Other Fastener

Sanwei:Your Professional Other Fastener Manufacturer!

Hebei Sanwei Fasteners Co., Ltd. is a high-tech enterprise specializing in the research, development, production, and sale of fasteners, located in Hebei Province, China. Since its establishment,wei has been committed to providing customers with high-quality, high-performance fastener solutions, which are widely used in various fields such as construction, machinery manufacturing, automobile, and power communication.

Expansion Hook Screws
Name: Expansion Hook Screws. Material: carbon steel, alloy steel and stainless steel, etc.. Grade: Grade 4.8, Grade 5.8, Grade 8.8, A2-70, etc.. Nominal Diameter: M2-M30
Water Heater Expansion Hook Screws
Name: Water heater expansion hook screws. Material: carbon steel and alloy steel, etc.. Grade: 4.8 grade, 5.8 grade, 8.8 grade. Nominal Diameter: M2-M30
Question Mark Type Screws
Name: Question mark type screws. Material: carbon steel and alloy steel, etc.. Grade: Grade 4.8, Grade 5.8, Grade 8.8. Nominal Diameter: M2-M48
Pointed Set Screws
Standard: DIN553. Name: Pointed set screws. Material: carbon steel and alloy steel, etc.. Grade: Grade 4.8, Grade 5.8, Grade 8.8
Black Set Screws
Standard: DIN916. Name: Black set screws. Material: carbon steel and alloy steel, etc.. Grade: Grade 4.8, 5.8, 8.8
Hexagon Socket Set Screws
Standard: DIN913. Name: Hexagon socket set screws. Material: carbon steel and alloy steel, etc.. Grade: Grade 4.8, Grade 5.8, Grade 8.8
Square Column Buckle
Name: Square and Round Buckle. Material: Carbon steel and alloy steel, etc.. Grade: Grade 4.8, Grade 5.8, Grade 8.8. Finish: ZP,YZ,BLACK
Turnbuckle
Standard: DIN1480Material: carbon steel and alloy steel, etc.Grade: Grade 4.8, Grade 5.8, Grade 8.8Nominal Diameter：M2-M48Pitch：0.4-5Surface treatment：ZP,YZAlias：Flower basket bolts, rigging screw
Steel Wire Clamp
Standard: DIN1142. Name: Wire Rope Catch. Material: carbon steel and alloy steel, etc.. Grade: 4.8 grade, 5.8 grade, 8.8 grade
Beam Clamp
Name: Beam Clamp. Material: Carbon steel and alloy steel etc. Grade: Grade 4.8, Grade 5.8, Grade 8.8. Surface treatment: ZP

Why Choose Us

OEM/ODM Service
Our customised fasteners are made to your special requirements. It can be fully threaded or partially threaded, and the thread, driving method, material, length, head shape, plating and all these can be specially designed according to your needs.

Good CNC machining technology
From material selection to finished products, Handan Sanwei provides you with comprehensive solutions when it comes to customised fasteners. The fasteners we make are high precision and strong. No matter what kind of precision you need, we can meet it and guarantee your satisfaction.

Strong engineering design team
Our company has an excellent and professional engineering team, and a number of technicians are elites in the industry. The staff always strives to explore new methods and technologies. From the selection of metals and special alloy materials to the finished fasteners, we can solve all aspects of the whole project engineering.

Professional Testing Laboratory
Quality assurance and testing is an important part of producing fasteners. Handan Sanwei has a specialised quality testing laboratory with spectrometers, hardness testers, tensile testers, salt spray test chambers and other equipment, where raw materials and final products are strictly tested. In addition, the company also has experienced testing experts who use professional methods to comprehensively test the fasteners and finally give you a detailed test report.

Digital Quality Control System
We rely on our self-developed full-process digital quality inspection system to strictly control every step from raw materials entering the factory to finished products being shipped. This system will always monitor the quality of the products to ensure that each batch of products meets the industry standards and complies with customer requirements. In addition, it collects and feeds back data in real time, giving you a clear understanding of product quality.

Types of Other Fastener

The other fastener produced by our company mainly include the following types:

Question Mark Type Screws
A question mark shaped screw is a unique screw construction whose main feature is the question mark shape. It has an irregularly shaped head, usually to fit a specific screwdriver or tool, preventing casual removal by ordinary tools. The working principle of question mark-shaped screws is similar to that of ordinary screws in that they are tightened through the rotation of the threads.

Name	Question mark type screws
Material	Carbon steel and alloy steel, etc.
Grade	Grade 4.8, Grade 5.8, Grade 8.8
Nominal Diameter	M2-M48
Finish	ZP,YZ,BLACK
Alias	Hook Screws, Sheep's Eye Screws, Lifting Ring Bolts

Hexagon Socket Set Screws
Hexagon socket set screws consist of a screw, nut, and hexagonal concave or flat end and are commonly used to clamp and fasten various components of mechanical equipment. The hexagonal concave end design allows the screw to be turned more easily and is also easier to tighten and loosen with tools. The design of the head of the hexagonal socket allows for a larger contact area between the wrench and the head of the screw during tightening, allowing for effective torque transfer. Compared to hexagon socket head screws, hexagon socket set screws have a tighter fit between the wrench and the head during tightening and are less likely to slip.

Standard	DIN913
Name	Hexagon socket set screws
Material	Carbon steel and alloy steel, etc.
Grade	Grade 4.8, Grade 5.8, Grade 8.8
Nominal diameter	M2-M30
Pitch	0.4-3.5
Surface treatment	ZP,YZ,BLACK
Alias	Hexagon socket head cap screws, machine meter screws

Advantages of Question Mark Type Screws

Suitable for compact spaces: Thanks to their unique question mark shape design, these screws are particularly suitable for use in compact spaces, offering greater flexibility and convenience.

Corrosion resistance: Usually made of stainless steel or nickel alloy, it features corrosion resistance and high strength, ensuring stability and durability in a variety of environments.

Wide range of applications: It can be widely used in aerospace, machinery manufacturing, electronic instruments, etc., especially in applications that require high precision and complex installation.

Advantages of Hexagon Socket Set Screws

Tight grip
One of the key benefits of hexagon socket set screws is their ability to provide a tight grip, which is important in ensuring that components stay securely in place. The hex socket design allows for easy and precise tightening with an Allen wrench. Additionally, the screws are often preferred for their flush fit, which means they don't protrude from the surface of the component, creating a clean, finished look.

Prevent sliding
The design of the hexagon socket can effectively prevent sliding. In the process of tightening or loosening the screw, due to the special shape of the hexagonal socket, the tool can fit more closely with the screw slot wall, preventing sliding caused by improper operation or loose tools. This not only improves the accuracy of the operation, but also reduces the safety risks caused by sliding.

Save space
The hexagon socket set screw also has the characteristic of saving space. Compared with the external hexagonal design, the hexagon socket set screw can be operated in a smaller space, which makes it particularly suitable for compact installation environments. In some mechanical equipment with limited space, the hexagon socket set screw can play its unique advantages and provide engineers with more design options.

Application of Question Mark Type Screws

Furniture Assembly

Commonly used in assembling tables, chairs, and cabinets, question mark type screws offer strong joints and stability.

Construction

Ideal for fastening drywall, studs, or other materials, providing structural integrity to buildings.

Automotive Industry

Utilized in vehicle assembly for securing various components, ensuring reliability and safety.

Electrical Fixtures

Used to install switches, outlets, and light fixtures, ensuring a secure fit that meets safety standards.

Application of Hexagon Socket Set Screws

Chemical Processing
Hexagon socket set screws in the chemical processing industry need excellent corrosion resistance in environments with harsh chemicals such as acids, alkalis and saltwater.
Applications: Pump components, joints in chemical reactors, and shafts and paddles in mixing environments with corrosive chemicals.

Aerospace
Because of their reliability and space-saving attributes, hexagon socket set screws are used in aircraft components where both space and secure fastening are critical.
Applications: Aircraft engines, structural components, gear assemblies, drive shafts and couplings.

Automotive
Hexagon socket set screws are used to secure numerous components in the automotive industry due to their strong resistance to vibrations.
Applications: Engine assemblies, knobs, throttle assemblies, levers and mirrors.

Electronics
Hexagon socket set screws enable nonintrusive clamping in delicate electrical assemblies. Their small size and strong grip are ideal for confined spaces, especially when precision is essential.
Applications: Circuit boards, connectors and housings.

Medical Equipment
Hexagon socket set screws are used to fasten and align various components within medical devices, ensuring stability and precision.
Applications: Surgical equipment, prosthetics, microscopes, CT scanners and X-ray equipment.

Manufacturing and Machinery
Hexagon socket set screws offer reliable fastening solutions for manufacturing and machinery, particularly in applications that require precise alignment and strong resistance to environmental and mechanical stresses.
Applications: Gears, pulleys, collars, shafts and couplings.

Packaging and Shipping

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FAQ

Q: I need a customized fastener, but it's not on your website. What do I do?

A: Please send us your request with detailed drawings or photos, then we will make the quotation for you accordingly.

Q: In general, how long can delivery be made after receiving an order?

A: Regular orders can be completed and shipped within 15-20 working days after receiving the deposit and confirming product details.

Q: During the product usage process, if we encounter technical problems, can you provide technical support?

A: Sure. We have a professional technical team that can provide you with technical consultation and guidance through methods such as telephone, email, or video conference.

Q: What is the packaging method of the product?

A: 50KG bag and pallet.

Q: What are socket set screws used for?

A: Set screws are sometimes called setscrews, socket set screws, or grub screws. They are a type of threaded fastener, most often used for securing components in place. This generally means affixing two or more loose parts to one another, for example by holding one component tightly against (or inside) a second surface.

Q: What is the difference between a hex screw and a set screw?

A: Set screws, also known as hex set bolts, are purpose-built for specific tasks. Unlike regular screws, they lack a traditional slot head. Instead, set screws typically feature a hex head.

Q: What is the difference between a socket screw and a set screw?

A: Socket screws are threaded metal screws with a hexagonal head that fit into screwdriver slots in most tools. Set screws are threaded, fastening screws that have threads only on one end of the shaft. They require an accompanying nut to secure them in place.

Q: What three 3 characteristics are designated for screws?

A: A screw is a common fastener that features a head, a shank, and threads. The shank of the screw can vary in diameter and length. The shank will feature spiraling ridges called threads on part or all of the shank. At the top of the shank is a larger portion that can be flat or domed, called the head of the screw.

Q: What keeps screws from loosening?

A: To stop screws from loosening due to vibration, you can and should use washers. Depending on the application, you can also consider screws designed to stand up to vibrations. If nylon is a good fit for your application, it's an excellent material for resisting vibrations.

Other Fastener - Hebei Sanwei Fastener Co., Ltd.

other fastener, Beam Clamp, Steel Wire Clamp

Sanwei:Your Professional Other Fastener Manufacturer!

Types of Other Fastener

Application of Question Mark Type Screws

Application of Hexagon Socket Set Screws

Packaging and Shipping

FAQ

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