Hex head cap screws feature a solid six-sided hexagon-shaped head which allows for greater torque than traditional screws. These common threaded fasteners do not require a nut for fastening and are designed to secure objects within or against other objects for a secure, non-loosening hold.
Hex head cap screws are versatile and can be used in a variety of applications. Due to their strength and durability, these fasteners are commonly used in construction, machine parts and maintenance repairs.
Available as either partially or fully threaded, Nickel Systems stocks hex head cap screws in a variety of materials and lengths starting at 1/4″ in diameter.
Check out our specifications & technical data for hex head cap screws. At Nickel Systems, we prioritize your specific project requirements. Use our dimensioning and specification data to select the right hex head cap screw for your next project below. If you don’t see your specific required size, please contact us. We can supply custom lengths.
These dimensions follow the ASME B18.2.1 standard. If you require your specific fastener to follow these specifications, please request this specification at the time of your quotation.
Please note that Nickel Systems will supply the thread length that is most readily available at the time of fulfillment, unless specified in your quote request. Please specify full-thread, partial-thread configuration or other specifications at the time of your quotation. Kindly note that it is the customer’s responsibility to clearly indicate all required product specifications to ensure an accurate & timely order fulfillment.
Product Overview
Get a general definition and explanation of a hex head cap screw along with other critical technical data & example applications & industries.
What is a Hex Head Cap Screw?
A hex head cap screw is a fastener with a hex head and a threaded shaft. It is designed to be screwed into a tapped hole or attached to a nut. It is tightened using a socket or combination wrench.
Here are several unique features of a hex head cap screw:
Has a washer face for even load distribution.
Maintains tighter tolerances compared to a hex bolt.
What are the similarities & differences between a Hex Bolt and a Hex Head Cap Screw?
Similarities:
Both feature a hexagonal head for tool engagement.
Used in mechanical assembly and structural applications.
Available in various sizes & materials.
Differences:
Hex head cap screws have tighter length tolerances than a hex bolt.
Hex head cap screws often come fully threaded. In contrast, hex bolts are often partially threaded. (If ordering, make sure to specify full thread or partially threaded in your quote.)
Hex bolts are generally paired with nuts. In contrast, hex head cap screws can be inserted directly into a tapped hole.
View the comparison between a hex head cap screw & a hex head bolt below. (These samples are typical. Refer to the ASME dimensioning requirements for precise manufacturing requirements.)
Hex Head Cap Screw 7/8″ Coarse Thread Hastelloy® C276 Material
Hex head cap screws’ grip gaging length and minimum body lengths are important parameters for screw design and selection because they directly impact the mechanical performance, assembly quality, and reliability of the fastened joint. Check out our blog on Grip Gaging & min body lengths.
What Industries & applications use Hex Head Cap Screws in exotic alloys?
Benefits: High temperature and oxidation resistance, along with superior durability.
Tips for Purchasing Hex Head Cap Screws
Dimensions: Check your diameter & required length. Refer to our dimensioning tables above to make sure to chose a hex head cap screw that will fit your application.
Material Recommendations: Identify and select the right material that provides sufficient corrosion resistance to your application’s environment.
Thread Type: Choose the right thread type for your application.
Fine Thread: Offers better tensile strength and resistance to vibration.
Coarse Thread: Faster assembly and better performance in softer materials.
Thread Formation: Consider the proper thread formation.
Rolled Threads: Stronger and smoother, suitable for high-stress applications.
Machined Threads: Precise but less resistant to fatigue.
Thread Coverage: Consider fully threaded or partially threaded configurations.
Fully Threaded: The threads run along its entire body.
Partially Threaded: The threads only partially cover the fastener’s body. The rest of the shank is smooth.
The main difference between the two configurations is that partially threaded hex head cap screws are stronger and more resistant to deformation than fully threaded hex head cap screws.
Specifications: Verify compliance with relevant standards like ISO (e.g., ISO 4014), DIN (e.g., DIN 933), or ASTM (e.g., ASTM A193).
Conclusion
Hex head cap screws in exotic alloys are critical components in demanding industries where performance, durability, and reliability are non-negotiable. Nickel Systems Inc. specializes in high-quality fasteners tailored to your needs.
Contact us today to start your quote and discover why we’re the trusted partner for your fastening solutions.
Nickel Systems provides high quality exotic grade materials that hold up in the toughest, most severe heat and corrosive environments. With our large inventory of specialty fasteners in stock, we are always ready to answer the call to serve the most challenging applications.
