A grub screw is a specific type of screw without a head, primarily utilized in precise mechanical applications where a subtle and effective fastening solution is needed. These screws feature a machine thread that allows them to be used with a tapped hole for secure positioning.
What are the various kinds of grub screws?
Grub screws come in different variants, with the four most popular styles being:
How is a grub screw secured?
Grub screws are typically tightened using a hex or Allen wrench, although certain models may need a slotted screwdriver. Alternative drive options include Torx or six-lobe drives, as well as square socket drives, commonly referred to as Robertson drives.
What are the common uses of grub screws?
In industrial settings, grub screws are often employed to lock components in place on shafts. Their headless design allows them to remain inconspicuous and sit below the surface of the assembled item. Grub screws are widely found in applications such as door locks, handles, and also in domestic items like bathroom fixtures, curtain rails, lighting fittings, and taps.
Are there other terms for grub screws?
Grub screws are also known by several different names, such as:
- Set Screws or setscrews
- Socket Set Screws
- Blind Screws
Grub screws vs. set screws
Although "grub screw" and "set screw" are often used interchangeably, there are differing opinions on their precise meanings. Some consider a grub screw to be a set screw that fits entirely inside a hole, as is common with many set screws. Others draw the distinction based on the type of drive: a grub screw is seen as one with a slotted drive, while a set screw is associated with a hex drive. For many, the terms are interchangeable, and there’s no universally agreed-upon definition.
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Post time: Feb-17-2025
