Product Description
M3 Grade 10.9 Zinc Plated Socket Button Head Screws – ISO 7380
M3 Grade 10.9 high tensile steel socket button head screws with a zinc plated finish. The rounded button head provides a compact profile, with an internal hexagon socket accepting a 2mm Allen key.
Featuring an M3 × 0.5mm metric coarse thread, these screws are available in 6mm, 8mm, 10mm and 12mm lengths for compatible machinery, equipment assembly, repairs and maintenance.
Specifications
| Thread size | M3 |
|---|---|
| Thread pitch | 0.5mm – metric coarse |
| Thread direction | Right-hand |
| Material | High tensile steel |
| Property class | 10.9 |
| Finish | Zinc plated |
| Head style | Rounded socket button head |
| Dimensional standard | ISO 7380-1 – button head without flange |
| Head diameter | 5.40–5.70mm |
| Head height | 1.40–1.65mm |
| Drive size | 2mm hexagon socket / Allen key |
| Minimum socket engagement depth | 1.04mm |
| Available lengths | 6mm, 8mm, 10mm and 12mm |
| Length measurement | From beneath the head to the end of the screw |
Available Lengths
- M3 × 6mm
- M3 × 8mm
- M3 × 10mm
- M3 × 12mm
Key Features
- Grade 10.9 high tensile steel construction.
- Zinc plated finish provides corrosion protection.
- Rounded button head for a compact fastening profile.
- M3 × 0.5mm metric coarse thread.
- Internal hexagon drive accepts a 2mm Allen key.
Selection and Installation
Choose the length required for the joint, measured from beneath the head. Use with compatible M3 × 0.5mm tapped holes or matching nuts.
Button head screws have reduced load-bearing capacity because of their head geometry. Select a tightening torque appropriate to the screw design and joint, and seat the 2mm Allen key fully before tightening.
Pack Sizes
Available in quantities of 5, 10, 20, 50, 100, 250, 500 or 1000 screws. Select the required length and pack size before ordering.
Standards
- ISO 7380-1 – hexagon socket button head screw dimensions.
- ISO 898-1 – mechanical property class reference, subject to the reduced loadability of the button head design.
- ISO 261 – metric screw thread diameter and pitch series.
