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2. Infrastructure Projects In infrastructure development, M20 bolts play a critical role in fixing various components of bridges, towers, and other structures to the ground.

- Injection Systems These involve injecting the adhesive into a drilled hole before inserting the anchor bolt. This method ensures proper coverage of the bonding agent.

Moreover, these anchors are durable and resistant to environmental factors, making them suitable for both indoor and outdoor applications. For projects in humid areas, such as kitchens or bathrooms, metal anchors can withstand moisture better than many plastic alternatives.

A black hex head bolt features a hexagonal head that allows for easy tightening and loosening using standard tools, such as a wrench or socket. The black designation often refers to the finish applied to the bolts, which typically involves a coating such as black oxide or a similar treatment. This finish not only enhances the bolt’s appearance but also provides superior corrosion resistance, making them suitable for a variety of environments.