Don-Jo SH94545 Full Mortise Sp...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$147.86
$129.87
Don-Jo SH94545 Full Mortise Spring Hinge 4-1/2" x 4-1/2" Stainless Steel, Single Acting

Don-Jo SH94545 Full Mortise Spring Hinge 4-1/2" x 4-1/2" Stainless Steel, Single Acting

(No reviews yet) Write a Review

Model: SH94545-630
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$147.86
$129.87
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Don-Jo SH94545 Full Mortise Spring Hinge 4-1/2" x 4-1/2" Stainless Steel, Single Acting

The Don-Jo SH94545 is a commercial-grade full mortise spring hinge measuring 4-1/2" x 4-1/2", constructed from durable stainless steel with a 630 finish. Designed for single-acting door applications, this non-handed hinge features self-lubricating bearings and easy spring tension adjustment, making it a reliable choice for high-traffic commercial environments. UL Listed and built to ANSI standard K51071F, the SH94545 delivers consistent, code-compliant performance with a 0.134 gauge stainless steel body.

Key Features

  • Full Mortise Design: 4-1/2" x 4-1/2" full mortise configuration provides a clean, flush installation ideal for commercial door applications.
  • Stainless Steel Construction: 0.134 gauge stainless steel body with 630 finish delivers exceptional corrosion resistance and long-term durability.
  • Single Acting Operation: Engineered for single-acting doors, ensuring controlled, consistent door return in commercial settings.
  • Self-Lubricating Bearings: Integrated self-lubricating bearings reduce maintenance requirements and ensure smooth, quiet operation over the life of the hinge.
  • Easy Spring Tension Adjustment: Tool-accessible spring tension adjustment allows installers and facility managers to fine-tune door closing force without removing the hinge.
  • Non-Handed: Non-handed design simplifies ordering and installation, eliminating the need to specify left- or right-hand orientation.
  • UL Listed: UL Listed for use in fire-rated door assemblies, supporting code compliance in commercial construction.

Certifications & Compliance

  • UL Listed
  • ANSI: K51071F
  • Commercial Grade

Technical Specifications

  • Subcategory: Hinges
  • Product Group: Door Hinges and Pivots
  • Product Subgroup: Spring Hinges
  • Product Type: Spring Hinges
  • Commercial/Residential: Commercial
  • Product Size: 4.5" x 4.5"
  • Product Category: Door Hinges and Pivots
  • Department: Door Hardware

Typical Applications

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

Why Don-Jo SH94545?

Don-Jo SH94545 spring hinges are engineered for demanding commercial applications, combining a 0.134 gauge stainless steel body with self-lubricating bearings and UL Listing to ANSI K51071F standards. The non-handed, single-acting design with field-adjustable spring tension ensures straightforward installation and long-term reliability in high-traffic door openings where consistent performance is essential.

Manufacturer Resources

DON-JO Hinges

Product Specs

Subcategory:
Hinges
Product Group:
Door Hinges and Pivots
Product Subgroup:
Spring Hinges
Product Type:
Spring Hinges
Commercial/Residential:
Commercial
Product Model:
SH94545
Product Size:
4.5" x 4.5"
Product Category:
Door Hinges and Pivots
Department:
Door Hardware

Don-Jo SH94545-630 – Frequently Asked Questions

1) Will a Don-Jo SH94545 spring hinge work on a fire-rated door opening?
The SH94545 is UL Listed for use in fire-rated door assemblies, and it is built to ANSI K51071F. That is the pairing an inspector looks for on a self-closing fire door: the hinge itself provides the closing force, so the leaf latches without a separate closer. Verify the door and frame label allows spring hinges for the closing device on your opening.
2) Do I have to order a left hand and right hand version of the Don-Jo SH94545 hinge?
No. The SH94545 is non-handed, so one part number covers both left and right hand doors. For a locksmith or a property manager keeping stock on a truck or in a maintenance closet, that means a single SKU covers every opening of this size instead of two.
3) What size mortise cutout does the Don-Jo SH94545 spring hinge need in the door and frame?
It is a full mortise hinge measuring 4-1/2 inches by 4-1/2 inches, so it drops into the standard 4-1/2 inch hinge prep already cut in most commercial hollow metal frames and doors. The leaf is 0.134 gauge stainless steel. If your existing openings are prepped for 4-1/2 inch hinges, no new mortising is needed.
4) Can I replace a standard butt hinge with a spring hinge to make a door self-closing?
That is exactly what a full mortise spring hinge is for. The SH94545 shares the 4-1/2 x 4-1/2 full mortise footprint of a standard commercial butt hinge, so it swaps into the same prep and adds closing force without hanging a surface closer on the door. Where you need a controlled sweep speed, latching check, or a hold-open, a door closer still does what a spring hinge cannot.
5) What is the difference between a single acting and a double acting spring hinge?
Single acting, which is what the SH94545 is, returns a door that swings one direction only, the normal case for an office, stairwell, or exterior opening. Double acting is for a door that swings both ways, like a cafe or saloon door; for that you want something like the Deltana DASH95 double action spring hinge or the Deltana DASHS double action saloon hinge instead. Putting a single acting hinge on a two-way door will not work.
6) My frames are prepped for square corner hinges. Is there a radius corner spring hinge instead?
Corner shape has to match the prep in the frame and door, or the hinge will not seat. For 1/4 inch radius corners, Orca Hardware offers a 4 x 4 x 1/4 inch radius corner spring hinge, and the Hager 1251 is a full mortise spring hinge with 1/4 inch round corners. For 5/8 inch radius, the Hager 1252 and the Orca 4 x 4 x 5/8 inch radius corner hinge cover it. Square corner options include the McKinney 1502 in 4-1/2 by 4-1/2 and the Orca 4 x 4 square corner hinge.
7) What is the closest equivalent to the Don-Jo SH94545 from another brand?
For a same-size swap, the McKinney 1502 is a square corner full mortise spring hinge in 4-1/2 by 4-1/2, medium duty. The Hager 1150 is a full mortise standard weight stainless steel spring hinge, which is the closest match on material. The Hager 1250 is the same style in steel rather than stainless, which is the option to look at for a dry interior opening. BEST also lists the 2060R in square corner and the RD2060R in radius corner, both standard weight with a removable pin.
8) What is the closest equivalent to the Don-Jo SH94545 spring hinge in a 4-1/2 inch by 4-1/2 inch size from another maker?
The McKinney 1502 is the nearest match in size and configuration: it is a square corner full mortise spring hinge in 4-1/2 inch by 4-1/2 inch, medium duty. The Don-Jo SH94545 is also a full mortise spring hinge at 4-1/2 inch by 4-1/2 inch, single acting and non-handed, in 0.134 gauge stainless steel with a 630 finish. If the existing mortise pocket is cut for a 4-1/2 inch square corner leaf, either drops into the same prep.
9) I need a stainless steel spring hinge but the door frame is prepped for round corners, not square. What do I use instead of the Don-Jo SH94545?
The Don-Jo SH94545 is a full mortise spring hinge in 4-1/2 inch by 4-1/2 inch stainless steel. For a frame already prepped with round corners, Hager offers the 1251 full mortise spring hinge with 1/4 inch round corners and the 1252 with 5/8 inch round corners, both standard weight steel construction. The Hager 1150 is the full mortise spring hinge in standard weight stainless steel if the corrosion resistance of stainless is the priority. Match the corner radius to what is cut into the frame so the leaf seats flush without filing.
10) Will the Don-Jo SH94545 work on a double acting door like a saloon or cafe door?
No. The Don-Jo SH94545 is a single acting spring hinge, meaning the door swings and returns in one direction only. For a door that must swing both ways, use a double action hinge such as the Deltana DASHS double action saloon hinge, sold each in 4 inch, 5 inch and 6 inch heights, or the Deltana DASH95 double action spring hinge with solid brass cover plates. These are a different swing function, not a size substitution, so confirm the leaf pattern before ordering.
11) The door is prepped for 3-1/2 inch hinges. Is there a spring hinge that size instead of the Don-Jo SH94545?
Yes. The Don-Jo SH94545 is a 4-1/2 inch by 4-1/2 inch hinge and will not fit a 3-1/2 inch mortise without recutting. For a 3-1/2 inch prep, the Deltana DSH35R4 is a single action spring hinge, 3-1/2 inch by 3-1/2 inch with a 1/4 inch radius, in steel. The Emtek 95013 is a 3-1/2 inch by 3-1/2 inch square corner spring hinge in plated steel, UL Listed and sold as a pair. Pick the radius or square corner to match the existing mortise.
12) I want the spring closer hidden so no hinge shows on the door. What is the alternative to the Don-Jo SH94545?
The SOSS invisible spring closer hinges conceal entirely within the door and frame edge. The SOSS 216IC Series is an invisible spring closer hinge with a 20 minute fire rating, heavy duty. The SOSS 218IC is a 7 inch heavy duty invisible spring closer hinge requiring a minimum door thickness of 1-3/4 inch, and the SOSS 220IC Series is a 7 inch invisible spring closer hinge with a 20 minute fire rating and a 2 inch minimum door thickness. The Don-Jo SH94545 is a surface-visible full mortise spring hinge in 4-1/2 inch by 4-1/2 inch, UL Listed for use in fire-rated door assemblies. The invisible units are routed into the door edge, so check the door thickness against the model before specifying.
13) The door is closing too hard. Can spring tension be adjusted after the hinge is installed?
Yes, and without pulling the hinge off the door. The SH94545 has tool-accessible spring tension adjustment, so an installer or maintenance tech can dial the closing force up or down in place. If a leaf is slamming or not pulling all the way to the latch, that adjustment is the fix rather than a different hinge.
14) Is the Don-Jo SH94545 spring hinge suitable for an exterior or washdown opening?
The body is stainless steel with a 630 finish, which is satin stainless. Stainless resists corrosion where plated steel hinges rust, so it holds up on exterior doors, kitchens, locker rooms, and healthcare areas that get wiped down. Self-lubricating bearings mean no oiling schedule, which matters on an opening you do not want to revisit.
15) How many spring hinges do I need per door?
Spring hinges are sold and installed per hinge, not per pair, and a door normally carries the same count as it would in butt hinges. The SH94545 is one hinge per order line, so a three-hinge opening takes three. On a taller or heavier leaf, adding tension across more than one spring hinge is how you get the door to latch reliably.
16) I want a self-closing door with no visible hardware. Is a mortise spring hinge the right choice?
A full mortise spring hinge like the SH94545 still shows a barrel on the edge of the door when it is closed. If you need nothing visible, an invisible spring closer hinge is the different product type: SOSS offers the 216IC with a 20 minute fire rating, the 218IC at 7 inches for doors 1-3/4 inches thick minimum, and the 220IC at 7 inches for doors 2 inches thick minimum, all heavy duty. Those require a router pocket in the door edge and frame rather than a flat hinge mortise.
17) Are the Pemko Markar FM400 and FS402 spring hinges a substitute for the Don-Jo SH94545?
They are not interchangeable. The Don-Jo SH94545 is an individual 4-1/2 inch by 4-1/2 inch full mortise spring hinge that sets into a hinge pocket, and multiple hinges carry a door. The Pemko Markar FM400 Series is a full mortise spring loaded continuous hinge with an 80 lb load capacity built for toilet partitions, and the Pemko FS402 Series is a spring loaded continuous hinge for toilet partitions with the same 80 lb load capacity. A continuous hinge runs the height of the door edge and needs a different prep entirely. Use the continuous units for partition doors and the SH94545 where the opening is prepped for individual mortise hinges.
18) What is the difference between the Don-Jo SH94545 and the Hager 1250 spring hinge?
Both are full mortise spring hinges of standard, medium duty weight. The difference is the body material: the Hager 1250 is standard weight steel construction, while the Don-Jo SH94545 is 0.134 gauge stainless steel with a 630 finish. Stainless matters on exterior openings, kitchens, wash-down areas and coastal sites; steel is the common choice for interior corridors. The Hager 1150 is that maker's stainless steel version of the same full mortise spring hinge if you want to stay with one brand across a job and still get stainless.
19) What spring hinge should I use if the door needs to be removed without unscrewing the hinges, unlike the Don-Jo SH94545?
The BEST 2060R is a plain bearing spring hinge with a removable pin in square corners, standard weight and medium duty, and the BEST RD2060R is the same removable pin plain bearing spring hinge with a radius corner. A removable pin lets the door be lifted off the frame at the pin rather than backing out the leaf screws. The Don-Jo SH94545 is a full mortise single acting spring hinge with self-lubricating bearings and field-adjustable spring tension. Choose the removable pin version where doors come off routinely for moving or servicing.
20) Is there a 4 inch spring hinge option if the Don-Jo SH94545 is too large for the door?
Yes. The Don-Jo SH94545 is 4-1/2 inch by 4-1/2 inch. Orca Hardware makes a 4 inch by 4 inch spring hinge in three corner styles: the 4040 Series square corner, the 4014 Series with a 1/4 inch radius corner, and the 4058 Series with a 5/8 inch radius corner, all medium duty. There is also an Orca 4 inch by 4 inch 5/8 inch radius corner hinge with a Z hole pattern for frames drilled to that pattern. Confirm the corner style and hole pattern against the existing mortise before switching sizes.
21) For a fire-rated opening, what UL Listed spring hinges are there besides the Don-Jo SH94545?
The Don-Jo SH94545 is UL Listed for use in fire-rated door assemblies and built to ANSI standard K51071F, in a 4-1/2 inch by 4-1/2 inch full mortise stainless steel body. The Design Hardware UL Spring Hinge is a medium duty UL spring hinge, and the Emtek 95013 is a UL Listed spring hinge in 3-1/2 inch by 3-1/2 inch with square corners in plated steel, sold as a pair. For an opening that must hold a fire label, verify the hinge size and quantity against the door manufacturer's listing before ordering.
22) Is the Don-Jo SH94545 a commercial grade hinge or a residential one?
It is rated commercial, built for high-traffic openings in offices, schools, healthcare facilities, retail, warehouses, multi-tenant residential, and government buildings. The 0.134 gauge stainless steel body and self-lubricating bearings are what carry that duty. For a lighter residential door, a smaller 3-1/2 inch spring hinge such as the Deltana DSH35R4 or the Emtek 95013 UL Listed pair is the more appropriate size.
23) Does the SH94545 hinge need oiling or maintenance once it is in service?
No lubrication schedule. The bearings are self-lubricating, so the hinge runs quiet without being greased. For a facility standardizing hinges across many openings, that plus the stainless body is the reason this gets specified over a plated steel hinge that needs attention.
24) What finish does the Don-Jo SH94545 come in, and will it match my other door hardware?
One finish only: 630, satin stainless steel. That is the standard commercial match for 630 lever trim, exit devices, and closers, and it sits close to a brushed chrome 626 without being identical. If your building is standardized on 630, this drops in without a finish mismatch on the hinge edge.
25) What is the exact model number to order for a 4-1/2 inch stainless spring hinge from Don-Jo?
Model SH94545 is the Don-Jo full mortise spring hinge at 4-1/2 by 4-1/2 inches in stainless steel, 630 finish, single acting and non-handed. That model designation covers it; there is no separate handing or corner suffix to specify.
26) How many Don-Jo SH94545 hinges do I get when I order, and does that differ from other brands?
Ordering conventions vary by maker, so read the unit before you order quantity. The Emtek 95013 spring hinge is sold as a pair, while the Deltana DASHS double action saloon hinge is sold each. The Don-Jo SH94545 is a 4-1/2 inch by 4-1/2 inch full mortise single acting spring hinge with a 630 stainless steel finish. On a spring hinge application the door typically needs more than one spring hinge to develop the closing force, so confirm the per-order count when comparing across brands.
How fast can I get the Don-Jo SH94545-630 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 Don-Jo SH94545-630 come with a warranty?
Absolutely. The Don-Jo SH94545-630 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 Don-Jo SH94545-630?
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
Why buy the Don-Jo SH94545-630 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!