UNC/UNF B18.6.3/B18.2.1, Zinc plated

An imperial hexagonal set screw or Hex Set as it's commonly known, manufactured to Ansi B18.2.1. This fully threaded bolt is designed for use in heavy duty fastening applications, and is ideal for installation into pre-threaded holes using a spanner or socket tool. Manufactured in SAE Grade 5 steel equivalent to metric 8.8 high tensile steel with a bright zinc plating for an attractive appearance and medium corrosion resistance for general purpose use.