Custom-Made Special-Shaped Nuts

The stainless steel external hexagonal stepped nut is a high-strength anti-loosening fastener. It is made of 304/316 stainless steel and has excellent corrosion resistance. The external hexagonal design makes it convenient for tool tightening operation and also increases the contact area, effectively preventing loosening. It is suitable for mechanical equipment in vibration environments, automotive manufacturing, rail transportation and other fields, providing stable and reliable tightening solutions. It supports various specifications from M6 to M100, and the surface can be treated with passivation, nickel plating, etc., to meet different working conditions.

Product Features:

1. High-strength anti-loosening structure: The external hexagon head design facilitates tool application and provides higher torque-bearing capacity.

2. High-quality stainless steel material: Made of 304/316 stainless steel, it has excellent corrosion resistance and passes the salt spray test, suitable for harsh environments such as humidity and acid-base conditions.

3. Wide applicability: The thread specifications cover M6-M100. The surface can be treated with passivation, nickel plating, etc., in compliance with international standards such as ISO/DIN.

4. Special customization service: Supports non-standard size customization. Special materials and surface treatment solutions can be provided. Small batch sample orders are accepted.

Product Applications:

1. Industrial Machinery: Fixing of large machine tool bases, connection of heavy transmission systems, tightening of vibrating screening equipment, connection of hydraulic system pipelines

2. Automotive Manufacturing: Fixing of engine brackets, connection of chassis components, installation of transmission gearboxes, key parts of suspension systems

3. Rail Transit Engineering: Assembly of high-speed train bogies, connection of vehicle body structures, fixation of signal equipment, support structure of contact wires

4. Energy and Power Industry: Assembly of wind power generation units, fixed installation of transformers, connection of transmission towers, tightening of nuclear power equipment

5. Construction Engineering: Connection of steel structure nodes, support system of curtain walls, fixation of bridge expansion joints, anchoring of heavy equipment foundations

6. Special Equipment Manufacturing: Ship power systems, aerospace components, assembly of military equipment, oil drilling and extraction equipment

Product Advantages:

1. High-strength fastening performance: Made of 304/316 stainless steel, with tensile strength exceeding 700 MPa. The hexagonal head design provides better torque transmission efficiency and the stepped structure enhances axial load-bearing capacity.

2. Precise mechanical processing: CNC numerical control lathe processing, with dimensional accuracy of ±0.02mm and thread accuracy of grade 6g, ensuring perfect fit. Surface roughness Ra ≤ 0.8 μm.

3. Excellent anti-loosening performance: The stepped design forms a mechanical self-locking structure, maintaining stable fastening even in vibration environments. It does not loosen after 10,000 vibration tests.

4. Compact space advantage: Without flange disc design, it saves installation space and is suitable for installation in restricted spaces. The thickness is reduced by 15-20% compared to ordinary nuts.

5. Professional surface treatment: Available options include passivation and electrolytic polishing. Salt spray test passes for more than 96 hours, with surface hardness HV ≥ 350.

6. Wide applicability: Working temperature range is -60°C to 300°C, compliant with international standards such as ISO and DIN, suitable for all types of high-strength bolts.

7. Quality assurance system: 100% size inspection, material spectral analysis, and mechanical performance testing for each batch.

FAQ

Q1: Compared with traditional hexagonal nuts, what are the advantages?

A1: Structural advantages: The stepped design provides better axial support, avoiding single-point stress

Anti-loosening performance: The mechanical self-locking structure has an 50% improvement in anti-loosening effect compared to ordinary nuts

Space optimization: The thickness is reduced by 15-20%, suitable for compact space installation

Q2: How is the anti-loosening performance guaranteed?

A2: Step mechanical locking: forms a secondary anti-loosening structure

Precise thread matching: 6g grade thread accuracy ensures tight engagement

Optional supplementary measures: can be used in conjunction with anti-loosening sealant

Q3: Do you support non-standard customization?

A3: Yes, we support special diameters/heights. We can provide special alloys and develop special processes as per customer requirements.

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