Generally speaking, hex cap screws are used in precise applications like an OEM setting where tight tolerances are required. Hex bolts are often specified when the mechanical properties are more important than dimensional tolerances, like the construction industry.
What are cap screws used for?
Cap and machine screws are used to clamp machine parts together, either when one of the parts has a threaded hole or in conjunction with a nut. These screws stretch when tightened, and the tensile load created clamps the parts together.
What is a hex cap screw?
A hex cap screw utilizes a washer face under the head and a chamfered end, while the hex bolts lack those features and requires a nut. These fasteners are commonly used in construction, machine parts, and maintenance repairs.
What are hex head screws for?
Hex bolts, or hex cap screws, are large bolts with a six-sided head (hexagonal!) used to fasten wood to wood, or metal to wood.
When would you use a hex screw?
Hex bolts can be used for infrastructure that requires a strong fastener with high tensile strength properties due to their design and base materials. As mentioned, they can also be used in tight spaces with limited access because tools can access them from all angles due to the six points of contact on the hex head.
How do you use a hex cap screw?
Hex Cap Screws are NOT Hex Bolts
- Hex bolts are installed by turning a nut to tighten the fastener.
- Hex cap screws are installed into tapped holes by turning the head to assemble and tighten.
- Hex cap screws feature a washer face on the bearing surface and the chamfered point.
Do cap screws need nuts?
The most basic difference between a cap screw and a bolt is the way in which these fasteners are installed. Technically, a bolt is installed by turning a nut to tighten the fastener, while a cap screw in installed by turning the head of the bolt to assemble and tighten.
When would you use a socket head cap screw?
Socket head cap screws are a special type of fastener. Socket head cap screws are typically used in machine parts, die fixturing, and clamping. Socket head cap screws are ideal for applications in which there is not enough space to maneuver wrenches or sockets.
What are hex screws called?
Hex bolts, also called hexagon screw head bolts, hex cap bolts, hex-cap screws, or machine bolts, are a very common choice when it comes to construction and repair. Hexagon screw head bolts come in a large variety of sizes and diameters.
What does a cap screw look like?
Cap screws have a large head and a cylindrical shaft with external threads. The head has a larger diameter than the threaded portion, this provides a positive mechanical stop when tightening the screw.
Why are Allen keys used?
Hex keys, commonly known as Allen keys/wrenches in the UK and various other countries, are a very simple hand tool of the general spanner and socket family, used for tightening and loosening hexagonal bolts and other compatible fasteners.
Can I use metal screws in wood?
You can use metal screws any time you are connecting any material to a metal base, be it plastic, fiberglass, or wood, as these are the most versatile screws. They can also be used to attach hinges, hasps, brackets, and other types of hardware.
How do you unscrew a hex screw?
Turn the hex-key wrench in a counterclockwise direction to loosen the fastener. Insert the short end of the wrench into screws that resist loosening for greater turning leverage.
What are allen key screws called?
Allen key bolts, aka socket screws, come in many shapes and sizes. Popular types include socket head cap screws, socket button screws and socket set screws (grub screws).