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How to Install Cap Screws

Published in Screw Installation 2 mins read

Installing cap screws typically involves using the correct tool to turn the screw into a threaded hole. For socket cap screws, which are common, this is done using an Allen wrench.

Understanding Socket Cap Screws

Socket cap screws are identifiable by their cylindrical head and a hexagonal recess in the top. This unique design requires a specific tool for installation.

Installing Socket Cap Screws

Based on the provided reference, the process for installing socket cap screws is straightforward and requires an Allen wrench that fits the hexagonal recess:

  1. Position the Screw: First, carefully place the socket cap screw over the threaded hole where it needs to be installed.
  2. Insert the Tool: Insert the Allen wrench (also known as a hex key) into the hexagonal recess found in the head of the screw.
  3. Tighten the Screw: Turning the Allen wrench clockwise will then tighten the socket cap screw into the threaded hole.

With their hexagonal shape, you can use an Allen wrench to install socket cap screws. After positioning a socket cap screw over a threaded hole, insert the Allen wrench in the screw's hexagonal recess. Turning the Allen wrench clockwise will then tighten the socket cap screw.

Tips for Installation

  • Ensure the Allen wrench is the correct size for the screw's recess to prevent stripping the head.
  • Start threading the screw by hand if possible to avoid cross-threading.
  • Tighten the screw firmly, but be careful not to overtighten, which can damage the screw, the hole threads, or the material being fastened.

Different types of cap screws (like hex head cap screws) require different tools, such as wrenches or sockets, that grip the outside of the head instead of an internal recess. However, for socket cap screws, the Allen wrench is the designated tool.

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