Din917 Stainless Steel Hex Cap Nut Acorn Nut Dome Nut Cone-shaped Nuts

This series of stainless steel cap-shaped nuts (also known as round-head cap-shaped nuts or decorative protective nuts) is a multi-functional fastener that integrates thread locking, end protection, and appearance beautification. The main body is made of 304 stainless steel and is formed as a single piece. The hexagonal side is compatible with standard wrenches, and the top features a rounded and closed cover design. It can completely cover the exposed end of the bolt while achieving thread locking, providing three functions of anti-scratch, anti-corrosion, and appearance beautification. It is the preferred fastener for exposed connection scenarios that balance practicality and aesthetics.

The product is formed through precise cold heading technology, and the internal threads are processed by CNC tapping. The tooth shape is regular, and the tolerance is strictly controlled. It is perfectly compatible with standard metric bolts. The stainless steel material is naturally resistant to salt fog and corrosion, suitable for humid, acidic, alkaline, and outdoor complex working conditions. No additional coating is required, and it will not rust or corrode over a long period of use. It is widely used in various exposed assembly scenarios such as furniture, equipment, and outdoor facilities.

Core structure: The side of the hexagonal nut is integrated with a rounded and closed cover head. The cover head wraps around the end of the bolt, serving functions of locking, protection, and decoration.

Material configuration: 304 stainless steel material, with surface passivation treatment, naturally resistant to rust and corrosion.

Specification coverage: Complete range of thread specifications including M3, M4, M5, M6, M8, M10, and M12, suitable for standard metric bolts.

Performance: Corrosion-resistant, scratch-resistant, neat and tidy appearance, stable engagement, suitable for exposed connection scenarios.

Installation compatibility: Compatible with regular wrench tools. The installation method is the same as that of ordinary hexagonal nuts, and it can be directly replaced without the need for additional assembly solutions.

Dual functions of protection and decoration, achieving two benefits with one action.

The rounded and closed top cover can completely enclose the exposed end of the bolt, not only preventing sharp edges from scratching the workpiece or the human body, but also covering the messy threads, making the connection part neat and beautiful without the need for additional decorative caps. This simplifies the assembly process and also has a locking function, achieving two benefits.

Stainless steel with inherent rust prevention, suitable for complex working conditions.

It is made of 304 stainless steel, with a chromium content of 18%-20%, and the surface is treated with passivation to form a dense oxide film. It is resistant to salt fog, acid and alkali corrosion, and is not afraid of outdoor sun exposure, rain, coastal high humidity salt fog environment. It does not rust or corrode over a long period of use, significantly reducing the cost of later maintenance and replacement.

Precise thread processing, stable engagement without slippage

The internal thread is formed by CNC tapping process, with regular tooth shape and strict tolerance control, perfectly matching standard metric bolts, and the tightening is smooth without jamming. It still maintains stable engagement performance after repeated assembly and disassembly, not prone to slippage or disengagement, ensuring the reliability of the connection.

One-piece molding process, strong and durable

The nut body is formed by cold forging one-piece molding, without welding or splicing. The strength of the hexagonal side and the cover head is uniform and stable, with tensile and shear performance meeting standards. It is not likely to break or deform during long-term use, ensuring the safety of the connection part.

Installation is convenient, direct replacement of ordinary nuts

The hexagonal side is compatible with common wrench tools, the installation method is exactly the same as that of ordinary hexagonal nuts, no additional tools or modification of the assembly plan is required, it can directly replace ordinary nuts, with high adaptability and no additional learning costs.

Multi-specification coverage, strong versatility

The thread specifications cover M3-M12, suitable for most standard metric bolts, no additional customization is required to replace ordinary nuts, suitable for various scenarios such as furniture, equipment, and outdoor facilities, reducing the cost of component procurement and inventory.

Furniture and Hardware Assembly Scenario

For the exposed bolt connection parts of furniture such as tables, chairs, cabinets, and bed frames, the cap-shaped nuts can cover the threaded ends, eliminating sharp edges and corners, preventing scratches to users, and enhancing the overall aesthetic appeal of the furniture. The stainless steel material is suitable for humid environments such as those in kitchens and bathrooms, providing corrosion resistance and preventing rust.

Equipment and Cabinet Exposed Connection Scenario

For the exposed bolt connections of industrial equipment and cabinet chassis, the cap can prevent dust and moisture from entering the threaded gaps, and also avoid the bolt ends from scratching the operators. The stainless steel material is suitable for humid and oily environments in workshops, ensuring long-term stability and reliability.

Outdoor Facilities and Engineering Scenario

For the exposed connection parts of railings, supports, and outdoor equipment, the stainless steel main body is resistant to salt fog corrosion, and the cap isolates from wind and rain erosion, preventing the bolt ends from rusting, and avoiding damage from external impacts, thereby extending the service life of outdoor facilities and reducing subsequent maintenance.

Automobile and Transportation Scenario

For the exposed bolt protection of the vehicle body and chassis, the cap can prevent the bolt ends from being damaged by sand and stones, and also isolate from water vapor corrosion. The stainless steel material is suitable for complex working conditions during vehicle operation, providing both protection and aesthetic effects.

General Machinery and Decoration Scenario

For various scenarios that require exposed threaded locking and have requirements for appearance and safety, such as small machinery, display stands, and decoration projects, it is possible to directly replace ordinary nuts, balancing the locking function and appearance tidiness, without the need for additional customization.

Q1: Can the cap of the nut be removed easily?

A: In most cases, the cap is designed to be a permanent part of the nut and is not intended to be removed easily. However, some cap nuts may have a removable cap for specific applications. If you need a cap nut with a removable cap, please contact our sales team for more information.

Q2: What is the maximum torque that the cap nut can withstand?

A: The maximum torque that a cap nut can withstand depends on its size, material, and design. Please refer to our product specifications for the specific torque ratings of the cap nut you are interested in. It is important to use the appropriate torque when tightening the nut to ensure a secure connection.

Q3: Are your cap nuts available in custom colors?

A: Yes, we offer custom color options for our cap nuts to meet your specific aesthetic requirements. Please contact our sales team to discuss your color preferences and any additional requirements for your order.

Q4: Can cap nuts be used in high-temperature applications?

A: The suitability of cap nuts for high-temperature applications depends on the material of the nut. Some materials, such as stainless steel, can withstand higher temperatures, while others may be limited. Please consult our product specifications or contact our technical support team to determine if our cap nuts are suitable for your specific high-temperature application.