六角薄頭螺絲 圓柱末端

a) DIN 965 制定了具有十字槽孔 (通常稱為 phillips) 的平頭螺絲標準。這些螺絲通常用於需要平坦表面的應用. 平頭型能使螺絲與材料表面齊平, 從而提供整潔的外觀。

b) 十字槽孔與米字槽孔因其易於使用相容螺絲起子安裝和拆卸而被廣泛使用。此外, 另一常見的六角瓣孔(梅花孔)設計亦可提供更好的扭矩傳遞並最大限度地減少螺絲旋入過程中脫出的風險。

a) 與 DIN 912 不同的是，DIN 7984 螺絲具有薄型頭部且同樣採用六角孔做驅動 (內六角薄頭螺絲), 公制螺紋, 其牙外徑尺寸可從 M3 到 M24

b) DIN 7984 螺絲具有較薄的頭部，因其設計使它們與材料表面齊平。然而，這種設計可能無法提供與 DIN 912 螺絲較厚頭部相同的扭矩傳遞能力，後者由於其較厚的圓柱形頭部形狀而設計用於處理更高的扭矩。 

a) A stainless steel self-tapping thread for thermoplastics is a type of screw designed specifically to create its own threads when 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.

Extremely low head

a) This bolt features an external hexalobular socket with a small flange, and is designed for applications requiring a high torque transfer with reduced risk of cam-out. 

b) The star-shaped head allows for great torque transfer by distributing the load more evenly across the drive, compared to traditional drive systems like Phillips, Pozi or slotted.

a) A ribbed neck screw is a type of fastener designed with a special feature on its shank or neck. Instead of a smooth or threaded surface, the neck of the screw has ribbed, serrated, or knurled features. These ribs or serrations provide additional grip and resistance when the screw is driven into a material, preventing it from rotating or loosening.