Hammer threaded bolt

This knurled head bolt consists of a series of small ridges that are rolled onto the surface of the head, provides a better grip, making it easier to turn the bolt by hand without the need for tools.

Hexalobular socket with big shoulder

a.) A knurled head screw with internal threads inside the hole and grooves around the head is a specialized fastener designed for applications requiring manual tightening or where a secure grip is needed.

b.) The knurled head features textured grooves around its circumference, providing enhanced grip for hand-tightening or loosening. Meanwhile, the internal threads inside the hole enable the screw to be securely fastened to a threaded component or inserted into a pre-threaded hole.

a.) 焊接螺栓是一種螺紋緊固件，當一旦與對手件鉚合後，即可提供耐用且可靠的固定。 通常這些螺栓在其頭部上方或下方會有不同形狀的“焊接點”，可因應不同產業需求自訂, 來滿足特定的要求。

b.) 此焊接螺栓具有 360° 的凸出焊接圈，其可提供全面密封，防止油、空氣或水洩漏； 春澤可提供各種螺紋外徑、材料、及尺寸的工業用焊接緊固件。

a) Also known as cam lock dowel screw, it is a component used in knock-down (KD), ready-to-assemble (RTA), or flat-pack furniture and cabinetry. It is designed to join two pieces of material securely while allowing for easy assembly and disassembly.

b) Overall, they provide a reliable and efficient method for consumers to assemble furniture without requiring special tools or expertise.

a) External hexalobular socket (6 lobe) / metric thread / tapping thread for both ends. 

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.