Stanley Security Five Knuckle ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$48.64
$36.10
Stanley Security Five Knuckle Architectural Hinge, Brass, Bronze or Stainless Steel, Full Mortise, Standard Weight, 4" by 4", Square Corner

Stanley Security Five Knuckle Architectural Hinge, Brass, Bronze or Stainless Steel, Full Mortise, Standard Weight, 4" by 4", Square Corner

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Model: F191 4X4 32
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$48.64
$36.10
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Stanley Security Five Knuckle Architectural Hinge, Brass, Bronze or Stainless Steel, Full Mortise, Standard Weight, 4" by 4", Square Corner

The Stanley Security F191 4×4 is a premium architectural hinge designed for both internal and external doors where durability and aesthetics matter. Crafted in a five-knuckle, full-mortise configuration, this hinge uses plain bearings and is standard-weight steel (with alternate materials/finishes available) to deliver reliable operation under normal to moderate usage. Featuring a square-corner design and reversible (removable-pin) construction, it offers flexibility for many door/frame setups. Available in finishes such as Satin Stainless Steel (US32D / 630), Oil Rubbed Bronze (US10B), Bright Brass (US3 / 605), Satin Chrome (US26D / 626), among others.

This hinge is suitable for commercial and architectural applications—offices, multi-unit dwellings, public buildings—especially where uniform hardware appearance and solid performance are required.

Specifications

Specification Detail
Model / SKU F191 4×4
Hinge Type Full-Mortise Butt Hinge, Five Knuckle
Bearing Type Plain Bearing
Material Steel base (alternate brass/bronze or stainless versions in some SKUs)
Finish Options US32D – Satin Stainless Steel; US10B – Oil Rubbed Bronze; US3 – Bright Brass; US26D – Satin Chrome
Size 4-inch height × 4-inch width; square corner
Weight Classification Standard Weight
Pin Type Typically removable pin (for maintenance or removal)
Mounting Style Full Mortise; for use on both wood and hollow-metal doors and frames; includes template screw-hole layout
Gauge / Thickness Approx .123-.130″ when steel base; varies by finish/material
Typical Use-Cases Internal/external doors without door closers; applications requiring architectural appearance (hotels, offices, multi-unit housing)

Benefits and Applications

  • Provides strong & reliable performance under regular usage in commercial settings.

  • Matching finish and design styles across hardware lines ensure visual consistency.

  • Removable pin option aids maintenance or replacement without full door removal.

  • Plain-bearing design keeps cost lower while giving sufficient performance where high speed/frequent motion (door closers) isn’t required.

  • Multiple finish options allow matching to decorative hardware themes or existing installations.

Manufacturer Resources

Product Specs

Subcategory:
Hinges
Series:
Architectural Hinges
Hinge Type:
Full Mortise
Knuckles:
5
Bearing Type:
Concealed Bearing
Corner Style:
Square Corners
Product Group:
Door Hinges and Pivots
Product Subgroup:
Full Mortise Hinges
Product Type:
Full Mortise Hinges
Duty Level:
Medium Duty
Commercial/Residential:
Commercial
Hinge Pin Type:
Removable
Product Model:
F191
Product Category:
Door Hinges and Pivots
Department:
Door Hardware

Stanley Security F191 4X4 32 – Frequently Asked Questions

1) Is the Stanley F191 a 4 inch or 4-1/2 inch hinge, and does that matter for my door?
The F191 covered here is the 4 inch by 4 inch size with square corners. That size is normally used on 1-3/8 inch interior doors; 1-3/4 inch commercial doors typically take a 4-1/2 inch hinge so the barrel clears the trim and the door swings free. If your existing hinges mortise out at 4-1/2 by 4-1/2, a 4 inch hinge will not fill the prep. Comparable 4-1/2 by 4-1/2 square corner five knuckle options include the McKinney TCA2314 and the Don-Jo BB74545.
2) Will a square corner hinge drop into my existing door prep?
Only if the existing mortise is square cut. Square corner hinges are for doors and frames machined flat in the corners, which is standard on hollow metal and on wood doors routed with a square chisel. If your current mortise has rounded corners (typical of a router with no corner chisel work), a square corner leaf will leave gaps at the ends and you want a radius corner hinge instead. The F191 is a full mortise hinge, so both leaves mortise in, one into the door edge and one into the frame rabbet.
3) Does the Stanley F191 hinge have to be handed when I order it?
No. It uses a removable pin, which makes the hinge reversible, so the same part works on a left hand or right hand door. You set the swing by which way you hang it, not by what you order. The only thing you specify is the finish.
4) Can I use the Stanley F191 on a hollow metal door and frame, or is it wood doors only?
Both. The F191 mounts full mortise on wood or hollow metal doors and frames, and it comes with a template screw hole layout, meaning the holes fall on the standard machine spacing hollow metal frames are punched and tapped for. On wood doors you are driving wood screws into the routed mortise.
5) The F191 is medium duty - what do I use on a high traffic door with a closer?
Step up to a heavy weight hinge. The Stanley Security CB199 is a full mortise concealed bearing heavy weight hinge in the same Architectural Hinges series, so the concealed bearing look carries over. The McKinney TCA3386 is a heavy weight square corner five knuckle full mortise hinge in 4-1/2 by 4-1/2. For doors that also need pivot reinforcement, the BEST CB223 is a stainless steel concealed bearing heavy weight pivot reinforced hinge for beveled edge doors. The F191 is catalogued medium duty and the description calls out doors without closers.
6) What looks like a Stanley F191 substitute but will not work in a standard opening?
Three to rule out. The BEST CB248 is a full mortise concealed bearing swing clear hinge for square edge doors and the Hager 1260 is a full mortise swing clear hinge with a five knuckle plain bearing design - swing clear geometry throws the door fully out of the opening for clear width, which changes how the door sits versus a conventional hinge like the F191. The Hager WTBB1168 is a 4-1/2 by 6 inch wide throw ball bearing hinge, sized to clear deep trim rather than to drop into a standard mortise. And the ACSI 5BB1 is a 4-1/2 by 4-1/2 five knuckle ball bearing hinge with concealed electric through-wire, which is for powering electrified door hardware.
7) My door openings take a 4-1/2 inch hinge, not 4 inch - what should I order instead of the Stanley F191?
For a 4-1/2 by 4-1/2 square corner cutout, the Don-Jo BB74545 is a steel five knuckle full mortise ball bearing hinge in that size, and the McKinney TCA2314 and TCA2317 are square corner five knuckle full mortise hinges in 4-1/2 by 4-1/2 as well. If the door leaf is stainless steel the Don-Jo BB94545 is the 4-1/2 by 4-1/2 stainless square corner version, and the BB84545 is the brass-body equivalent in satin chrome. The Stanley F191 discussed here is the 4 inch by 4 inch square corner leaf, so it will not fill a 4-1/2 inch mortise.
8) What finishes does the Stanley F191 architectural hinge come in?
Six finishes: 605 bright brass, 613 satin bronze oil rubbed, 625 bright chrome, 626 satin chrome, 629 bright stainless steel, and 630 satin stainless steel. For a building where you are standardizing, 626 satin chrome and 630 satin stainless are the two that match most commercial lever and closer hardware; 613 and 605 are the decorative choices for hotel and multi-family corridors.
9) Plain bearing or ball bearing hinge, which do I need for an office door?
For a normal office or unit door with no closer and moderate traffic, a plain bearing hinge like the F191 is the right spend. Bearings earn their keep when a closer is pulling the door shut hundreds of times a day or the door is heavy. If you want bearings in the same size class, the Don-Jo BB74545 is a 4-1/2 by 4-1/2 steel ball bearing five knuckle square corner hinge, and the ACSI 5BB1 is a ball bearing hinge with concealed electric through wire if the opening also needs power transfer to an electrified lock.
10) Can I take the door down without unscrewing the hinges?
Yes. The pin is removable, so you drive it up and out and lift the door off the leaves. That is the practical reason maintenance crews spec this type: you can pull a door for painting, carpet, or lock work without disturbing the mortise or the screw holes. Note that a removable pin gives no security benefit on an out-swinging exterior door; for that you want a non-removable pin or a security stud hinge.
11) Is the Hager 1279 a substitute for the Stanley F191?
They are close in class. The Hager 1279 is a full mortise commercial hinge with five knuckles and a plain bearing design, carried as medium duty - the same duty level the Stanley F191 carries. The difference is the bearing: the 1279 is specified as plain bearing, while the F191 is listed with a concealed bearing. If the spec on your drawing calls out concealed bearings, the 1279 will not satisfy it; if it just calls for a five knuckle full mortise commercial hinge, either answers.
12) Is the Stanley F191 a commercial hinge or a residential one?
Commercial. It is built for offices, multi-unit dwellings, hotels and public buildings where the hardware has to look uniform across a lot of openings and hold up to daily use. If you are doing light residential work, the Hager 1541 is a full mortise plain bearing residential hinge in stainless with a five knuckle design.
How fast can I get the Stanley Security F191 4X4 32 delivered?
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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 Stanley Security F191 4X4 32 come with a warranty?
Absolutely. The Stanley Security F191 4X4 32 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 Stanley Security F191 4X4 32?
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