Stainless Steel External Hexagonal Hollow Non-Standard Screws

Product introduction

We provide professional stainless steel external hexagonal hollow screws, which are made of high-quality stainless steel and are corrosion-resistant and durable. The product specializes in non-standard customized screws and can develop various types of special-shaped screws according to needs. From head shape to stem features, whether it's non-standard screws or special wall thicknesses, we can custom-make them according to drawings. Strict quality inspection, reliable performance, widely used in electronics, machinery and other fields to meet your personalized fastening needs.

 

Product design and features

This series of products focuses on stainless steel external hexagonal hollow screws. Its core design lies in the unique "external hexagonal head + hollow stem" structure. This design not only retains the convenience of traditional external hexagonal screws that can apply high torque through tools such as wrenches and sockets, but also achieves multiple functions of weight reduction, threading, diversion or use as assembly pins through the hollow structure of the stem.

 

In the field of non-standard customization, we know that standard parts cannot meet the needs of all complex working conditions. Therefore, our design team is good at developing various types of special-shaped screws based on the customer's equipment space constraints, force analysis and assembly environment. For example, we can adjust the size of the opposite sides of the hexagonal head, change the wall thickness of the hollow rod, or add special shapes such as through holes and steps on the rod to ensure that the screws achieve the best locking effect and space utilization in specific applications.

 

Materials and application fields

Stainless steel screws are the cornerstone of this product. We mainly use high-quality stainless steel raw materials, which have excellent corrosion resistance and oxidation resistance. They can be used for a long time in harsh environments such as moisture, acid and alkali without rusting, which greatly extends the service life of the equipment.

Commonly used materials: SUS304 (universal type, good rust resistance), SUS316L (high-grade medical/marine grade, stronger acid and chlorine corrosion resistance).

 

Application areas:

Electronic and electrical appliances: as insulating supports or internal structural connectors.

Mechanical equipment: used for oil and gas pipeline connections, or as bolts with holes for mechanical locking.

Furniture hardware: disassembly and assembly connectors for high-end furniture, taking into account both beauty and strength.

Aerospace and medical: These high-precision fields often require non-standard customized screws to meet the strict requirements of lightweight and high cleanliness.

 

Quality control and certification system

For non-standard screws and screws with special shapes, quality control is the top priority in production. Since there are no ready-made national standards for non-standard parts to follow, we have established a strict internal corporate standard (QC) system:

Raw material inspection: All stainless steel materials entering the factory are analyzed by a spectrometer to ensure the purity of the material.

Molding monitoring: A multi-station cold heading machine is used for one-time molding. For the special heads or hollow structures of non-standard customized screws, 100% dimensional tolerances are detected through an optical image filter.

Mechanical performance test: In view of the problem that hollow structures are prone to insufficient wall thickness and strength, we conduct hardness tests, tensile tests and salt spray tests to ensure that the screws are not only "special in shape" but also "reliable in performance".

Certification system: The company has passed ISO 9001 quality management system certification, and its products comply with RoHS environmental directive standards, ensuring that every stainless steel hexagonal hollow screw shipped from the factory is traceable.

 

Customized services

We provide a full range of non-standard customized solutions and are committed to solving customers' non-standard parts procurement problems. If you can't find suitable specifications, please contact us with drawings or samples.

Customization range:

Head shape: In addition to standard external hexagonal screws, screws with special shapes such as hollow internal hexagonal heads, semicircular heads, and countersunk heads can be customized.

Rod features: Non-standard screw knots such as through-hole diameter, single-side opening, knurled rod, shrinking rod, etc. can be customized.

Thread specifications: metric (M2-M100), inch, American and fine threads can be customized.

Length and diameter: no inventory restrictions, production on demand.

Minimum order quantity: Supports small and medium-sized batch customization to meet the needs of R&D proofing and small-scale mass production.

 

FAQ

Q: What are non-standard custom screws? What is the difference between it and standard parts?

A: Non-standard custom screws refer to screws manufactured according to the customer's specific drawings or samples. Their shape, size, material or thread are different from national standards (GB) or international standards (ISO/DIN). Standard parts are universal parts, while non-standard parts are "tailor-made" for specific equipment and can perfectly fit special structures, such as specially shaped screws with special steps on the stem.

 

Q: Will the hollow rod of the stainless steel external hexagonal hollow screw break easily?

A: No. As a professional non-standard screw manufacturer, we will calculate the optimal wall thickness allowance based on your force requirements during design. Hollow structures are usually used in lightweight or functional scenarios, and their strength can fully meet design requirements. If heavy loads are required, we will recommend solid or thicker wall solutions.

 

Q: Can you produce non-standard screws with special lengths? How long does it take for delivery?

A: Absolutely. Non-standard custom screw lengths are one of our most common customization items. The production cycle for conventional non-standard products is usually 7-15 days (depending on the quantity and process complexity).

 

Q: Are these stainless steel screws easy to rust?

A: We use high-quality stainless steel, such as SUS304, which has good anti-rust and anti-corrosion properties. However, please note that stainless steel is not "rust-free", but is resistant to rust in normal environments. If used in extremely harsh environments, we recommend using SUS316L material or enhancing its protective performance through surface treatment (such as passivation).

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