Let’s talk about four common types of screws used on lightsaber hilts. Common types of lightsaber screws include: thumb screw, socket head screw, button head screw and set screw. Let’s examine each of these screws and how and where they are commonly used on custom saber hilts.
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A thumb screw doesn’t require any type of tool to in order to tighten or loosen the screw. Thumb screws, which use ridges or knurling on the edge, are intended to be tightened and loosened by hand. Thumb screws are sometimes added to lightsaber hilts as greeblies (i.e. decorative finishing pieces). For example, the Prequel Trilogy style Obi-Wan Kenobi lightsaber hilt uses a signature red thumb screw.
Socket Head Screw
A socket head screw is often used to install a Covertec wheel. A socket head screw is flat on the top and may require a hex key in order to tighten or loosen the screw. Some socket head screws have knurling on the head as well. If a knurled socket head screw protrudes from the hilt, then the user may be able to manually unscrew it without a tool, much like a thumb screw.
Button Head Screw
A button head screw features a rounded top and requires a hex key to install and remove the screw. Button head screws are typically smooth on the top and not ridged or knurled.
A set screw is a headless screw that is comprised almost entirely of threading. A set screw is commonly used as a blade retention screw or LED module retention screw on a lightsaber hilt. A set screw requires a hex wrench in order to install or remove the screw from the hilt.