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HomeFrequently Asked QuestionsCommercial Hinges - Miscellaneous

Commercial Hinges - Miscellaneous

Frequently Asked Questions
Hager Companies
Q: Where can I find information on the type of fasteners that are used with a 1279 hinges?

A: Individual screw information is available on each catalog page that refers to the hinge in question.



Q: What is the pin diameter for 1279 4.5” hinge?


A: The correct pin diameter for a 1279 4.5” hinge is 0.312.



Q: What is the base material for BB1191?


A: A BB1191 hinge may have either brass or stainless steel as a base metal. The way to distinguish between the two base metals, is that stainless steel finishes are US32 – Bright Stainless Steel or US32D – Satin Stainless Steel



Q: Can Hager provide button tips for Tri-Con hinges?


A: Yes – a drawing has been prepared for this application, but please be sure to highlight or notate this request on your purchase order.



Q: What is the difference between OB bearings and BB bearings?


A: Oil-lite bearings (OB) are powdered bronze, impregnated with oil; ball bearings (BB) have bottom raceway, 13 ball bearings, top raceway, and are enclosed in a jacket. Engineering prefers to use Ball Bearing for additional strength and stability.



Q: What are the specific dimensions for a particular hinge?


A: Please review all dimensioning for a specific hinge, either on the hinge template or on the catalog page related to the product



Q: Hollow metal “B” label doors may have non-ferrous hinges?


A: False – For full-mortise hinges. The hinges required are to be either Steel or Stainless Steel, and have anti-friction bearing. Spring hinges are also acceptable on fire-rated doors.
( Some models of the Roton Continuous Geared Hinges may carry a fire-rated listing, but these are made from aluminum-based material.)



Q: Swing clear hinges will work satisfactorily in double egress openings?

A: True – Be sure to check frame conditions before ordering, for depth and reveal.



Q: A heavy-duty Roton Continuous Geared Hinge is a good solution for existing door and frame, which is sagging?

A: True – The Roton Continuous Geared Hinge will carry the weight of the door much better than three regular hinges and distribute the weight evenly. The severe pulling and stress at the top, leading edge of the door is eliminated through this weight allocation.



Q: What are the three most common groups of hinges – by weight and bearing description?

A: Plain Bearing/Standard Weight - for use on medium weight doors or doors requiring low frequency service.

Ball Bearing/Standard Weight - for use on medium weight doors or doors requiring medium frequency service.

Ball Bearing/Heavy Weight – for use on heavy doors or doors requiring high frequency service.



Q: What solution or solvent can be used to clean paint from US3 plated hinges?

A: None – the lacquer is water-based lacquer and will dissipate when water or solvents are applied. Paint thinner and solvents will reduce the length of time that is required for a brass-based hinge to begin tarnishing.



Q: What chemical compound is recommended to remove the lacquer off a brass base material hinge?

A: Fornby’s® stripper or metholine chloride are the best products to remove lacquer. When no lacquer is present on the hinge, the hinge will start to turn to a patina color; this process may take longer or shorter lengths of time, depending on the humidity in your region of the country.



Q: What chemical compound is recommended to remove the lacquer off a steel base material hinge?


A: Nothing – do not remove the lacquer from a steel based material hinge. If this is done, the plating will be removed and rusting is begin immediately.



Q: What is the purpose of a template?

A: The purpose of a template is to supply technical dimensions for a specific product, to act as a substitute for a physical sample, and to reduce the cost of supplying physical samples. All pertinent information pertaining to a product will be listed on its corresponding template.
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