Description
Overview
DIN7 specifies the dimensional requirements for parallel pins, ensuring reliable interchangeability and engineering performance.
This selected size is specified with diameter M4, length 8 mm, thread M4, pitch 0.7 mm.
Sold in multiples of '200 pieces. 1 Box = '200 pieces.
Material, Grade & Strength
Select the material and grade according to the intended load, environment and application.
Finish & Corrosion Protection
Plain finish is intended for protected indoor applications.
Typical Uses
Used in machinery, maintenance, manufacturing, agriculture, mining and general engineering applications.
Technical Tips
- Select the correct size and material for the application.
- Inspect components before installation.
- Follow recognised engineering practices and manufacturer recommendations.
Dimensions – DIN 7991 / ISO 10642 M4 x 8
| Standard | DIN 7991 / ISO 10642 |
|---|---|
| Product | Hexagon socket countersunk screw |
| Thread | M4 x 0.7 |
| Length (l) | 8 mm (overall, incl. head) |
| Head diameter (dk) | 8 mm |
| Head height (k) | 2.3 mm |
| Hex key (s) | 2.5 mm |
| Weight (calculated) | 0.9 kg per 1 000 pieces |
Material, Grade & Strength
| Material | High tensile alloy steel, property class 10.9 |
|---|---|
| Property class | 10.9 |
| Tensile strength Rm (min) | 1040 MPa |
| Yield / 0.2% proof Rp0.2 (min) | 940 MPa |
| Proof load stress | 830 MPa |
| Hardness | 320-380 HV |
| Elongation after fracture (min) | 9 % |
| Matching nut | property class 10 (ISO 898-2) |
Finish & Corrosion Protection
Plain / self colour: No applied coating. Stainless, brass and nylon parts are supplied plain; plain steel parts need oil, paint or protected environments.
DIN 7991 data sheet – all sizes
| Size | Thread | Head diameter (dk) | Head height (k) | Hex key (s) |
|---|---|---|---|---|
| M3 | M3 x 0.5 | 6 mm | 1.7 mm | 2 mm |
| M4 | M4 x 0.7 | 8 mm | 2.3 mm | 2.5 mm |
| M5 | M5 x 0.8 | 10 mm | 2.8 mm | 3 mm |
| M6 | M6 x 1 | 12 mm | 3.3 mm | 4 mm |
| M8 | M8 x 1.25 | 16 mm | 4.4 mm | 5 mm |
| M10 | M10 x 1.5 | 20 mm | 5.5 mm | 6 mm |
| M12 | M12 x 1.75 | 24 mm | 6.5 mm | 8 mm |
| M14 | M14 x 2 | 27 mm | 7 mm | 10 mm |
| M16 | M16 x 2 | 30 mm | 7.5 mm | 10 mm |
| M20 | M20 x 2.5 | 36 mm | 8.5 mm | 12 mm |
| M24 | M24 x 3 | 39 mm | 14 mm | 14 mm |
Nominal dimensions per DIN 7991 / ISO 10642. Weights are calculated from nominal dimensions and are a guide only (±10%). Values for fit and strength should be confirmed against the standard for critical applications.
Specifications
| Measurement Type | Metric |
|---|---|
| Thread Size | M4 |
| Thread Pitch | 0.7 mm |
| Thread Style | Fully Thread |
| Drive Size | 2.5 mm |
| Drive Type | Hex |
| Head Style | Round |
| Diameter | M4 |
| Length | 8 mm |
| Material | Hi - Tensile Steel |
| Finish | Plain |
| Grade | Grade 10.9 |
| Standards Met | DIN 7991 |
| Package Quantity | 200 |
| Package Type | Box |