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Product Description
Introducing our 5-Knuckle Plain Bearing Steel Hinge. This hinge was made for standard-duty applications and provide smooth and consistent operation without the complexity of ball bearings. The 5-knuckle hinge design allows for maximum stability and strength. Our standard-duty hinges are made from steel and are certified to ANSI/BHMA A156.1 standards. Its strong construction and reliable operation make this hinge is a great choice for those seeking quality and efficiency in their hardware solutions. Upgrade your doors today and experience the difference of PDQ locks. Connect with one of our sales representatives near you to learn more.

Docs & Downloads:
Discover the features and benefits of our standard-duty plain bearing hinge in the list below.
- Crafted from high-quality steel
- 0.130" thickness
- Rated Grade 3 and tested to 350,000 cycles
- Choose from 4 finishes: 600(P), 613E, 619(US15), 652(US26D) (Product Specific)
- Non-removable pin with a set screw (3/32" hex) for added security
- 1/16" clearance in the closed position
Upgrade your doors with PDQ’s hinges. Connect with a sales rep near you to learn more.

Features & Benefits
Certifications
Our plain bearing hinges meet industry standards. This proves their top quality and safety.
- NFPA 80-2010, Section 6.4.3.1 for fire-rated performance
- ANSI/BHMA A156.1 Grade 3 A8133
Choose a hinge that excels in performance and compliance.
FAQs
What's the difference between a plain bearing hinge and a ball bearing hinge?
When should I use a plain bearing hinge instead of a ball bearing hinge?
Choose the PB plain bearing hinge for low-frequency-use doors that aren't fighting a door closer, such as closets, storage rooms, and low-traffic interior doors. Because there's no closer spring tension to resist, the 5-knuckle plain bearing design holds up fine without the added bearing capacity a closer-equipped door needs.
What does "5-knuckle" mean on this hinge?
It refers to the number of interlocking barrel segments that make up the hinge joint; PDQ's PB hinge uses 5 knuckles for stability and strength in its plain bearing design, compared to the 3-knuckle construction on PDQ's spring hinge. More knuckles distribute the pivot load across a longer barrel for steadier operation.
How durable is the PB hinge if it has no ball bearings?
PDQ tests the PB hinge to 350,000 open-close cycles at Grade 3, PDQ's standard-duty rating for doors without closers. It's built in 0.130" gauge steel or stainless steel with a non-removable pin secured by a 3/32" hex set screw for consistent performance over its rated cycle life.
Specifications
Explore the specifications of our 5-knuckle hinge in the chart below. See its construction, dimensions, and more.
| MATERIALS: |
• STEEL — Applications: Interior doors, non-corrosive environments. MATERIALS: PACKAGING: FASTENERS: CERTIFICATIONS, LISTINGS, COMPLIANCES: • STAINLESS STEEL — Applications: Exterior, doors, corrosive environments |
| FASTENERS: |
• All hinges packed with Machine Screws (12-24 x 1/2” FHMS) and Wood Screws (12 x 1-1/4” FHWS) |
| CERTIFICATIONS, LISTINGS, COMPLIANCES: |
• Conforms with the requirements of NFPA 80-2010, Section 6.4.3.1. • Certified to ANSI/BHMA A156.1-2013: — Grade 3, Plain Bearing (PL) 350,000 cycles |
| WARRANTY: |
• Five (5) year limited warranty |
Download our Section 08710 Specification here.
Finishes
Explore the selection of available finishes for our plain bearing hinge. Choose one that best matches your next project.








