Flat head plum blossom with column

O processo de encabeçamento a frio é um dos novos processos para a maquinagem sob pressão com menos ou nenhum corte
metal. É um método de processamento que utiliza a deformação plástica do metal sob a ação de
forças externas e, com a ajuda de moldes, redistribui e transfere o volume de metal para formar
as peças ou os espaços em branco necessários. O processo de encabeçamento a frio é o mais adequado para a produção de
elementos de fixação, tais como cavilhas, parafusos, porcas, rebites, cavilhas, etc.

The flat-head plum blossom with column refers to a type of screw or bolt head that features a plum blossom (hexalobular) drive design with a central column. This design is commonly used in tamper-resistant fasteners, requiring a specialized driver bit for installation and removal.

Caraterísticas principais:

1. Flat Head – The top surface is flat, allowing it to sit flush with or below the material surface when installed.

2. Plum Blossom (Hexalobular) Drive – A star-shaped recess with six rounded lobes, providing better torque transmission and reduced cam-out compared to standard Phillips or slotted drives.

3. Central Column (Pin) – A small protrusion in the middle of the drive recess, acting as a security feature to prevent tampering with standard bits. Only a compatible pin-in-hex or security Torx bit can engage with it.

4. Tamper-Resistant – The central column makes it difficult to remove with ordinary tools, enhancing security in public or high-risk installations.

Aplicações comuns:

• Electronics (e.g., gaming consoles, hard drives)

• Automotive components

• Public fixtures (e.g., restroom hardware, street furniture)

• Aerospace and machinery requiring secure fastening

• Flat head plum blossom with column

Standards & Sizes:

• Often follows Torx TR (Tamper-Resistant) standards (e.g., Torx TR8, TR10, etc.).

• Available in various screw sizes (diameter and length) depending on application needs.

This design balances security, torque efficiency, and a low-profile finish, making it ideal for applications where both tamper resistance and a smooth surface are required.