Double end stud with nibs on flange

A pivot bolt is specifically designed to serve as a pivot point or hinge in mechanical assemblies, featuring a rectangular cutting head with small shoulder.

a) External hexalobular socket (6 lobe) / metric thread / self tapping thread for thermoplastics.

b) A double-end stud with collar is a type of fastener that features threaded ends on both sides and a non-threaded central collar or flange. Thread types of both sides can be customized according to customer's request, differen surface treatment is available upon request. 

These screws are chosen for applications requiring secure fastening and precise alignment.

T-foot mounts are commonly used in solar panel installations primarily on pitched or sloped roofs. It is designed to be used with wood screws and can be quickly installed on the roof. 

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。

Very similar to DIN 6912 hexagon socket cap head screw, shoulder and dog point