metal expansion nut

A double end threaded stud is essentially a cylindrical rod with threaded ends, allowing for secure attachment to nuts or other threaded components. The unique feature of the double end threaded stud with wrench flats is the addition of flats on the shank, which provide a surface for wrenches to grip during installation and removal. This design is particularly valuable in tight spaces where traditional fastening methods may be challenging. The flats enable users to apply higher torque without damaging the threads or slippage, making it easier to achieve the correct tightness.


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Wafer head screws, as the name suggests, feature a flat, round head with a thin profile, resembling a wafer. This design not only ensures a clean, aesthetic finish but also provides a larger surface area for better load distribution, minimizing the risk of material splitting. Their primary function is to securely join metal studs, which are commonly used in non-load bearing walls, partitions, and ceiling systems, to create a robust and stable structure.

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