特殊薄頭螺絲

a) DIN 912 (ISO 4762) 是指公制內六角螺絲的特定標準, 也稱為杯頭螺絲, 具有圓柱形頭部, 中心有六角形凹槽 (Socket), 可以使用內六角扳手 (Hex Key or Allen Wrench) 將其旋緊或鬆開. 這些螺絲通常用於需要高拉伸強度的各種應用。

b) 帶滾花頭的內六角螺絲是 DIN 912 的變化型，頭部周圍具有滾花紋理表面。這種設計提供了更好的抓握力，便於手動操作或調整，特別適用於需要頻繁調整的應用場合。

DIN 6922 概述了具有細桿徑的六角法蘭螺栓的尺寸和技術規格. 此螺栓另一特點是有一個法蘭圈, 頭部下方有一個圓盤形延伸部分, 用作整合墊圈. 法蘭圈的加入增強了軸承表面並有利於負載分佈. 狗尾端帶錐形截面尾

Screw refer to ISO 14581

十字或米字孔亦可接單生產

With small collar around body shank

a) DIN 7500 specifies self-tapping screws for metal, also known as thread-forming screws. These screws are designed to form or cut threads in a pre-drilled hole in metal materials, without requiring a pre-cut thread.

b) The screw shank has a three-lobe shape instead of a round cross-section, which reduces friction during installation, and facilitates smooth material displacement and efficient thread formation.

c) The long dog point (the extended, unthreaded tip of the screw) acts as a pilot, helping to align the screw with the pre-drilled hole during installation, and faciliates smooth installation.

d) A standard trilobe thread forming screw without dog point is avaialble upon request.