Samac B30GSQ21CH 30x3.75mm Galv'd Square Twisted 2.5kg B30GSQ21CH Square Twist Nails are an extra strong hardened nail designed for reliable fixing. Suitable for use with joist hangers and restraint straps. Coated for added protection against exposure to damp conditions. Size: 30 x 3.75mm. Finish: Galv'd. Pack weight: 2.5kg. Vendor: Samac. Samac B30GSQ21CH Square Twist Nails provide a durable, high-strength fixing solution for demanding construction applications. Their hardened construction and galvanised coating make them ideal for secure installation of joist hangers and restraint straps, helping deliver dependable performance in damp environments. A practical choice for professional trade use, these nails combine strength, protection, and versatility in one reliable product.