Description
ISO 7380 Hexagon Socket Button Head Screw M4x16-A4 — BOLTON SKU 56924.
About the ISO 7380 Hexagon Socket Button Head Screw
This is an M4 x 16 mm button head socket screw in A4 stainless steel to ISO 7380 (current part 1, ISO 7380-1). The standard covers hexagon socket button head screws with reduced loadability: a low, domed head and a comparatively small socket that trade some drive and preload capacity for a neat, low-profile finish. At M4 the coarse pitch is 0.7 mm, the head diameter is 7.6 mm with a height of only 2.2 mm, and the drive is a 2.5 mm hex key. The 16 mm length is the longer of the M4 button head options BOLTON lists, giving extra grip or engagement where the joint stack is deeper. The ISO 7380 Hexagon Socket Button Head style is chosen when a rounded, snag-free external surface matters more than maximum clamping force, and the A4 (316-type) grade adds chloride-corrosion resistance.
Key specifications
| Standard | ISO 7380-1 (button head screws, reduced loadability) |
|---|---|
| Thread size | M4, coarse pitch 0.7 mm |
| Nominal length | 16 mm |
| Head diameter | 7.6 mm |
| Head height | 2.2 mm |
| Drive | 2.5 mm internal hexagon |
| Material | A4 austenitic stainless steel (316 type, ISO 3506 family) |
Typical applications
Button head M4 screws of this length typically secure panels, guards, covers and trim where the domed head must remain flush-looking and safe to brush against. Because the standard is a reduced-loadability design, this variant suits retention and appearance-critical fixing rather than highly loaded structural joints.
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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