STANLEY BB852 5" x 6" Square Corner Ball Bearing Surface Mount Hinge - Single Hinge

- Item #: BCI1715240

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STANLEY Square Corner 5" x 6" Steel Ball Bearing Surface Mount Hinge - Single Hinge

This ultra heavy duty ball bearing hinge exceeds the strength requirements of other hinges, capable of supporting up to 2,000 lbs. Primarily used as prison hinges, it also functions for extremely heavy doors, or for lead-lined x-ray rooms.


  • Sold as Single Hinge
  • Ball Bearing Hinge
  • Commercial Strength
  • Removable Pin: No
  • Made of triple weight steel capable of carrying doors weighing up to 2000 lbs. (906 Kg) (Based on a 3' x 7' door with 3 hinges)
  • Square Corners
  • Traditional / Classic Theme
  • Typically made not swaged, no holes (application A) for full surface applications, or for full mortise (applications C) application. All other configurations are made to order

Ball Bearing Hinge: Ball bearing hinges are designed to handle the extra stress brought on by high traffic doorways. The greased bearings reduce the rotational friction extending the life of a hinge in heavy use situations. These hinges tend to be more durable than standard, or plain bearing hinges.

Material - Steel: Steel is cheap strong and durable making it a favorite for hinges of all types. Though it is more prone to rusting than solid brass or stainless steel.

Mounting: The standard corners for mortised door hinges are 1/4" radius, 5/8" radius and square corner. It is recommended that three hinges be used on doors up to and including 7.5 feet with one additional hinge for each additional 2.5 feet. Make sure you check your current hinges before making a purchase.


  • 5 Inch Height
  • 6 Inch Width
  • Made from Steel
  • Mount: Surface Mount
  • Gauge: 0.375" (Thickness of Hinge Steel)
  • 3 Knuckles

Today, Stanley is a global organization supplying hardware and tools for the architectural, consumer, industrial and residential markets worldwide. Utilizing state-of-the-art research, manufacturing and quality-control capabilities that incorporate the latest techniques, procedures and equipment, Stanley continues to deliver the innovative, high quality products that have made the Stanley name synonymous with the highest craftsmanship and dependability for more than 150 years.

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STANLEY BB852 Product Specifications

Specification Guide
ANSI Certification A8391
Corners Square Corner
Function Hinge
Gauge 0.375
Hinge Height 5
Hinge Strength Commercial
Hinge Type Ball Bearing
Hinge Width 6
Material Steel
Mounting Type Surface Mount
Number of Knuckles 3
Quantity 1
Removable Pin No
Theme Traditional

Installation Resource Center

Whether you are installing the product yourself or hiring a professional, our installation Resource Center has everything you need to get your project done. Visit the Installation Resource Center to get started.

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