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Cal-Royal NM8453 Grade 1 Entrance Mortise Lock with Deadbolt

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Cal-Royal NM8453 Grade 1 Entrance Mortise Lock

  • BHMA Certified Lifetime Warranty, GRADE 1
  • Conforms to federal specification type 86; and to all dimensional and operational performances of ANSI A156.13-1 80, Series 1000, Extra Heavy Duty
  • UL listed 3-hour rating, conforms to standards UL10C and UBC 7-2-1997
  • Rust-proof heavy duty 2 ¾" backset lock case
  • Individual spring to prevent lever sag, easily reversible
  • Forged brass lever handles exceed requirements of ADA (American Disability Act)
  • Auxiliary latch bolt
  • Armored front plate conceals lock mounting screws
  • 1" throw heavy duty deadbolt with anti-saw hardened pins
  • Heavy duty ¾" latch bolt with anti-friction latch, easily reversible
  • Conforms & Meets ADA Regulations


  • Latch bolt retracted by lever from either side unless outside lever is locked by operating toggle button
  • Deadbolt projected by key from outside or by thumbturn from inside
  • Both deadbolt and latch bolt are retracted by inside lever simultaneously
  • Latch bolt is deadlocked when outside lever is locked or when deadbolt is projected
  • Outside lever is unlocked by toggle button if deadbolt is retracted
  • Inside lever is always free for immediate egress
More Information
  • For Doors - 1-3/4" thick
  • Backset - 2-3/4"
  • Lockcase - Heavy gauge zinc chromate steel
  • Front - Heavy gauge steel 8" x 1-1/4" x 3/32". Accommodates flat doors & doors beveled 1/8" in 2".
  • Armored Front - Wrought brass attached by machine screws to lockcase front
  • Deadbolt - 1" throw, brass, chrome plated with hardened steel rollers
  • Latchbolt - Brass, chrome plated with heavy-duty deadbolt
  • Guardbolt - Extruded brass, chrome plated
  • Stopworks - Rocker type, brass, chrome plated
  • Strike - Brass, non-handed curved strike 4-7/8" x 1 1/4". Curved-up strike available upon request
  • Handing - Handed. Easily field-reversible
  • Keyway - 6 pin solid brass “C” keyway Mortise cylinder standard
  • UL Listing - UL Listed “A” Label (3 hours), for use on fire doors, single or pair of doors. “F” mark stamped on strike
  • ANSI/BHMA - Meets ANSI/BHMA A156.13, Series 1000, Operational & Security Grade 1 Standards. Lock body conforms to Federal Specification Type 86; and all dimensional and operational performances, Exceeds 1,000,000 cycles.
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