease with each reinstallation. For critical applications, replacement is recommended.
Material & Strength Grade Selection Guide
Material choice determines corrosion resistance, while the strength grade (for steel) indicates the nut's load-bearing capacity. It is crucial to match the nut strength grade with that of the bolt/screw to prevent thread stripping.
Material / Grade |
Key Properties |
Typical Applications |
Important Notes |
| Steel, Zinc-Plated (Grade 6 / Class 6) | Medium strength. Zinc plating offers basic corrosion protection for occasional moisture exposure. | General machinery, equipment, and non-critical structural assemblies in dry or indoor environments. | The most common economic choice. Ensure mating bolt is of comparable strength (e.g., ISO 898-1 Grade 6.8 or 8.8). |
| Steel, Zinc-Plated (Grade 8 / Class 10) | High strength. Approximately 25% stronger than Grade 6 nuts. | High-stress applications: valves, pumps, motors, and critical automotive or structural components. | Requires a high-strength mating bolt (e.g., ISO 898-1 Grade 10.9 or 12.9). |
| Stainless Steel A2 (18-8) | Good corrosion resistance, resists rust from water and mild chemicals. Non-magnetic in annealed state. | Outdoor fittings, food processing, marine interiors, and damp environments requiring corrosion resistance. | Offers the best balance of corrosion resistance, strength, and cost for most stainless applications. |
| Stainless Steel A4 (316) | Excellent corrosion resistance, superior to A2. Withstands harsh weather, salt water, and most chemicals. | Marine exteriors, chemical processing plants, coastal architecture, and highly corrosive environments. | Premium material for maximum durability in aggressive conditions. Slightly lower mechanical strength than equivalent grade steel nuts. |
Download DIN 6926 Dimensions pdf DIN 6926 Weight Chart or views online
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Active Stock List (All items are currently in stock)：
PIC |
PRODUCT |
SIZE |
GRADE |
FINISH |
THREAD |
 |
Non-Serrated Flanged Nylon Locking Nuts (DIN 6926) - Stainless Steel (A2) | M4-M10 | A2 Grade | Natural | Coarse |
|
Non-Serrated Flanged Nylon Locking Nuts (DIN 6926) - Marine Stainless Steel (316) | M6-M10 | A4 Grade | Natural | Coarse |
|
DIN 6926 Nylon Flange Steel Class 6 Zinc Plated Smooth Bottom Nut | M4-M12 | ISO Class 6 | Zinc CR3 | Coarse |
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