High Purity Tungsten Screw
Purity:≥99.95%
Density:≥18.2 g/cm³
Size:M8 x 60mm
Melting Point:3410℃
Tensile Strength:900-1200MPa
Hardness:HRC 25-35
Surface:/cm³
Size:M8 x 60mm
Melting Point:3410℃
Tensile Strength:900-1200MPa
Hardness:HRC 25-35
Surface:Alkaline cleaning/grinding/polishing
Standard:DIN 933
Delivery Time:30 DAYS
Certification:ISO 9001
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Product Details ofHigh Purity Tungsten Screw
Overview
High Purity Tungsten Screw is often used with nuts as high-performance fasteners or counterweights in aerospace, automobile manufacturing, petrochemical, marine engineering, electronic devices, sporting goods, etc. They have excellent physical and chemical characteristics, such as high-temperature resistance, corrosion resistance, ultra-high hardness, strong deformation resistance, non-magnetism, and high dimensional accuracy, and are especially suitable for high-temperature, nuclear radiation, heavy-load, and precision special working conditions.
FANMETAL can also provide customers with customized tungsten rods, tungsten plates, and tungsten alloy products. If you want to know the detailed price and delivery time, please feel free to contact us by email. We guarantee to respond to customers' needs within 24 hours.
Tungsten Screw properties
thread Structural advantages
The external hexagonal surface has a large load-bearing area and stable torque transmission. The full-thread contact area reduces the likelihood that the bolt will become stripped, loose, or broken under long-term heavy loads. It is compatible with nuts and accessories of the same standard worldwide and can be easily installed and removed using conventional hex wrenches, making it convenient for engineering replacements.
01
high-temperature mechanical stability
It has a low coefficient of thermal expansion, does not soften, creep, or melt at long-term high temperatures, and has a longer service life than stainless steel screws or titanium alloy bolts. The high-temperature cold-and-hot cycle almost does not cause deformation, and the thread fit accuracy does not fail. Moreover, it demonstrates exceptional resistance to chemical corrosion, making it suitable for use in harsh environments where exposure to aggressive chemicals is common.
02
Outstanding wear resistance
High yield strength, anti-extrusion, anti-wear, anti-scratch, long-term high-torque fastening is not easy to slip; the head is especially under high-pressure working conditions, and it has excellent structural stability. This makes it ideal for use in various industrial applications where durability and reliability are paramount. Its ability to withstand high torques without slipping further adds to its versatility, making it a preferred choice for engineers and technicians alike.
03
Excellent chemical stability
It is resistant to acid and alkali, molten metal corrosion, atmospheric oxidation, and water vapor erosion at room temperature or high temperature. Especially in the high-temperature vacuum environment, the vapor pressure is extremely low, almost non-volatile, does not pollute the furnace cavity and vacuum devices, and is suitable for vacuum furnaces and high-temperature vacuum equipment.
04
Products Description
The DIN 933 standard is a technical standard for fully threaded hex head bolts formulated by the German Institute for Standardization, which specifies the size, tolerance, and performance requirements of metric ordinary threaded Hexagon head bolts with specifications from M1.6 to M52, and is suitable for machinery manufacturing, construction, industrial equipment, and other fields.
application
1. Vacuum furnace and high-temperature furnace
DIN 933 Tungsten Screws can be used in high-temperature sintering furnaces, vacuum heat treatment furnaces, and refractory metal heating equipment for a long time, and can stabilize the thermal insulation screen, heating components, and lining structures in the furnace. The thread fit remains precise and stable under hot and cold cycling conditions.
2. Medical equipment
With the excellent γ and X-ray shielding properties of high-purity tungsten, as well as the characteristics of non-toxic, environmentally friendly, and lead-free, Tungsten Nuts and Bolts are often used for structural fastening of internal components of nuclear medicine equipment, radioactive storage containers, radiation protection shielding devices, and radiotherapy equipment.
3. Semiconductor and precision coating industry
It is widely used in the fastening and assembly of internal components of ultra-high vacuum chambers, semiconductor equipment, and sputtering coating devices, and will not release impurities to pollute the chamber environment during use. There is no problem of coating peeling and metal precipitation, which can meet the strict clean assembly and use requirements of high-end precision equipment.
4. Strong corrosion chemical field
High Purity Tungsten Screw can be used in all kinds of highly corrosive chemical equipment and special media operating conditions, which can resist the erosion of acid and alkali gases, corrosive liquids, and high-temperature molten substances, and is not easy to oxidize and rust, maintain a strong connection in a harsh corrosive environment, and has a service life much better than ordinary metal fasteners.
5. Precision mechanical counterweight and special equipment field
Tungsten Screw can take into account the precision counterweight needs of equipment while fastening the fixed parts, and is mostly used for precision instruments, special machinery, and high-speed operation mechanisms that cannot increase the structural volume in a small space.
FAQ
Q: What sizes of DIN 933 tungsten screws do you offer? Can it replace ISO 4017?
A: Our tungsten hex head bolts are produced in strict accordance with DIN 933 (fully threaded) standards, with common specifications ranging from M3 to M20. Due to the high interchangeability of DIN 933 and the international standard ISO 4017 in terms of geometric dimensions, our products can be used directly in high-precision equipment that requires ISO standards. In addition, we offer matching nuts and washers to ensure a consistent coefficient of thermal expansion of the overall fastening system.
Q: Can you provide custom-sized tungsten screws?
A: Yes, we can provide customized tungsten bolts. Besides our standard DIN933 tungsten screws in regular sizes, we support full custom production according to your drawings and detailed size requirements, including non-standard length, diameter, thread pitch, and special tolerance. Matching tungsten nuts can also be customized in the same material at the same time.
Q: Should I choose pure tungsten (W1) or tungsten-nickel-iron (WNiFe) alloy screws?
A: It depends on your main requirements:
- High Purity Tungsten Screw: Suitable for semiconductor equipment that requires extremely high purity or for ultra-high temperature environments above 1700°C.
- High-Density Tungsten Alloy Screws: Contain nickel, iron, or copper, which lowers the melting point slightly compared to pure tungsten. However, they offer better machinability, toughness, and mechanical strength. They are also easier to disassemble without breaking and are the preferred choice for radiation shielding, counterweighting, and general industrial applications at high temperatures.
Q: How can one prevent tungsten screws from breaking during installation? How should their brittleness be addressed?
A: Since tungsten is a refractory metal, it has a high degree of brittleness at room temperature. During installation, it is essential to avoid using pneumatic tools that exert excessive force. We recommend using a manual torque wrench to apply the force evenly. Additionally, in the design of the fasteners, we optimize the R-angle at the base of the thread to reduce stress concentration, thereby significantly extending their service life in complex vibration environments.
Q: Do you provide MTC (Material Test Certificates) with the order?
A: Yes, we provide MTC with every order, detailing chemical composition, mechanical properties, heat treatment, etc., ensuring traceability and compliance.
Q: What's your delivery time?
A: Our shipping method is mainly by air or sea. After the product is finished, we will use wood, plastic, or carton boxes for tight packaging, and also put some soft materials to prevent product damage. We will deliver it to you as soon as possible, within 20-30 days.
Shipping Case
High Purity Tungsten Screw, DIN933 Tungsten Screws To the Czech Republic
Recently, our company collaborated with a Czech client on a batch of custom tungsten screws. These screws are used to secure core components in high-end equipment, requiring stringent conditions for high-temperature resistance, strength, and precision. FANMETAL, with its mature tungsten alloy processing technology and one-stop service, stood out from the client's pool of potential suppliers. Following delivery, the client highly praised the product quality and service efficiency and expressed a desire for long-term cooperation.
Quality & Service
FANMETAL TECH CO LTD
FANMETAL TECH CO LTD is mainly engaged in the production and sales of tungsten alloy, molybdenum alloy, cemented carbide, sputtering target, titanium alloy, zirconium metal, Iridium, and Stellite.
We also have the following processing equipment to meet the high-quality customization needs of our customers.
Sintering furnace, forging machine, rolling machine, EDM machine, CNC machine, sheet metal processing, laser machine, lathe machine, grinding machine, hardness testing equipment, three-coordinate testing equipment
01
Respond to customer inquiries.
After receiving the customer's inquiry, we will reply within 24 hours to confirm the specific specifications and grades of the product required by the customer.
02
Quotation and production
We quote according to the quantity and size given by the customer. If you are satisfied with the price, we will send an invoice to the customer for payment, and then we will go directly to the production stage.
03
Shipping and After-sales Service
We'll inspect quality before delivery. If there's a problem after receipt, we'll replace it free during the warranty to reduce your losses.
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