Triangle Fastener Corp. (TFC) expanded their line of BLAZER Drill Screws with new sizes designed to attach metal panels over rigid insulation. These unique screws have two different threads with a gap in between that eliminates jacking of the panel during installation.

TFC’s BLAZER Drill Screws are available in new sizes designed to attach metal panels over rigid insulation


  • A special ¼-14 “high thread” under the screw’s head secures the metal panel tightly against the head for optimal seal.
  • Unique unthreaded section eliminates the “jacking” of the panel during installation, improving the drilling and tapping performance
  • BLAZER 3 drill point for fast penetration with less effort.
  • Lengths: 1-7/8 inch, 2-3/8 inch, 3-1/4 inch, and 4 inch
  • TRI-SEAL 1,000-hours salt spray coating provides over 20-times more corrosion protection than screws with commercial zinc plated.
  • Available with a zinc alloy cap or stainless steel cap providing superior corrosion resistance in harsh environments

Contact TFC for more information at (800) 486-1832 or