Products Description

Hexagon Flange Bolts - Product Grade B are standard fasteners that integrate the head of a hexagonal bolt with the flange structure. Product Grade B flange bolts are typically used in industrial and engineering applications with specific requirements for strength, stability, and assembly reliability, ensuring structural safety while also considering installation efficiency and cost control. These bolts are widely used in machinery, building structures, electronics, furniture manufacturing, and industrial assembly systems to fasten components, distribute pressure on connection surfaces, and prevent loosening. They are a commonly used and mature fastening solution in engineering procurement and equipment manufacturing.

Core Product Properties and Features

Integrated Structural Design

Utilizing an integrated hexagonal head and flange structure, it achieves large-area pressure bearing without the need for additional gaskets. This simplifies assembly and prevents fastening failures caused by lost or misplaced gaskets, structurally ensuring connection stability for Head Bolts with Washers.

Accuracy Compliance

Strictly adhering to Class B accuracy standards for Washer-mounted Hexagon Head Screws, thread accuracy, dimensional tolerances, and geometric tolerances all meet international standards, ensuring precise engagement with nuts and threaded holes and preventing loosening or assembly difficulties due to accuracy deviations.

Superior Pressure Bearing and Anti-Slip Performance

The flange bottom for Hex Head Screws with Washers Attached is typically designed with anti-slip serrations (or a smooth surface). During tightening, this increases friction with the connecting parts' surfaces, effectively dispersing tightening pressure and preventing bolt loosening under vibration conditions, while also avoiding damage to the connecting parts' surfaces.

High efficiency and convenience

The external hexagonal head structure is compatible with general-purpose hex wrenches, sockets and other tools, and has high torque transmission efficiency. Whether it is manual assembly or automated batch assembly, it can achieve efficient operation and is suitable for large-scale production and on-site maintenance scenarios.

Hex Head Screws with Washers Attached

Core Technological Features and Precision Manufacturing Processes

Multi-station Cold Forging Technology

The bolt shank and integrated flange head are typically formed in one step using a high-speed multi-station cold forging machine. This process allows metal grains to flow along the Flange - Adorned Hexagon Head Screw shape, significantly improving the shear strength and fatigue life of the transition area between the head and shank. Material utilization is extremely high, and product dimensional consistency is excellent.

Precise Heat Treatment Process

For Grade B requirements for Hex Head Screws with Washers Attached, we implement precise quenching and tempering heat treatment (quenching + tempering). This not only ensures the product achieves the specified mechanical properties (such as tensile strength, yield point, and elongation), but more importantly, it eliminates internal stress, optimizes the bolt's toughness and impact resistance, and prevents brittle fracture during use.

Thread Roller Forming

Threads are manufactured using a high-precision rolling process. Rolling causes work hardening at the thread root and forms continuous, dense metal flow lines, resulting in significantly improved fatigue resistance compared to machined threads. Thread precision grades typically meet or exceed the 6g standard, ensuring smooth engagement for Washer-mounted Hexagon Head Screws.

Production Process of Screw Terminal and Hexagon Flange Bolts - Product Grade B

Application Advantages

Machinery Manufacturing

Suitable for fastening components in machine tools, construction machinery, and general machinery. The anti-slip and anti-loosening properties of the Head Bolts with Washers ensure the stability of the fastening during equipment operation.

Construction Engineering

Used for steel structure connections for Washer-mounted Hexagon Head Screws, door and window installation, and fixing of decorative components. Surface treatments suitable for outdoor environments enhance corrosion resistance and adapt to harsh working conditions such as wind and rain.

Electronics and Electrical Appliances

Used for internal fastening of home appliances, communication equipment, and precision instruments. Miniaturized specifications precisely adapt to the compact structure of equipment, ensuring assembly accuracy for Hex Head Screws with Washers Attached.

Application of Hexagon Flange Bolts - Product Grade B