Button Head Socket Screws — Unbrako ISO 7380

Unbrako Button Head Socket Screws offer a low-profile, aesthetically refined fastening solution for applications where a smooth dome-shaped head is preferred over the cylindrical head of standard cap screws. Available in metric sizes M3 through M12, these fasteners feature a wide, shallow dome head with a hexagon socket drive that provides an appealing finished appearance while maintaining strong clamping force. The button head design distributes bearing pressure over a wider area than a countersunk screw while protruding less than a standard socket head cap screw, making it the ideal compromise between strength and aesthetics. Manufactured from alloy steel with black oxide finish, Unbrako button heads benefit from the same premium metallurgy and heat treatment processes that define all Unbrako products. Also available in flange button head configuration for increased bearing surface without a separate washer. Shri Narayan Machinery LLP in Noida supplies the complete Unbrako button head range for consumer equipment, enclosures, and light-duty engineering applications.