Precision-engineered masonry nail designed for professional fastening applications. The fluted flat profile delivers superior holding power in concrete, brick, and stone substrates by distributing load across a wider surface area. At 3.5x75mm, this nail provides optimal penetration depth for medium-duty construction tasks while minimizing material damage. The fluted design reduces splitting and cracking in brittle materials, making it ideal for structural work, formwork installation, and general masonry applications. Engineered for reliability in demanding building environments.