China Heavy Hex Fastening Bolts Manufacturers, Suppliers, Factory

Galvanized High Tensile Double End Stud Bolt covers complete metric specifications from M6 to M64, and supports customized production of non-standard lengths according to pipeline design drawings provided by engineering buyers

DIN934 Hexagon Nut Carbon Steel Stainless Steel Hex Nut strictly follows German industrial standard production, with unified thread pitch, precise tolerance and 100% interchangeability.

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.

Think of a Self Drilling Screw as a specialized drill bit and a sturdy fastener combined into one elegant tool. The point, or tip, is the business end of the operation. Its design dictates what materials it can penetrate, how quickly it drills, and how securely it fastens. Let's break down the most common point types you'll encounter.

Set Screws is a type of fastener, which is often used to prevent the axial movement of a rotating part. It is a threaded rod with a head that is usually hexagonal or square-shaped.

Zinc Plated Slotted Pan Head Machine Screws can be manufactured according to ISO 10642, ANSI B18.6.3 and ASTM F1941 standards. Buyers can ask suppliers to provide relevant test reports to verify whether finished goods meet the agreed standards before bulk orders