Special low head screw NYLOK

a) DIN 966 係指十字孔半沉頭螺絲標準, 一般常見孔型為十字孔 (Phillips) 和米字孔 (Pozi), 這些設計便於使用相容的螺絲起子進行安裝和拆卸，可輕鬆安裝和拆卸。

b) 此螺絲頭型為半沉頭，但具有圓頂或微凸起頂部, 又稱半圓頭, 提供半齊平和裝飾性外觀。

a) A self-tapping screw for thermoplastics is a specialized fastener designed to create its own threads as it is driven into plastic materials.

b) These screws have wider, sharp, and deep threads, which allow them to cut into the softer thermoplastic material efficiently, creating a secure, long-lasting hold.

Indented hex washer head with collar

a) DIN 968 制定了帶華司盤頭十字孔自攻螺絲的標準。這些螺絲通常搭配兩種類型的孔型：H 型（十字槽 phillips）和 Z 型（米字槽 pozidrive), 兩者均設計用於輕鬆安裝和拆卸。

b) DIN 7970 自攻螺絲規範中 亦制定了兩種類型的螺紋尾端：C 型（錐型尾 cone point）和 F 型（平尾 flat point）。

Serretions under head / Extremely short length

a) A self-tapping screw for thermoplastics is a specialized fastener designed to create its own threads as it is driven into plastic materials.

b) These screws have wider, sharp, and deep threads, which allow them to cut into the softer thermoplastic material efficiently, creating a secure, long-lasting hold.