Standard ISO 7380

Material SS304 – A2
Button L, Button Bolt is a bolt that has a round head and protrudes in the middle in the shape of a hexagon which functions for fastening. Fastening is done with a hexagonal axle iron key which is bent into an L shape. L bolts are usually used for fastening on planes that are made indented so that the head of the L bolt is flush with the plane.

Sizes
M3   M4   M5   M6   M8   M10   M12