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FULLERKREG DIN 6926 hex flange nylon insert lock nuts feature a wide bearing flange and a non-metallic nylon insert that grips the bolt thread to resist loosening under vibration and dynamic loads. The smooth, non-serrated flange face distributes clamping load evenly without marking the mating surface — ideal for assemblies where surface finish must be preserved. Manufactured from SUS304 austenitic stainless steel to DIN 6926 / ISO 7044 standard, passivated and bright-finished for corrosion resistance in demanding environments.
| Standard | DIN 6926 / ISO 7044 |
| Type | Hex Flange Nylon Insert Lock Nut — Non-Serrated Flange |
| Material | SUS304 Stainless Steel (A2) |
| Strength Grade | A2-70 |
| Surface Treatment | Bright Finish + Passivation (洗白钝化) |
| Flange Type | Non-Serrated (Smooth Flange) |
| Thread | Metric Coarse Thread (ISO 68-1) |
| Size Range | M5 – M20 |
| Drive Type | Hex (Wrench / Spanner) |
| Locking Mechanism | Nylon Insert (Prevailing Torque) |
| Reusability | Limited (nylon insert degrades with repeated use) |
| Operating Temp. | –50 °C to +120 °C (nylon insert limit) |
All dimensions per DIN 6926. Tolerances per ISO 4759-1.
| Thread d |
Pitch p (mm) |
Wrench s (mm) |
Flange Dia. dc (mm) |
Nut Height m (mm) |
e min (mm) |
Nylon Height n (mm) |
Max Proof Load (kN) |
Unit Weight (g/pc) |
|---|---|---|---|---|---|---|---|---|
| M5 | 0.80 | 8 | 11.8 | 5.0 | 8.79 | 2.4 | — | ~2.5 |
| M6 | 1.00 | 10 | 14.2 | 6.0 | 11.05 | 2.9 | — | ~4.5 |
| M8 | 1.25 | 13 | 17.9 | 8.0 | 14.38 | 3.5 | — | ~9.5 |
| M10 | 1.50 | 15 | 21.8 | 10.0 | 16.64 | 4.0 | — | ~16 |
| M12 | 1.75 | 18 | 26.0 | 12.0 | 20.03 | 4.8 | — | ~27 |
| M14 | 2.00 | 21 | 29.9 | 14.0 | 23.36 | 5.1 | — | ~40 |
| M16 | 2.00 | 24 | 34.5 | 16.0 | 26.75 | 5.8 | — | ~60 |
| M20 | 2.50 | 30 | 42.8 | 20.0 | 32.95 | 7.2 | — | ~115 |
* Unit weights are approximate reference values. Actual weight may vary ±5% due to nylon insert and manufacturing tolerances. Contact FULLERKREG for certified weight data if required.
| Application Scenario | Recommended Size | Notes |
|---|---|---|
| Light structural / sheet metal | M5 – M8 | Wide flange reduces pull-through risk |
| Marine / outdoor equipment | M8 – M16 | A2 SUS304 resists salt spray and humidity |
| Food processing / clean rooms | M6 – M12 | Smooth flange, no serration marks on surface |
| Automotive / vibration-prone | M8 – M20 | Nylon insert provides prevailing torque locking |
| Electrical enclosures / panels | M5 – M10 | Non-conductive nylon insert adds insulation benefit |
These nuts are manufactured to DIN 6926 (Prevailing torque type hexagon nuts with flange and with non-metallic insert). The standard covers steel materials in classes 8, 10, and 12; for stainless steel, the equivalent reference is ISO 7044. DIN 6926 specifies nominal diameters from M5 through M20 (including M22 per some editions). The prevailing torque element (nylon insert) shape is at the discretion of the manufacturer per the standard.
Related standards: ISO 7044 · DIN 985 (non-flanged version) · DIN 6923 (serrated flange version) · ISO 4759-1 (tolerances)
DIN 6926 Non-Serrated Flange Nylon Lock Nuts — A2 Stainless Steel
| [Photo 1] | [Photo 2] | [Photo 3] | [Photo 4] |
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