T head bolts with shoulder

a.) These type of screws are distinguished by the direction in which they tighten and loosen. Their main difference is their direction of rotation.

b.) Right-hand thread screw - Standard screws, tightened when turned clockwise and loosen when turned counterclockwise, used in most applications.

c.) Left-hand thread screw - Non-standard screws, tighten counterclockwise, primarily used in power or safety-related situations.

Special design for an internal thread tube, mushroom head, partially knurled body

Hexalobular socket with big shoulder

Hexalobular socket (6 lobe) / metric thread for both ends

a) 壓鑄螺釘(螺絲)，也稱為自鉚螺釘, 是用於鈑金製造和其他需要牢固, 永久緊固的應用的緊固件. 它們通常由頸部或頭底下帶有滾花或鋸齒狀的螺紋螺柱搭配平面頭型或法蘭頭型組成。

b) 安裝過程包括將壓鑄螺釘插入金屬板上已預先沖孔/鑽孔的孔中. 然後, 使用壓力機或類似工具, 將螺釘的滾花部分壓縮到周圍的金屬中, 從而形成牢固且永久的連接, 無需焊接或額外的硬體. 其優點具有高強度、抗振動和薄型安裝等。

特殊半圓頭螺栓, 三角錐尾端, 梅花孔穴依照 ISO 10664 (6 lobe); 技術清潔度要求, 無顆粒。