These solid aluminum nails can be hammered into pre-drilled holes to fasten tackless strip or metal moldings down onto concrete subfloors, or onto tile or stone when necessary. The semi-square body compresses and holds against the walls of a pre-drilled 1/8" hole. For carbide or masonry drill bits used to drill the 3/16" holes for these fasteners, see our No. 224 - 3/16" Solid Carbide Drill with No. 226 - 3/16" Hexagon Adaptor. Fastener dimensions: 3/16" dia. x 7/8" long. Hole size: 3/16" x 1".

• Solid aluminum nails for fastening tack strip onto concrete, tile, or stone
• Oval head seats in metal moldings with countersunk holes
• Semi-square body compresses against pre-drilled 3/16" hole
• Fastener dim.: 3/16" dia. X 7/8" long. Hole: 3/16" dia. x 1" deep