Flat head hexagon socket barrel nut

Cold heading process is one of the new processes for pressure machining of less or no cutting
metal. It is a processing method that utilizes the plastic deformation of metal under the action of
external forces, and with the aid of molds, redistributes and transfers the volume of metal to form
the required parts or blanks. The cold heading process is most suitable for producing standard
fasteners such as bolts, screws, nuts, rivets, and pins.etc

Flat Head Hexagon Socket Barrel Nuts, also known as socket barrel nuts or barrel nuts with hex sockets, are specialized fasteners designed for applications requiring a flush or low-profile connection with internal hex drive compatibility.

Key Features:

Flat Head Design – The top of the nut is flat (countersunk), allowing it to sit flush with or below the surface of the material, providing a smooth finish.
Flat head hexagon socket barrel nut
Hexagon Socket (Internal Hex Drive) – The nut features a hexagonal recess (like a socket head cap screw) that requires an Allen key (hex key) or a hex driver bit for installation and removal.
Barrel Shape – The body of the nut is cylindrical (barrel-shaped), making it suitable for applications where a traditional hex nut may not fit or where rotational stability is needed.
Threaded Interior – Contains internal threads to mate with a corresponding bolt or threaded rod.
Material & Finishes – Typically made from steel (grade 8.8, 10.9, or 12.9), stainless steel (A2/A4), or brass, with optional coatings like zinc plating, black oxide, or galvanization for corrosion resistance.

Common Uses:

Aerospace & electronics due to their compact and secure fastening.
DIY & woodworking projects requiring hidden or recessed nuts.

Sizing & Specifications:

Available in metric (M3, M4, M5, M6, etc.) and imperial (1/4″, 5/16″, etc.) sizes.
Thread pitch varies (fine or coarse threads depending on application).
Flat head hexagon socket barrel nut