TIMco Masonry Nails BZP 25 x2.5mm Box 100(HM25025)
The nail in question is most likely the **TIMco Masonry Nail 25 x 2.50mm, Box of 100**, with a common SKU of **HM25025** (or sometimes referenced with other retailer codes like FIX030140). This is a **Masonry Nail** specifically hardened for fixing into tough materials such as **masonry and concrete blocks**. It is manufactured from **hardened carbon steel** and features a **Bright Zinc Plating (BZP)** finish. The nail has a countersunk, flat head for a flush finish and a sharp 35° point for effective penetration. Due to its BZP coating, it has a low corrosion rating (Corrosion Rating 1) and is recommended for **internal use** in clean, dry, and low-humidity environments.