Trudoor BB-NRP – 4.5″ x 4.5″ NRP Ball Bearing Hinge (Non-Removable Pin)

Usually Ships: Same Day
  • NRP (Non-Removable Pin) – Set Screw in Barrel
  • .134 Standard Weight – Ball Bearing
  • Five Knuckle, Template Hole Pattern

Available Options:

  • Prime Coat
  • Satin Chrome
  • Stainless Steel

BB Series butt hinges are perfect for nearly any commercial wood or metal door application, as they exceed all code requirements and offer value, durability and consistent performance.

  • Meets ANSI A156.2 – Dimensions and tolerances conform to ANSI – A156.7
  • NRP (non-removable pin) standard – security feature for outswing doors
  • 5 knuckle, templated hole locations for wood or metal doors & frames
  • 1/16” swage standard which provides 1/16” of clearance between leaves
  • Packed with 1/2” x 12-24 machine and 1-1/4” x #12 wood screws (use #3 driver bit)

Cross Reference

BB Series hinges can be specified as a substitute or direct replacement for: Bommer BB5000 / BB5002, Cal-Royal BB31, Design Hardware BB5, Ecco ECBB1100 / ECBB1101, Hager BB1279 / BB1191, Ives 5BB1, Mac Pro MPB79 / MPB91, McKinney TA2714 / TB2314, PBB BB81 / BB51, Stanley FBB179 / FBB191



600 Prime Coat, 630 Stainless Steel, 652 Satin Chrome


4.5" x 4.5"


Steel (ANSI A8112) or grade 304 stainless steel (ANSI A5112)


0 .134

ANSI/BHMA Standard

Meets ANSI/BHMA A156 .1

Fire Rating

Approved for most types of fire doors up to 4’ x 10’ – refer to NFPA80


Medium Duty

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