• High Hex Washer Heads provide excellent driver bit control and self tapping threads provide fast efficient steel fastening
• Quadrex Low Profile Pancake Heads for Panel Clips also provide excellent driver bit control with either Phillips or square drive bits
• Master Seal Washer System provides a water proof, no leak installation for siding or roofing. Also available without washers
• The dished washers galvanized backing is vulcanized together with an EDPM sealing washer to form one piece
• Spiral fluted threads relieve torque and eliminate, roll-over when driving
• Indented Hex Heads available - Type A, B, AB - 3/4” to 4”, #14 only
• Master Tappers are available in Case Hardened Steel, HT3 (Modified) 304, High Tensile Stainless Steel - JS600 coated

Applications:

• TYPE A - provides panel to panel fastening up to 14 gauge
• TYPE B - with a tighter thread configuration and blunt point provides sheet to pre-drilled structural installation 16 gauge and up
• TYPE AB - With a combination of tight thread configuration and sharp point for alignment provides installation of sheet to pre-drilled light structural up to 3/16 of an inch