ISO 7380-1 Hexagon Socket Button Head Screws

ISO 7380-1 Hexagon Socket Button Head Screws are metric machine screws with a rounded button-style head and an internal hexagon socket drive. They are specified by ISO 7380-1 for applications requiring a compact head profile and internal drive. The current ISO 7380-1:2022 edition covers metric coarse-thread screws in steel and stainless steel, with sizes from M3 to M16. The standard identifies these screws as having reduced loadability because of their head geometry.

The rounded head sits lower than a conventional hexagon head while providing a finished appearance on exposed assemblies. The internal hex socket allows installation from above with a hex key or compatible driver, making the screw useful where access for a conventional external wrench is limited. Unlike ISO 7380-2, this version does not have an integral collar beneath the button head.

These screws are commonly used in machinery, automation equipment, industrial assemblies, metal structures, fixtures, enclosures, and general mechanical fastening. Their compact head form is particularly useful where a lower-profile fastener is preferred without using a countersunk hole. Common market terminology includes hexagon socket button head screw, hex socket button head screw, and button head socket screw.

For B2B procurement, ISO 7380-1 screws are commonly sourced in carbon or alloy steel and stainless steel, with different property classes and finishes selected according to the application. Standard metric sizes support repeat purchasing for distributors, machinery manufacturers, equipment builders, and maintenance suppliers. Bulk supply, OEM sourcing, custom packaging, and specification-based purchasing can be supported according to project requirements.