butterfly bolts

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.

...

Moreover, these screws offer superior strength and durability. Their sharp points and strong threads ensure a secure hold, reducing the chances of loosening over time. They are particularly useful in situations where frequent disassembly is required, as they can be removed and reinserted without damaging the surrounding material They are particularly useful in situations where frequent disassembly is required, as they can be removed and reinserted without damaging the surrounding material They are particularly useful in situations where frequent disassembly is required, as they can be removed and reinserted without damaging the surrounding material They are particularly useful in situations where frequent disassembly is required, as they can be removed and reinserted without damaging the surrounding material2 self drilling screws.

...