Description
ISO7380 M3x8-A4 SCREW M3x8 Hexagon socket Button Head — BOLTON SKU 60122.
About the ISO 7380 Hexagon Socket Button Head
This item is a hexagon socket button head screw to ISO 7380, thread size M3, 8 mm nominal length, in A4 austenitic stainless steel. ISO 7380 is the international standard for button head screws with a hexagon socket drive: a domed, low-profile head with a large bearing surface, driven with a standard hex key. The button head suits applications where a lower head profile and a cleaner appearance are wanted than a full cap head provides, while the socket drive allows assembly in confined spaces. The A4 material grade in the designation refers to the acid-resistant austenitic chromium-nickel-molybdenum stainless steel class of the ISO 3506 fastener-material system, the grade generally selected for improved corrosion resistance in harsher or marine-influenced environments. Dimensions, head geometry and mechanical properties are controlled by the referenced standards rather than by a single manufacturer.
Key specifications
| Type | Button head screw, hexagon socket drive |
|---|---|
| Standard | ISO 7380 |
| Thread size | M3 |
| Nominal length | 8 mm |
| Material | A4 austenitic stainless steel (ISO 3506 grade class) |
Typical applications
ISO 7380 button head screws in A4 stainless are used in equipment builds, enclosures, brackets and panel work across aerospace, defence, UAV and general industrial assembly, particularly where corrosion resistance and a low-profile head are required. They are a standard workshop and production fastener for small metric assemblies.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).
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