double end threaded stud with wrench flats

In construction, EPDM washered fasteners are extensively used in roofing applications. They effectively seal joints and connections, safeguarding structures from water damage and maintaining integrity under extreme weather conditions. Their ability to withstand UV radiation makes them a preferred choice for outdoor installations. Similarly, in automotive industries, they play a crucial role in sealing engine compartments and other areas exposed to high temperatures and harsh chemicals.

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Butterfly screws, also known as toggle bolts, are a type of fastener that features a pair of wings that fold during installation and expand once they are inside a pre-drilled hole. The design allows for a stronger grip on hollow walls, such as drywall, where regular screws might not provide sufficient anchoring. Butterfly screws are particularly useful for mounting heavier items like televisions, where the risk of falling can be a significant concern.


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