What Is a Truss Head Screw?

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Truss head screws are fasteners designed with an extra wide and slightly rounded head.

A screw refers to a type of fastener device which is comprised of a thread, or helical ridge, that wraps around a cylinder body. One type of screw called the truss head is shaped in a way that provides fastening support with the least amount of surface obstruction.

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Truss Head

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Truss head refers to a screw head that is extra wide and has a slightly rounded surface, or top. In other words, the head or top of the screw protrudes just above the surface to be fastened, but contains a wider surface area just under the head.

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Uses

These screws can be used for applications like securing thin membranes, such as one-ply, through insulation. Wooden truss head screws are also commonly used to attach cabinets to steel studs; or to attach sliding shelf supports, since the low-profile head of the truss head screw does not interfere with guide operation.

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Truss head screws are well suited for sheet metal and other material with large diameter holes due to their wide head. Additionally, because of their low-dome shaped head, these screws make tampering with or removing the head difficult.

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