Used for stitching metal or attaching to metal. A pre-drilled hole is required. Features and Benefits • 3 different head types; pan, countersunk and flange head • 60° self-tapping thread for ease of insertion • Plated in Trivalent Chromium (Cr3) Zinc • Manufactured to BS 4174:1972 Contents • 6 x 1/4" Pan (Qty 50) • 6 x 1/2" Pan (Qty 165) • 6 x 3/4" Countersunk (Qty 140) • 8 x 1/2" Pan (Qty 180) • 8 x 1/2" Flange (Qty 100) • 8 x 3/4" Pan (Qty 115) • 8 x 3/4" Countersunk (Qty 140) • 8 x 1" Pan (Qty 80) • 8 x 1" Countersunk (Qty 100) • 8 x 1 1/2" Countersunk (Qty 45) • 10 x 1/2" Pan (Qty 120) • 10 x 5/8" Pan (Qty 70)