China DIN6923 serrated anti‑loosening flange nut Manufacturers, Suppliers, Factory

Stud Bolt is a type of mechanical fastener that is threaded on both ends. It is designed to be used in the petrochemical, oil and gas, and other heavy industries. Stud bolts are commonly used in flange connections to join pipes or other machinery together. They provide a strong and secure connection that is resistant to high pressure and vibration.

In March 2026, the management and production teams of Ningbo Gangtong Zheli Fasteners Co., Ltd. held a special quality improvement meeting at its 15,000 sqm factory in Zhenhai Chemical Industrial Zone, Ningbo, China. The event was launched to further enhance product stability and meet growing global demand for high‑strength structural fasteners. During the meeting, the team reviewed production processes, heat treatment controls, and inspection procedures, and finalized a new round of technical upgrades for heavy hex bolts, ASTM A563 nuts, and threaded rods. Led by senior engineers and production supervisors, the company will strengthen raw material testing and batch tracking to ensure full compliance with ASTM, ISO, DIN, and ANSI standards. This initiative aims to support stable delivery for overseas customers in North America, Europe, and the Middle East while strengthening the company’s reputation as a reliable China fastener supplier.

Self Drilling Screw is a type of fastener that can drill its own hole while being screwed into a material. It eliminates the need for pre-drilling, which can save a lot of time and effort during construction and installation processes. Self Drilling Screws are commonly used in the construction, mechanical, and electronics industries.

We've all been there. That moment of dread when a Self Tapping Screw strips, snaps, or just won't budge. As someone who has worked in the fastening industry for over two decades, I've seen countless projects stalled by this single, frustrating issue.

6.3x20.6x73x32mm stainless steel self tapping lag eye screw can be applied in many fields, and more and more people are choosing it.

DIN7337 Flat head aluminum blind rivet is a special type of rivet that combines the characteristics of flat head design and blind rivet, and is widely used in various industrial and civilian fields.Flat head aluminum blind rivets have become an indispensable fastener in many industries due to their convenience in single-sided construction, high-strength connection, fast installation speed, good seismic resistance and clamping force, beautiful appearance, and excellent corrosion resistance.