Description
Overview
ISO 7380 defines a hexagon socket button head screw with a low rounded head. The button head provides a neat appearance and a broad bearing surface, while the internal hex drive allows installation where external spanner clearance is not available.
This selected size is specified with diameter M4, length 25 mm, thread M4, pitch 0.7 mm.
Sold in multiples of '200 pieces. 1 Box = '200 pieces.
Material, Grade & Strength
A4 stainless steel, commonly associated with 316 stainless, is selected for improved corrosion resistance in coastal, chemical and harsh outdoor environments.
Finish & Corrosion Protection
Corrosion resistance is provided by the stainless material itself rather than a plated coating.
Typical Uses
ISO 7380 button head screws are used on visible assemblies, equipment covers, guards, frames, furniture, panels and light machinery where a low-profile rounded head is preferred.
Technical Tips
- Use the correct hex key or socket bit to avoid rounding the drive.
- Button heads are lower than socket cap screws, so check suitability for high-load joints.
- Use washers where surface protection or load spreading is needed.
- Select stainless or coated finishes for exposed environments.
Frequently Asked Questions
When should a button head be used? Use it where appearance, low profile and internal hex drive access are more important than the higher head strength of a socket cap screw.
Specifications
| Measurement Type | Metric |
|---|---|
| Thread Size | M4 |
| Thread Pitch | 0.7 mm |
| Thread Style | Fully Thread |
| Drive Size | 2.5 mm |
| Drive Type | Socket |
| Head Style | Button |
| Diameter | M4 |
| Length | 25 mm |
| Material | Stainless Steel |
| Finish | Stainless steel |
| Grade | Grade (A4) |
| Standards Met | ISO 7380 |
| Package Quantity | 200 |
| Package Type | Box |