Tungsten Socket Head Cap Screws

Ultra-high density & high temperature / strength stability

• High strength at extreme high temperatures (vacuum)
• Radiopaque to x-rays and other radiation
• Very high density of 19.3 gm/cc
• Excellent corrosion resistance
• Mechanical properties of tungsten screws
• Tungsten material datasheet

Tungsten socket head screws are an ideal material for high temperature stability. Their extremely high melting point of 3420°C, makes tungsten screws useful for some of the hottest vacuum furnace environments. Another attribute of tungsten is its extreme high density. The high mass of tungsten socket head cap screws make them radiopaque, allowing them to block radiation and show up well on x-rays – even better than lead. In addition, their high density also makes them ideal for balancing rotating parts. Beyond their high mass and temperature stability, tungsten screws are also very corrosion resistant.

Tungsten socket head cap screws are usually made from tungsten alloys per ASTM B777, and range from 90% to 97% pure tungsten, alloyed with nickel and copper or nickel and iron. Screws can also be made from Commercially Pure (CP) Tungsten.

Applications

• The heat treating / furnace industry uses tungsten socket head screws in high temperature vacuum furnaces due to tungstens great high temperature strength & stability.
• The oil & gas industry uses tungsten screws for radiation shielding properties to protect equipment used in oil and gas detection, as well as down hole logging for density and ability to withstand intense hydrostatic pressure
• Tungsten socket head screws also play a role in the medical community for their low magnetic properties as well as their radiopaque properties.
• The aerospace industry depends on the tungsten screws for their combination of high density and mechanical strength which allows them to reduce the physical size of components, offering greater control of weight distribution for propellers, inertial systems and fluid control systems to name a few.

Resources: Tungsten Torque Specs

Tungsten Screw Types:  Button Head Cap Screws, Flat Head Screws, Hex Head Cap Screws, Pan Head, Set Screws, Socket Head Cap Screws, Tamper Resistant Security Screws

Tungsten Socket Head Cap Screw Features and Benefits

When it comes to tungsten socket head cap screws, it’s all about clearance. These screws are the best choice for applications with limited installation access or clearance. Yet if you have an application with a lot of debris, you may want to select a tungsten hex head bolt or hex head cap screw, as they don’t have a socket drive which could get clogged.

Advantages:
•  Ideal for applications with limited access as they require very little clearance around the fastener.
•  Socket head cap screws can be used in locations where externally wrenched fasteners aren't desirable.
•  Weight reduction on application as tungsten socket head cap screws are smaller – being that the cylindrical heads of socket screws need less space than hex heads and require no additional wrench space.
•  Also known for safety, reliability and economy.

Tungsten Chemistry & Specifications

Tungsten Specifications: ASTM B777, Mil Spec T-21014D