What Are Socket Screws?
Socket screws are threaded fasteners characterized by a hexagonal recess in the head. The recessed head allows for effective tightening using Allen wrenches or hex keys. Socket screws are ideal for applications with limited clearance to use standard screwdrivers. The recessed design allows for increased torque application and minimizes the risk of cam-out.
Key Characteristics
Socket screws are characterized by:
- Hexagonal recessed drive
- Fully or partially threaded shafts
- Enhanced resistance to cam-out
- Minimal space requirements
Common Types
Some common types of socket screws include:
What Are Socket Head Cap Screws?
Socket head cap screws are a subtype of socket screws that feature a cylindrical head height equal to the nominal diameter and an internal hex socket drive. For sizes ¼-inch and larger, the head diameter typically measures one-and-a-half times the nominal diameter. Socket head cap screws with ½-inch diameter and above often come fully threaded. These fasteners are often used in assemblies with counterbored holes.
Other Names
These screws can also be known as:
- Allen head cap screws
- Hex socket head screws
- Allen drive cap screws
- Hex cap screws
- Hex socket head cap screw
- Hex socket head screw
Industries and Applications
Socket head cap screws, especially those made from exotic alloys, offer reliable fastening in industries that demand high performance.
Aerospace
The aerospace sector requires lightweight and durable screws that withstand extreme temperatures, pressure and mechanical stress. Hex cap screws provide exceptional torque resistance and stability for aircraft components.
- Applications: Aircraft engine assemblies, structural panel connections, avionics enclosures
- Materials: Titanium alloys, Inconel®, aerospace-grade stainless steel
Electronics
Socket head cap screws’ compact design and high-torque fastening make them ideal for electronics where space is limited.
Medical
Hex socket head screws offer biocompatibility and reliable performance for critical medical devices.
- Applications: Surgical instruments, diagnostic equipment, orthopedic implants
- Materials: Titanium, 316 stainless steel
Tips for Purchasing
Follow these guidelines when specifying your Allen drive cap screws for the best results:
- Check dimensions thoroughly: Select the correct nominal diameter, thread pitch, length and head diameter by referring to our dimensioning table above.
- Specify material accurately: Choose materials that match the environmental conditions and mechanical demands of your project.
- Choose the correct thread type: Pick fine threads for higher tensile and shear strength and coarse threads for quicker assembly and softer materials.
Contact Nickel Systems for Top-Tier Socket Head Cap Screws
Nickel Systems is a true stocking distributor of socket head cap screws made from exotic-grade alloys. Thanks to our custom manufacturing capabilities and rapid shipping, we fulfill your requirements efficiently and accurately. Request a quote today, and our team will help you choose the ideal fasteners for your project.
