Custom TC4 Gr5 Titanium 12 Point Flange Nut with Reliable Quality For Motorcycle

Description

What is a 12 Point Flange Nut?

A 12-point flange nut is a specialized type of fastener that combines two key features: a 12-point (double-hexagon) head and an integrated flange. The 12-point head allows for a higher torque application compared to a standard 6-point hex nut, as it can be engaged by a wrench from twice as many angles (every 30 degrees). This design is common in high-stress and aerospace applications. The integrated flange is a wide, flat bearing surface at the base of the nut. This flange distributes the clamping force over a wider area, which helps to protect the surface of the material being fastened, reduces seating stress, and often eliminates the need for a separate washer.

Materials of 12 Point Flange Nut

• Alloy Steel: The most common material, typically grades 8, 10, or 12. It offers high strength and is suitable for most heavy-duty applications.

• Stainless Steel: Grades like 304 and 316 are used for their excellent corrosion resistance, making them ideal for marine, chemical, and food processing environments.

• Aircraft-Grade Alloys: Materials such as A286 superalloy or Inconel are used in aerospace for their high strength-to-weight ratio and resistance to extreme temperatures and corrosion.

• Brass or Bronze: Used in specific applications requiring non-magnetic properties or corrosion resistance in certain environments, such as in marine plumbing.

Surface Treatments of 12 Point Flange Nut

• Zinc Plating: A common and cost-effective finish that provides good corrosion resistance. It can be clear (blue-bright), yellow (chromate), or black.

• Hot-Dip Galvanizing: A thick zinc coating for superior corrosion protection in harsh outdoor or industrial environments.

• Cadmium Plating: Offers excellent corrosion resistance and lubricity. Its use is declining due to environmental and health concerns but is still specified in some aerospace and military applications.

• Phosphate & Oil: Provides a corrosion-resistant and lubricious coating that is also a good base for holding paint.

• Passivation: A chemical treatment for stainless steel that removes free iron from the surface and enhances the formation of the natural chromium oxide layer, maximizing corrosion resistance.

• Dry Film Lubricant: Coatings like Xylan or PTFE are applied to reduce friction and prevent galling, especially in stainless steel fasteners.

Specifications of 12 Point Flange Nut

• Thread Size: Defined by standard systems like Unified (UNC/UNF) in inches or Metric (ISO) in millimeters (e.g., 1/2″-13, M12x1.75).

• Grade/Class: Indicates the material strength. Common grades include Grade 8 (SAE), Class 10.9 (Metric), or A286 (Aerospace).

• Dimensions: Key dimensions include the across-flats width of the 12-point head, the thread diameter and pitch, and the overall height. The flange’s outer diameter and thickness are also critical.

• Standards: Manufactured to meet various industry standards such as MS, NAS (Aerospace), AN (Air Force-Navy), ASME, or ISO.

Application Fields of 12 Point Flange Nut

• Aerospace: Critical for assembling aircraft engines, frames, and control systems where high strength, reliability, and vibration resistance are paramount.

• Automotive & Racing: Used in high-performance engines, drivetrains, and suspension systems where high torque and secure fastening are required.

• Heavy Machinery: Essential in construction, mining, and agricultural equipment that experiences high dynamic loads and vibrations.

• Industrial Equipment: Used in presses, turbines, pumps, and other machinery where flange nuts provide secure, stable, and durable connections.

• Military & Defense: Specified in vehicles, weapons systems, and equipment for their proven reliability under extreme conditions.

Excellent Use Case: High-Performance Racing Engine

In a high-performance racing engine, the cylinder head is subjected to extreme pressures and thermal cycles. A 12 point flange nut is the ideal choice for securing the cylinder head to the engine block.

The 12-point head allows mechanics to apply the extremely high and precise torque required for a perfect seal using a specialized 12-point socket, ensuring the head gasket is compressed uniformly without rounding the nut’s corners. The integrated flange distributes this massive clamping force evenly across the delicate aluminum surface of the cylinder head, preventing distortion and damage. This combination ensures a leak-proof seal that can withstand the intense conditions of a race, while also simplifying assembly by eliminating the need for separate washers, saving critical time during a pit stop or engine rebuild.