ISO · EN ISO 4036
Low Hexagon Nuts without Chamfer (Type 0) according to ISO 4036: Specifications and Supply
Technical Description and Application
The international standard regulates the geometric parameters and manufacturing quality requirements for low hexagon nuts (product grade 0) without chamfer. The nomenclature covers a range of metric threads from M1.6 to M10, corresponding to product grade B. These fasteners are designed for use in high-precision assembly units where a minimal profile height is critical.
For cases not covered by this regulation, or if specific tolerances are required, reference should be made to ISO 965-1, ISO 4759-1, and relevant international specifications.
Geometric Parameters
The size nomenclature and letter designations correspond to the ISO 225 specification. All linear dimensions are in millimeters.
Table 1. Dimensions of hexagon nuts (mm)
| Thread | P (pitch) | e (min.) | m (max.) | m (min.) | s (max.) | s (min.) |
|---|---|---|---|---|---|---|
| M1.6 | 0.35 | 3.28 | 1.0 | 0.75 | 3.2 | 2.9 |
| M2 | 0.4 | 4.18 | 1.2 | 0.95 | 4.0 | 3.7 |
| M2.5 | 0.45 | 5.31 | 1.6 | 1.35 | 5.0 | 4.7 |
| M3 | 0.5 | 5.88 | 1.8 | 1.55 | 5.5 | 5.2 |
| M3.5 | 0.6 | 6.44 | 2.0 | 1.75 | 6.0 | 5.7 |
| M4 | 0.7 | 7.50 | 2.2 | 1.95 | 7.0 | 6.64 |
| M5 | 0.8 | 8.63 | 2.7 | 2.45 | 8.0 | 7.64 |
| M6 | 1 | 10.89 | 3.2 | 2.9 | 10.0 | 9.64 |
| M8 | 1.25 | 14.20 | 4.0 | 3.7 | 13.0 | 12.57 |
| M10 | 1.5 | 17.59 | 5.0 | 4.7 | 16.0 | 15.57 |
Technical Conditions and Quality Standards
| Material | General requirements | Thread tolerance class | Min. hardness | Product grade | Surface quality and protection | Surface quality and protection | Surface condition | Testing | |
|---|---|---|---|---|---|---|---|---|---|
| Steel | ISO 8992 | 6H (according to ISO 724, ISO 965-1) | 110 HV 30 | B (according to ISO 4759-1) | Zinc flake coating (ISO 10683) | Electroplating (ISO 4042) | Alternative finishing methods upon customer agreement | Tolerances according to ISO 6157-2 | Conducted according to ISO 3269 specification |
| Non-ferrous alloys | ISO 8992 | 6H (according to ISO 724, ISO 965-1) | According to ISO 8839 requirements | B (according to ISO 4759-1) | - | Electroplating (ISO 4042) | Alternative finishing methods upon customer agreement | Tolerances according to ISO 6157-2 | Conducted according to ISO 3269 specification |