Design Hardware BB5-HW Series 4-1/2 x 4-1/2 Full Mortise Five Knuckle Commercial Hinges, Heavyweight, Non-Removable Pin

The embodiment of small but mighty

  • Ball bearing reduces friction to extend lifetime of hinge
  • For use on heavy weight doors or doors with high frequency use
  • More durable than standard hinges
  • Swaging: 1/16” Swage standard which provides 1/16” of clearance between leaves
  • Security NRP: NRP – Non removable pin standard on all BB5-HW hinges
  • Fire Door Use: Approved for most types of fire doors up to 4’ x 10’, 8’ x 10’ pairs – Refer to NFPA80
Brand

Finishes

316SS-US32D Marine Grade Satin Stainless Steel, 652 Satin Chrome, 631 Flat Black, 630 Satin Stainless Steel

Hinge Type

Full Mortise

Size

4.5" x 4.5"

Knuckles

Five

Bearings

Ball Bearing

Material

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

Gauge

0 .180

ANSI/BHMA Standard

Meets ANSI/BHMA A156 .1

Usage

Heavy Duty

Fire-Rating

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

BB5-HW NRP - 4.5" x 4.5" Heavy Weight NRP Ball Bearing Hinge (Non-Removable Pin)
Design Hardware BB5-HW NRP - 4.5" x 4.5" Heavy Weight NRP Ball Bearing Hinge (Non-Removable Pin)