plastic expanding nut

Structural bolts are made from high-strength materials such as grade 5 or grade 8 steel, making them resistant to corrosion and wear. They are heat-treated to achieve the necessary tensile strength, which can range from 120,000 to 180,000 pounds per square inch (psi). This high-strength capacity is crucial for withstanding the dynamic forces and stresses that structures face over time, including wind, seismic activity, and the weight of the structure itself.

...

Hex head screws equipped with rubber washers are a robust solution for many fastening needs, providing improved sealing, vibration absorption, and ease of installation. Whether in construction, automotive, or any other industry, their ability to enhance performance while extending the lifespan of assemblies makes them an indispensable part of modern engineering and design. As the demand for durable and reliable fasteners continues to grow, the importance of solutions like hex head screws with rubber washers will undoubtedly remain a key consideration for professionals and DIY enthusiasts alike.


...

The 1 2 indicates the dimensions of the anchor plate. It could mean a 1 by 2-inch rectangular plate or a 1.2-inch thick plate, depending on the context2-inch thick plate, depending on the context2-inch thick plate, depending on the context2-inch thick plate, depending on the context5 8 x 4 1 2 strong bolt 2 anchor. Regardless, the plate's purpose is to distribute the load from the bolts evenly onto the substrate, preventing localized stress and potential damage.

...