Hager 1751 4" x 4" Steel Full ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$32.34
$12.46
Hager Hager 1751 Pair of 4" x 4" 1/4" Radius Corner Steel Full Mortise Residential Spring Hinges HAG-1751

Hager 1751 4" x 4" Steel Full Mortise Spring Hinges with 1/4" Radius Corners

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Model: 1751410R
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Hager 1751 4" x 4" Steel Full Mortise Spring Hinges with 1/4" Radius Corners

BHMA Grade 1 Certified Spring Hinges for Commercial Applications

The Hager 1751 spring hinges deliver professional-grade performance with BHMA Grade 1 certification and ANSI 4156.17 compliance. These 4" x 4" full mortise spring hinges feature 1/4" radius corners and 0.097" gauge steel construction for doors weighing 45-75 pounds. Supplied as a pair with mounting screws for complete installation convenience.

Professional Features & Benefits

  • BHMA Grade 1 Certification: ANSI 4156.17 and ANSI K51071F certified for commercial-grade reliability and code compliance.
  • Precision Dimensions: 4" x 4" size with 1/4" radius corners designed for standard commercial door applications.
  • Heavy-Duty Steel Construction: 0.097" gauge steel provides exceptional durability for medium-duty commercial use.
  • Door Weight Capacity: Engineered for doors weighing 45-75 pounds with reliable spring tension control.
  • Full Mortise Design: Recessed installation provides clean appearance and maximum security for professional applications.
  • Complete Hardware Package: Supplied as 2-pack with mounting screws for immediate installation.
  • Versatile Installation Options: Compatible with all spring hinge configurations or combination spring and ball bearing hinge setups.
  • Multiple Finish Options: Available in various finishes including US3, US4, US26D, and others for architectural coordination.

Technical Specifications

  • ANSI/BHMA: ANSI K81071F
  • Commercial/Residential: Commercial
  • Corner Style: 1/4" Radius Corners
  • Duty Level: Medium Duty
  • Features: Full Mortise, Spring Hinge, 5/8" Round Corner Radius, Standard Weight
  • Knuckles: 3
  • Material: SteelMaximum Door Thickness 45-75 lbs. Notes For maximum versatility use all spring hinges or a combination of spring hinges and ball bearing hinges. Do not use plain bearing hinges. Full spring tension may not be required on all hinges. Strong wind conditions, drafts, carpeting drag, twisted/misaligned Packaging: 2 pack with screws
  • Subcategory: Full Mortise Hinges

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Hager Quality?

Hager spring hinges deliver professional-grade reliability with BHMA Grade 1 certification and 0.097" gauge steel construction rated for 45-75 pound doors. ANSI 4156.17 and ANSI K51071F compliance ensures code requirements are met. Engineered for demanding commercial applications where dependable performance and self-closing functionality are essential.

Product Specs

Knuckles:
3
Subcategory:
Full Mortise Hinges
Product Subgroup:
Spring Hinges
Features:
Full Mortise, Spring Hinge, 5/8" Round Corner Radius, Standard Weight
ANSI/BHMA:
ANSI K81071F
Duty Level:
Medium Duty
Product Group:
Door Hinges and Pivots
Product Type:
Spring Hinges
Commercial/Residential:
Commercial
Corner Style:
1/4" Radius Corners
Product Model:
1251
Product Function:
Spring Hinges
Product Category:
Door Hinges and Pivots
Product Substrate:
Steel
Department:
Door Hardware

Hager 1751410R – Frequently Asked Questions

1) Do I need to replace all the hinges on the door with Hager 1751 spring hinges, or just one?
You do not have to make them all spring hinges. The 1751 can be used as a full set of spring hinges or mixed with ball bearing hinges on the same door, and full spring tension is not required on every hinge in the set. One thing to avoid: do not pair them with plain bearing hinges. Note that the BEST 2060R and BEST RD2060R spring hinges are themselves plain bearing types, so they are not the ones to mix with.
2) My existing hinges have rounded corners. Will the Hager 1751 drop into the same mortise?
The 1751 is cut with 1/4 inch radius corners, so it drops into a pocket routed for a 1/4 inch radius hinge, which is what a router-cut wood door normally has. It will not sit correctly in a square corner mortise, typical of a chiseled prep or a hollow metal frame, without rework, and a 5/8 inch radius pocket will leave a gap at each corner. For those preps, Orca Hardware sells a 4 x 4 square corner spring hinge (4040 Series) and a 4 x 4 with a 5/8 inch radius corner (4058 Series).
3) The door needs to swing both directions. Will a Hager 1751 work?
No. The Hager 1751 is a full mortise spring hinge for a single action opening. For a door that swings both ways, use a double action hinge: the Deltana DASH95 is a double action spring hinge with solid brass cover plates, and the Deltana DASHS is a double action saloon hinge sold each, in 4", 5" and 6" heights. On the single action side, the Deltana DSH35R4 is the single action steel spring hinge at 3-1/2" x 3-1/2" x 1/4" radius.
4) What is the closest equivalent to the Hager 1751 spring hinge in a 4 inch size with 1/4 inch radius corners?
The Orca Hardware 4014 Series is a 4" x 4" x 1/4" radius corner spring hinge rated medium duty, which matches the Hager 1751 on size, corner style and duty level. The Hager 1751 is a full mortise steel spring hinge in a 1/4" radius corner, medium duty, carrying ANSI K81071F. Both suit the same 1/4" radius corner door and frame prep, so no re-routing of the mortise is needed to swap between them.
5) The doors on my building were prepped for 5/8 inch radius corner hinges. What spring hinge should I order?
Order a 5/8" radius corner spring hinge: the Orca Hardware 4058 Series is a 4" x 4" x 5/8" radius corner spring hinge in medium duty, and the Orca 4058 Series with a Z hole pattern covers frames prepped with that screw layout. The Hager 1751 itself is a 4" x 4" full mortise spring hinge and its feature set lists a 5/8" round corner radius alongside the 1/4" radius corner style, so confirm the corner on the leaf you are replacing before you commit a building-wide quantity.
6) I need a self-closing hinge that is UL listed. What should I use?
For a UL listed self-closer, the Design Hardware UL Spring Hinge is a medium duty spring hinge, and the Emtek 95013 is a UL listed spring hinge pair in 3-1/2" x 3-1/2" with square corners, plated steel. If the assembly needs a fire rating on an invisible hinge, the SOSS 216IC Series and the SOSS 220IC Series are invisible spring closer hinges with a 20 minute fire rating, both heavy duty. The Hager 1751 is a commercial medium duty full mortise spring hinge carrying ANSI K81071F.
7) I want a self-closing hinge that does not show on the door edge. What is the alternative to a butt spring hinge?
An invisible spring closer hides in the door and frame edge with nothing visible when the door is shut. The SOSS 218IC is a 7" heavy duty invisible spring closer hinge requiring a 1-3/4" minimum door thickness, and the SOSS 220IC Series is a 7" invisible spring closer with a 20 minute fire rating and a 2" minimum door thickness. The SOSS 216IC Series is the heavy duty invisible spring closer with a 20 minute fire rating. The Hager 1751 is a full mortise butt spring hinge with 3 knuckles, so its barrel is visible at the door edge. Check your door thickness against the SOSS minimums before switching.
8) Is the Hager 1751 a self-closing hinge I can use to meet a self-closing requirement?
The 1751 is a spring hinge, so the spring in the barrel pulls the door shut on its own without a surface closer on the door or frame. It carries an ANSI/BHMA certification of K81071F and is classified for commercial use. It is a medium duty product for 45 to 75 pound doors, so on heavier or high traffic openings a closer is the better tool.
9) What comes in the box with Hager 1751 hinges, and do I need to buy screws?
Each pack is two hinges with mounting screws included, so no separate fastener order. Count what the opening needs before you order: a door typically takes three hinges, so a single 4 x 4 door is two packs with one hinge spare, or one pack of 1751 plus a ball bearing hinge in the third position.
10) Do I have to specify handing when ordering Hager 1751 spring hinges?
No handing to call out. The 1751 is a full mortise butt hinge with a three knuckle barrel, and it mounts the same on a left or right hand door. What you do have to pick is size, 3-1/2 x 3-1/2 or 4 x 4, and finish. Spring tension is adjusted after the hinge is hung, not ordered.
11) What finishes can I get Hager 1751 spring hinges in to match the other doors in my building?
Nine finishes across both sizes: 605 bright brass, 609 antique brass, 619 satin nickel, 625 bright chrome, 626 satin chrome, 10R antique bronze, AN antique nickel, dull black, and 600 primed for painting. 626 satin chrome is the common commercial match on schools and offices; 600 lets you paint the hinge to the frame color where nothing in the standard range matches.
12) Is there a direct alternative to the Hager 1751 4 inch spring hinge from another brand?
Orca Hardware makes a 4 x 4 spring hinge with a 1/4 inch radius corner in its 4014 Series, medium duty, the same size and corner profile as the 1751 4 x 4. Orca also has a Z hole pattern version at 5/8 inch radius, the SPR4058 Series, if the frame prep calls for it. In the 3-1/2 inch size, Deltana lists the DSH35R4 single action steel spring hinge at 3-1/2 x 3-1/2 with a 1/4 inch radius, and Emtek's 95013 is a 3-1/2 x 3-1/2 plated steel pair with square corners and a UL listing.
13) Why won't my Hager spring hinge pull the door fully closed?
Hager calls out the usual culprits for a spring hinge that will not latch: strong wind conditions, drafts, carpeting drag, and a twisted or misaligned door. Before adding tension, check the door is not binding and the carpet is not catching the bottom edge. Remember that spring tension does not have to be set the same on every hinge, and the hinge is only rated to close a 45 to 75 pound door in the first place.
14) I need a removable pin on a self-closing hinge so the door can be lifted off. What should I look at?
The BEST 2060R is a plain bearing spring hinge with a removable pin in square corners, standard weight, and the BEST RD2060R is the same removable pin plain bearing spring hinge in a radius corner, standard weight. Both are medium duty, matching the Hager 1751 on duty level. The Hager 1751 is a 3 knuckle full mortise steel spring hinge with 1/4" radius corners. If the existing prep is radius corner, the RD2060R is the removable pin option that suits it.
15) My opening is heavier than medium duty. Which self-closing hinges are rated above that?
The Hager 1751 is a medium duty commercial spring hinge, as are the Orca Hardware 4014, 4040 and 4058 Series spring hinges, the McKinney 1502, the BEST 2060R and RD2060R, and the Design Hardware UL Spring Hinge. For a heavy duty rating, the SOSS 216IC, 218IC and 220IC invisible spring closer hinges are all classed heavy duty. Note the SOSS units are invisible closers set into the door and frame edge rather than surface-visible butt hinges, so the prep is different from a 1751 mortise.
16) Can I mix the Hager 1751 with plain bearing hinges on the same door?
No. The Hager 1751 is intended to be used as all spring hinges or as a combination of spring hinges and ball bearing hinges, and plain bearing hinges should not be used with it. That matters when reading peer descriptions: the BEST 2060R and BEST RD2060R are described as plain bearing spring hinges with removable pins, so they are a self-closing hinge in their own right rather than a filler hinge to pair with a 1751. If you need a second hinge on the leaf that does not carry spring tension, use a ball bearing hinge.
17) Are Hager 1751 spring hinges steel or brass?
Steel, at 0.097 inch gauge. The brass, bronze, and nickel options such as 605 bright brass and 619 satin nickel are plated finishes over that steel body, not solid material. If you need solid brass, Deltana's DASH95 double action spring hinge is listed with solid brass cover plates.
18) Are Hager 1751 spring hinges rated for commercial buildings or just residential doors?
Commercial. The 1751 is classified for commercial use, medium duty, in 0.097 inch gauge steel with an ANSI/BHMA certification of K81071F. That covers offices, schools, healthcare, retail, and multi-tenant residential corridors within the 45 to 75 pound door range.
How fast can I get the Hager 1751410R delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Hager 1751410R come with a warranty?
Absolutely. The Hager 1751410R is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Hager 1751410R?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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