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HomeFrequently Asked QuestionsGeneral Information

General Information

Frequently Asked Questions
Hager Companies
General Note for all Hinge Installation Instructions

When driving hinge pins into the hinge knuckle, use a leather or plastic mallet or a soft block of wood as a cushion to prevent damage to the hinge finish.

Hinges should not be applied to the door and / or frame until all paint and / or stain has thoroughly cured. Allow at least 48 hours for curing time. Any additional modifications to the door or frame must be made prior to hinge installation, i.e., welding, door or frame repair, etc.



Q: What are the Decimal Equivalents for Hollow Metal frame Gauges?


A: 24 GA. -- .0239
20 GA -- .032
18 GA -- .042
16 GA -- .053
14 GA -- .067
12 GA -- .093
8 GA -- .164
7 GA -- .1793



Q: What is the Expected Frequency of Door Operation?

A:
Application  Daily   Yearly  Frequency
 Large department store entrance        
5,000    
1,500,000      
 Large office building entrance 4,000 1,200,000  
 School entrance 1,250 375,000  
 School restroom door 1,250 375,000  High
 Theater entrance 1,000 300,000  
 Store or bank entrance 500 150,000  
 Office building restroom door 400 120,000  
 School corridor door 80 16,000  
 Office building corridor door 75 15,000
Medium
 Store restroom door 60 12,000
 
 Residential entrance door 40 8,000
 
 Residential restroom door 25
2,500  
 Residential hallway door 10 1,000  Low



Q: What is a cased opening?

A: This is a frame without stops. Normally doors are not set into frames without stops. The frame is dressed to allow for an opening in a wall but without the need of a door.



Q: Explain aluminum doors and frames that need special swaging for slotted hinge applications.

A: Some aluminum doors and frames have slots cut into the face of the door and frame allowing the hinge leaves to be inserted, using the edge of the door and the rabbet of the frame as the re-enforcing plates. The hinge is drilled and tapped and the edge of the door and face of the rabbet are counter-sunk to accept the screw heads. Hager products that are acceptable for this type of application are 1277, 1278, 1577, 1578, BB1277, BB1278, BB1577, and BB1578.



Q: What is a double egress door?

A: A pair of doors that are comprised of two-single-acting doors swinging in opposite directions both doors being of the same hand.



Q: Explain the process to determine the size of a wide throw hinge.

A: The formula reads: Take the door thickness, minus the backset, times two, plus the clearance required. It is best to review this formula and the related drawings for a better understanding. The formula and drawing may be found in the General Information Section of the current Hager catalog.



Q: Explain what a raised barrel hinge will do and why it is needed.

A: A raised barrel hinge is used when the door is set in a deep revealed frame. The rabbet of the frame is much wider than the thickness of the door. The hinge will be either surface applied to the face of the frame or it may be mortised. The hinge knuckle will project on an angle toward the center of the door or what is referred to as an offset. In most cases, the opening degree of the door will be restricted due to the depth of the frame. To see an illustration of this in Hager’s General Information Section of the current catalog.



Q: Explain what a jamb surface mount hinge is and why it is needed.

A: A raised barrel hinge is used when the door is set in a deep revealed frame. The rabbet of the frame is much wider than the thickness of the door. The hinge will be either surface applied to the face of the frame; this is referred to as Jamb Surface Mount. In this case, with the hinge being surface applied, the door will require double mortising so both hinge leaves will reside in the hollow of the mortise. The hinge knuckle will project on an angle toward the center of the door or what is referred to as an offset. In most cases, the opening degree of the door will be restricted due to the depth of the frame. To see an illustration of this in Hager’s General Information Section of the current catalog.



Q: Explain what a swing clear hinge is used for and why they are needed.


A: A swing clear hinge is used mostly in hospitals and institutional buildings when the passage area must be the full width of the opening. One such case would be an eight-foot wide corridor that requires the full opening for the passage of two beds or carts. With the use of swing clear hinges this passage may be accomplished. The hinges are designed to swing the door completely clear of the opening when the door is opened 95°. The standard way to accomplish this degree of opening is to build a pocket in the wall to accept the door. This allows the door to be concealed in the wall pocket and not obstruct the flow of traffic.



Q: Explain what specialty hinges are for: interim, short leaves, drop leaves, rescue hardware, shimming, electric hinges.


A: The above referenced hinge types are made to salvage doors and frames supplied to the jobsite that do not match with one another. Special information will be needed for our internal sales department help determine the proper hinge required. Please include the size of the re-enforcing cutout, mortised size of the hinge, difference in the two locations; or any other pertinent information that you can provide, to help our staff to determine the correct application for your needs.



Q: A Customer is installing a wood door that is 3' x 7' and 1 3/4" thick. The thickness of the door indicates a 1/4" backset. The door will be applied to a metal frame. A 5/8" molding will be applied to the face of the frame only.


The door has a magnetic holder that protrudes 2" from the face of the wall and 1/2" (adjustable to 1 1/2") from the back of the door. The door must swing 180 degrees, and be parallel with the wall for the magnetic holder to work. What wide throw hinge will allow for the door to remain parallel with the wall at 180 degrees and allow the magnetic door holder to properly function?


A: A set of three BB1279 4.5” x 6.0” hinges should be used in this instance. Follow the sequence listed below for this correct answer.

(The magnetic holder protrudes a total of 2 1/2" from the wall; the molding is 5/8"; as the molding will not protrude farther than the magnetic holder, the molding can be eliminated from the equation.

Door thickness minus the backset, times 2 = (1 3/4" - 1/4" x 2) = 3"
Plus the clearance required = (2" + 1/2") = 2 1/2" or (2" + 1 1/2") = 3 1/2"
- The holder may be adjusted from 1/2" to 1 1/2".
Plus the metal frame inset = 1/8"

Using the minimum clearance required (2 1/2"):
3" + 2 1/2" + 1/8" = 5 5/8" wide

Using the maximum clearance required for the magnetic door holder (3 1/2"):
3" + 3 1/2" + 1/8" = 6 5/8" wide

In order for the door to remain parallel when opened 180 degrees, the width selected should fall in between the minimum and maximum clearance required for the magnetic door holder. The nearest standard size in the range is 6".

Sizing information can found in the General Information Section of Hager’s current catalog.)



Q: A Customer will be installing a 2 1/2" thick x 4' x 7' wood door weighing 200 lbs. The door will be applied to a wood frame with a 1 1/2" thick molding. The Customer would like for the door to swing 180 degrees. What is the minimum hinge requirement for the door?

A: The correct set of hinges to use in this case are 3 each BB1168 6" x 6".

(The first step is determining the height of the hinge. In Table #3 on p. 5 of the current Hager Companies catalog, a hinge height of 6" is recommended for doors that are 2 1/2" thick and over 42" wide. The minimum width is determined by using the formula listed in bold towards the bottom of p. 5 (door thickness minus the backset, times 2, plus the clearance required). In the drawing Table #5 on p. 6 of the catalog, a backset of 3/8" is indicated for doors over 2 1/4" thick.

Using the formula: (2 1/2" - 3/8") = 2 1/8"
(2 1/8" x 2) = 4 1/4"
(4 1/4" + 1 1/2") = 5 3/4"

The next standard size is 6". To meet the minimum requirements, a 6" x 6" hinge will be used.



Q: A Customer is installing a wood door that is 3' x 7' and 1 3/4" thick. The thickness of the door indicates a 1/4" backset. The door will be applied to a metal frame. A 5/8" molding will be applied to the face of the frame only.

The door has a magnetic holder that protrudes 2" from the face of the wall and 1/2" (adjustable to 1 1/2") from the back of the door. The door must swing 180 degrees, and be parallel with the wall for the magnetic holder to work. What wide throw hinge will allow the door to remain parallel with the wall at 180 degrees and allow the magnetic door holder to work?

A: The correct set of hinges to use in this application are 3 each BB1279 4.5 x 6

(The magnetic holder protrudes a total of 2 1/2" from the wall; the molding is 5/8"; as the molding will not protrude farther than the magnetic holder, the molding can be eliminated from the equation.

Door thickness minus the backset, times 2 = (1 3/4" - 1/4" x 2) = 3"
Plus the clearance required = (2" + 1/2") = 2 1/2" or (2" + 1 1/2") = 3 1/2"
- The holder may be adjusted from 1/2" to 1 1/2".
Plus the metal frame inset = 1/8"

Using the minimum clearance required (2 1/2"):
3" + 2 1/2" + 1/8" = 5 5/8" wide

Using the maximum clearance required for the magnetic door holder (3 1/2"):
3" + 3 1/2" + 1/8" = 6 5/8" wide

In order for the door to remain parallel when opened 180 degrees, the width selected should fall in between the minimum and maximum clearance required for the magnetic door holder. The nearest standard size in the range is 6".

Sizing information can be found on p. 5 of the current Hager Companies catalog. Backset information can be found on p. 6 of the catalog.)



Q: A 4 1/2" x 4" hinge may be used instead of a 4 1/2" x 4 1/2" hinge for what reasons?

A: The correct answer to this question is so the knuckle does not stick out as far, to provide a cleaner appearance.

(A 4 1/2" x 4" hinge is sometimes specified because the knuckle does not stick out as far, providing a cleaner appearance.

Some architects will specify a 4 1/2" x 4 1/2" hinge so that it may be applied to either a metal door and metal frame as well as wood doors and wood frames. Wood frames, and some metal frames, have applied molding. When determining the size of the hinge, the molding will require additional clearance indicating a wider, rather than narrower, hinge will be applied.

The weight of the door is not a consideration for the question above.

A contract hinge is measured as height x width. On option "D", the height of one leaf of the hinge would be 4" and the height of the other leaf would be 4 1/2". The differing heights of the hinge leafs indicate an industrial hinge will be applied. For questions on industrial hinges, please contact Technical Assistance.)



Q: For the BB1262 5", how wide does the face of the frame needs to be to accommodate the exposed part of the hinge:

A: The correct dimension is at least 2”.

(The minimum width of the face of the frame is determined by adding the dimension from the middle of the knuckle to the outside of the hinge leaf applied to the frame + 1/2 the width of the hinge knuckle.

For the diagram above (0.T375):

Middle of the knuckle to the outside of hinge leaf (frame side) = 1 5/8" 1/2 the width of the knuckle (0.728 x .5) = 0.364 (or 3/8”)

1 10/16" + 3/8”(6/16) = 2”)



Q: Can a pin with a NRP feature ever be removed from a hinge?

A: Yes

(The non-removable pin (NRP) has a small setscrew in the body of the barrel; the setscrew is tightened against the pin. If pin removal is necessary, the setscrew is removed or loosened and the pin tapped from the bottom in the usual manner. The set- screw may be accessed when the door is in the open position.

Information on the NRP feature is located in the General Information Section of the Current Hager catalog.)



Q: What does it mean to mortise, in relation to hinges:

A: To mortise means to rout or groove a space to accept the hinge. When a hinge is mortised correctly, the hinge face is flush on the edge of the door and an the rabbet of the frame. On standard hinges, a 1/16" gap will exist between the two hinge leaves when the door is closed and in the frame.



Q: On a standard 1 3/4" hollow metal door and frame, how much further will the knuckle protrude from the face of the frame if a Wide Throw BB1279 4.5" x 6" is used instead of a BB1279 4.5" x 4.5" hinge?

A: The correct answer is 3/4". To determine the additional distance the hinge will protrude from the face of the frame, first determine the "F" dimension (distance away from the face of the frame) for both the 4.5" x 6" and the 4.5" x 4.5". Then subtract the "F" dimension of the 4.5" x 4.5" from the "F" dimension of the 4.5" x 6".

"F" 4.5" x 6" = 2 5/8"
"F" 4.5" x 4.5" = 1 7/8"

Additional distance for the 4.5" x 6" = 3/4"



Q: What is the proper hinge application to use in high humidity or corrosive conditions?

A: The correct hinge to use in this situation would be a stainless steel based hinge. More information would be required to select the proper type and size.

(In Hager’s current catalog, review the General Information Section under “Determine Type of Material":

Steel is a corrosive material.

Stainless Steel is rust resistant. - and can be used in highly corrosive areas, including geographical areas such as seacoasts or heavily industrialized areas where corrosive conditions may exist.

Brass is also non-corrosive and rust resistant. A hinge manufactured from a brass material has less strength than either steel or stainless steel; and may not be used on fire-rated doors.)



Q: A Customer has a beveled edge 1 3/4" door and a hollow metal frame with a concealed door closer. They would also like to use an anchor set with a 32D finish and a lifetime warranty. What anchor and hinge combination should be used by the Customer?

A: In this case a Customer should use one each Anchor Hinge AB8509 and two each AB850 as a set. Both products may be supplied in stainless steel material.

(Anchor hinges can be located in the tab marked Pivots and Anchors of the current Hager Companies catalog. The BB1195 and the AB8507 are both specified for square edge doors. Both the AB8508 and AB8509 are specified for beveled edge doors. AB8508 is manufactured from either stainless steel or brass, and must be used with one pair of either AB750's or AB850's. The AB8508 features a longer reinforcement strap. The AB8509 is manufactured from either stainless steel or brass and must be used with one pair of either AB750's or AB850's. The AB8509 features a shorter reinforcement strap, which can be used in conjunction with a concealed door closer. )



Q: Can a 455 5 ¾” x 1 ¾” US26D RHR Combination Rescue Stop and Strike plate be reversed in the field, to be used as a LHR strike, by simply turning the plate over?

A: "No"

(The 610, or the door release or stop, is built-in to the strike. The 610 unit is counter-balanced to tilt forward when used as a door stop. If the strike is turned upside down, the counter-balancing will be on the bottom and cannot be tilted forward to be used as a door stop. )



Q: A hollow metal "B" label (1 1/2 hours) door may use brass, full-mortise hinges?

A: "No".

(From the current Hager catalog, General Information Section, refer to “Determine the Type of Material" - "Brass material may not be used on fire rated or labeled openings because of the low melting point (of brass).")



Q: What is a NRP Statement?

A: NRP is an industry standard, which stands for, “Non-Removable Pin”. Hager’s actual application is to groove the center of the hinge pin. On the center knuckle of the hinge, there is installed a setscrew which tightens against the groove. This modification is intended as a deterrent only. It is not to be considered suitable for high-security applications or abusive environments. If there are any questions, please call Hager’s Sales Department.
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