Drive pins with a 0.300 in. diameter head are designed for permanently fastening a fixture to concrete, concrete over steel deck, concrete masonry walls and A36 or A572 / A992 structural steel. The fasteners are manufactured with a 0.145 in. diameter shank in various lengths. Knurled shank designs are available for installations in thick steel base materials. A plastic flute is mounted on the pin shank to retain the drive pin in the barrel of the tool and provide guidance during the driving operation. The fasteners are also available in with a mechanically galvanized (MG) coating for use in treated lumber.