Non Standard Stainless Steel CNC Machined Special Shaped Nuts

Product introduction

Our factory specializes in the production of non-standard nuts, special-shaped nuts, and customized hexagonal nuts. We specialize in all-metal lock nuts, wheel hub lock nuts, and auto parts nuts. We can process and customize special-shaped nuts on demand. Relying on mature cold heading and CNC processing technology, we can develop various special-shaped nuts according to customer drawings and samples, getting rid of the restrictions of national standards. The product is widely adapted to automotive chassis, wheel hub assembly, engineering machinery and other scenarios. The locking structure is stable, resistant to vibration and loosening. It supports a variety of material selections, and the surface technology can be customized, with one-stop delivery from sample trial production to mass production. We are deeply engaged in the customization of non-standard fasteners, which can accurately match the special assembly needs of various types of equipment, and provide reliable customized special-shaped nut solutions for automobile companies and machinery manufacturers.

 

The external hexagonal double-step nut is a typical special-shaped nut. Its structural characteristics are: the external hexagonal head and the bottom are provided with two step surfaces of different diameters or heights. The double-step design can achieve precise positioning, limit stop or welding assistance function to prevent the nut from shifting or warping during assembly.

 

As a non-standard nut, the key breakthrough of this product is:

Step geometric parameters: step diameter, height, and transition fillet can be designed as required, which is a typical structure in customized special-shaped nuts.

Hex Drive Surface: Driven with a standard external hex wrench, compatible with a range of custom hex nuts

Double step function: the upper step is used for positioning, and the lower step is used for welding or support, realizing the integration of "positioning + fixing"

Compared with ordinary hexagonal nuts or single-step nuts, this product is completely developed for precision assembly conditions and is a high-frequency demand category in the field of customized special-shaped nuts.

 

Product design and features

Products include non-standard nuts, special-shaped nuts, customized hexagonal nuts, including all-metal lock nuts, wheel hub lock nuts, auto parts nuts, and customized special-shaped nuts;

Double-layer hexagonal special-shaped integrated structure, with built-in limit steps, no need for additional spacers, and higher assembly efficiency;

The all-metal locking structure design relies on thread deformation to achieve lasting anti-loosening, high and low temperature resistance, and does not rely on nylon plastic rings;

The hexagonal size, barrel length, and inner hole specifications can be adjusted to flexibly create customized special-shaped nuts to adapt to the installation space of automobile wheels and complex parts;

With strong bearing capacity, impact resistance and long-term vibration resistance, it is the preferred locking accessory for automotive parts nuts.

 

Materials and application fields

Optional materials

Medium carbon steel, alloy steel, stainless steel, etc., support quenching and tempering heat treatment to improve strength and wear resistance; blackening, galvanizing, Dacromet, mechanical galvanizing and other surface treatments can be customized.

Application areas

The core is used as a nut for automobile parts. Hub lock nuts are widely used in passenger cars and commercial wheel hub assemblies. Various types of non-standard nuts, special shape nuts, customized hexagonal nuts, and customized special shape nuts are widely used in new energy vehicle chassis, engineering machinery, rail transit, hydraulic equipment, and agricultural machinery equipment. They are suitable for high-intensity, continuous vibration working conditions. All-metal locking nuts are suitable for harsh working environments such as high temperature and oil pollution.

 

Quality control and certification system

Incoming material inspection: Spectral testing of raw materials to control the composition of steel materials;

Process control: cold heading forming, CNC machining, thread testing, heat treatment hardness testing, locking torque testing;

Finished product inspection: 90% full dimensional inspection, salt spray test, tensile strength test to ensure the stability of wheel hub lock nuts and auto parts nuts;

Compliance certification: Products comply with RoHS and REACH environmental standards, and material reports and test certificates can be provided;

Full traceability, samples of each batch of non-standard nuts are retained, and exclusive production files are established for customized special-shaped nuts and non-standard nuts.

 

Customized services

Support drawings/samples to develop non-standard nuts, special-shaped nuts, customized hexagonal nuts, and customized special-shaped nuts;

The shape can be adjusted as needed: hexagonal opposite sides, cylinder outline, step structure, internal thread specifications;

Customized performance: strength level, heat treatment process, anti-loosening structure (full metal locking structure);

The surface treatment can be selected on demand, adapting to industry standards for wheel hub locking nuts and auto parts nuts;

Support small batch samples to be sampled first, and the size and performance can be confirmed before mass production;

Both metric and inch threads can be processed to meet the procurement needs of domestic and foreign customers and adapt to the needs of Google's overseas buyers.

 

FAQ

Q: What is the difference between double step nuts and ordinary hex nuts?

A: Double-step nuts are non-standard nuts. Their step structure can achieve positioning, limiting or welding auxiliary functions, while ordinary hexagonal nuts are only single threaded connectors. The double-step design is particularly suitable for precision assembly scenarios that require customized hexagonal nuts.

 

Q: Can this nut be used for wheel hub locking?

A: Yes. Wheel hub locking nuts are usually special-shaped nuts with steps or tapered surfaces. Some models use a double-step structure with nylon washers to prevent loosening. We can customize special shape nuts according to vehicle model requirements.

 

Q: Does the step of the double-step nut have a locking function?

A: The steps alone do not have a locking function. If you need to prevent loosening, you can add deformed threads or pressure points to the threaded part, and upgrade to an all-metal locking nut. We can provide pressure point type all-metal locking nuts that comply with GB6185 standards.

 

Q: Can we produce double step nuts for welding?

A: Absolutely. In welding applications, the steps of the external hexagonal double-step nut can be embedded in the mounting support hole to prevent the nut from warping and thread burn during welding. This is a common application scenario for automotive parts nuts.

 

Q: What is the minimum order quantity?

A: The minimum quantity for the sample stage is 5,000 pieces, and the minimum order quantity is 50,000 pieces. Since the double-step structure requires special mold opening, it is a typical non-standard nut delivery process.

Non-Standard Special-Shaped Nuts

Knurled Cylindrical Or External Hexagonal Locking Screws And Nuts

Flange Bolts With Square Nuts

Square Anti Vibration Spring Nut With Built-In Spring Steel

Hexagon Nylon Insert Lock Nut

Type B Leaf Spring Nut