CINCINNATI — KYOCERA SENCO Industrial Tools (SENCO), a global leader in professional power fastening technology, has introduced two new, powerful metal connector nailers that fire 2.5-inch nails commonly required in hurricane and seismic zones. 

The JN91P1 and JN91P2 pneumatic metal connector nailers are used for fastening pre-punched metal structural connectors like joist hangers, seismic/hurricane straps and rafter ties. They deliver 10% more power than competing nailers and previous-generation tools. The increased power allows consistent, complete sinking of nails in ultra-dense engineered lumber commonly used for structural beams. 

“Earlier this year, SENCO released all-new 1.5-inch metal connector nailers featuring more power and heavier-duty components,” said Ryan Schuler, product manager for SENCO’s pneumatic construction tools. “The addition of 2.5-inch nailers extends our upgraded joist hanger line, allowing users to fire larger nails wherever more structural stability is required or simply preferred.”

Both of the new tools shoot 1.5-inch to 2.5-inch nails ranging from .131 to .162 inches in diameter. The JN91P1 features a short magazine that holds a single rack of 34-degree paper tape-collated nails, offering a high degree of mobility between joists and rafters. The JN91P2 has an extended magazine that can accommodate two racks of nails, allowing users to maintain higher production rates with fewer reloads.

The nailers feature an innovative, redesigned nosepiece that leads with a metal point to ensure accurate placement into pre-punched holes. 

Other features include:

  • A redesigned, overmolded grip for comfort, control and reduced slipping.
  • An adjustable exhaust port that directs blowback away from the user.
  • A rugged belt/rafter hook made from heavy-duty steel.
  • A lockout that prevents dry firing and signals the user when it is time to reload.

Each nailer comes with tool oil, safety glasses, an air plug and a five-year limited warranty. Visit for more information.