Types of Cap Screws. Cap screws are fasteners for machine parts, threaded along the whole length of its shank and held by threads tapped in the hole in which it is screwed. Cap screws are available in socket head, flat head, hex head and round socket head types. As these fasteners are available in various designs, you will also require specific kind of drivers to fasten and loosen them, such as slotted, hex, Phillips and hex key socket drives.
Socket cap screws
A socket cap screw, also known as a socket head capscrew, socket screw, or Allen bolt, is a type of cap screw with a cylindrical head and hexagonal drive hole. The term socket head capscrew typically refers to a type of threaded fastener whose head diameter is nominally 1.5 times that of the screw shank (major) diameter, with a head height equal to the shank diameter. Forged heat-treated alloy examples are high strength fasteners intended for the most demanding mechanical applications, with special alloy formulations available that are capable of maintaining strength at temperatures in excess of 1000 degrees F (587 degrees C).
The term cap screw refers to many different things at different times and places. Currently, it most narrowly refers to a style of head.
Flat head cap screws
The flat head cap screws are designed to have a thin, level head. They could have a slot or Philips type screw on the head. These types of screws are usually ideal for when you need the fastener to be flush with the surface into which you are placing it. For this reason, they are usually best used in situations where you would want there to be no protrusions from the surface. An example of this is when you are putting together the fuselage of an aircraft. In such settings, having too many fasteners protruding from the surface could result in increased drag, and could also spoil the aerodynamics of the plane. The use of flat head cap screws would prevent this from happening.
Hex head cap screws
These are some of the most common types of cap screws. As the name suggests, their heads are designed to have a hexagonal shape. They are best for when you need a heavy duty screw to keep an item together. They are also ideal in situations where the fastener would be exposed to large forces. When selecting the hex head cap screws, it is usually wise to find out exactly how much force the fastener will be subjected to. This makes it easier to figure out which size to get, as well as which material to order the screw in.
Round socket head cap screws
The round socket head screws have a smooth round head. They can either be high or low, which refers to the size of the head. The low round socket head screws have a head that is nearly flat, while the high ones are more protruding.
We even offer other related accessories, including screw nuts, washers, lock nuts and lock washers. The materials include iron, steel and stainless steel and finishes mat be galvanized, zinc plated, zinc or black phosphate, determining the material of each rivet. These fasteners are available in various sizes.
Custom service
Our screws are available in a variety or grades, materials, and finishes, in metric and inch sizes. Our highly skilled team will work closely with customers to provide solutions.
Custom head style
Custom points styles
Custom finished
About us
Yuhuang Electronics Technology Co., Ltd. – Manufacturer, supplier and exporter of screws. Yuhuang offers a wide selection of specialized screws. Whether its indoor or outdoor applications, hardwoods or softwoods. Including machine screw, self tapping screws, captive screw, sealing screws, set screw, thumb screw, sems screw, brass screws, stainless steel screws, security screws and more. Yuhuang is well known for the capabilities to manufacture custom screws. Our highly skilled team will work closely with customers to provide solutions.
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For more information about cap screws from us at www.yhscrew.com, please email us at info@www.yhscrew.com. We look forward to hearing from you.
