平頭梅花柱

冷間圧造加工は、切削の少ない、あるいは切削を必要としない新しい圧造加工のひとつである。
金属。の作用による金属の塑性変形を利用した加工法である。
外力を受け、金型の助けを借りて、金属の体積を再分配し、移動させる。
必要な部品やブランクを製造します。冷間圧造工程は、標準的な
ボルト、ネジ、ナット、リベット、ピンなどの留め具。

について 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.

主な特徴

1. フラットヘッド – 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. 耐タンパー性 – The central column makes it difficult to remove with ordinary tools, enhancing security in public or high-risk installations.

一般的な用途：

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

• Automotive components

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

• Aerospace and machinery requiring secure fastening

• 平頭梅花柱

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.