Arrow 111 Deadlatch MK Series ...
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Arrow 111 Deadlatch MK Series Replacement Part with 2-3/8" Backset, 2-1/4" x 1" Face, Square Corner, Bright Brass

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Model: 111 26D

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

$27.85
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Arrow 111 Deadlatch MK Series Replacement Part with 2-3/8" Backset, 2-1/4" x 1" Face, Square Corner, Bright Brass

The Arrow 111 Deadlatch is a precision-engineered replacement component for the MK Series, designed to restore dependable latching performance in commercial door applications. Featuring a 2-3/8" backset and a 2-1/4" x 1" face plate with a square corner profile, this deadlatch delivers a clean, accurate fit for compatible MK Series locksets. Finished in Bright Brass, it provides both functional reliability and a polished appearance suited to professional-grade installations.

Key Features

  • Precise Backset Dimension: 2-3/8" backset ensures accurate alignment and compatibility with standard MK Series door preparations.
  • Exact Face Plate Sizing: 2-1/4" x 1" face dimensions provide a flush, professional fit within the door edge mortise.
  • Square Corner Profile: Square corner face plate design matches standard commercial door prep requirements for a clean, finished installation.
  • Bright Brass Finish: Bright Brass finish coordinates with matching MK Series hardware for a consistent, professional appearance.
  • MK Series Compatibility: Engineered specifically as a replacement part for Arrow MK Series locksets, ensuring precise fitment and reliable function.
  • Commercial-Grade Construction: Built to Arrow's commercial quality standards, suitable for demanding door hardware applications in professional environments.
  • Direct Replacement Part: Designed as a drop-in replacement to restore original performance without modification to existing door preparation.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Latches
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 111
  • Features: Arrow Parts

Typical Applications

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

Why Arrow MK Series?

Arrow MK Series components are manufactured to commercial-grade standards, delivering consistent fitment and reliable latching performance in professional door hardware applications. The Arrow 111 Deadlatch is a direct replacement part engineered for precision compatibility with MK Series locksets, making it an ideal solution for maintenance and restoration of commercial door hardware without requiring door modification or custom fitting.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Latches
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
111
Features:
Arrow Parts

Arrow 111 26D – Frequently Asked Questions

1) Will the Arrow 111 deadlatch fit a door prepped with a 2-3/8 inch backset?
Yes. The Arrow 111 is a 2-3/8 inch backset deadlatch, which is the shallower of the two standard bored-lock backsets (the other being 2-3/4 inch). If your existing cross-bore centers 2-3/4 inches from the door edge, this latch will not reach; you need the 2-3/4 inch version instead.
2) What size faceplate does the Arrow 111 deadlatch have, and will it drop into my existing mortise?
The face measures 2-1/4 x 1 inch with a square corner profile, which matches standard commercial door edge prep. If the door edge is already routed for a square corner 2-1/4 x 1 inch latch face, it drops in without re-routing. A door prepped for a radius (round) corner faceplate would need the corners cleaned up or a radius-corner latch.
3) Is the Arrow 111 a replacement latch for MK Series locksets?
That is exactly what it is for. The 111 deadlatch is built as a direct replacement component for Arrow MK Series locksets, so a maintenance tech can restore latching on an existing MK lock without changing the door prep or the trim.
4) Is the Kwikset 84290 square corner plainlatch an equivalent to the Arrow 111 deadlatch?
They share a 2-3/8 inch backset and a square corner face, but they are not the same latch. The Arrow 111 is a deadlatch built as a direct replacement part for Arrow MK Series locksets, so it carries the auxiliary deadlocking function. The Kwikset 84290 is a plain latch with a 2-3/8 inch backset and square corner face and is UL listed. If the opening needs the deadlatching plunger that an MK Series lockset was built around, the Arrow 111 is the part to order; a plain latch is the choice where a simple spring latch is all the lockset calls for.
5) I need a latch with a UL fire rating for a rated opening - what are my options besides the Arrow 111?
For a rated opening, look at the Kwikset RCAL latches: the 83518 is an adjustable square drive latch listed UL 3 hour, and the 83521 is a plain latch listed UL 3 hour for BBL, KNL, CNL and PLL trim. The Arrow 111 is a commercial deadlatch built specifically to replace the latch in an Arrow MK Series lockset, so it is chosen on MK Series fitment rather than on a stated hour rating. If the drawing calls out a fire rating, specify from the Kwikset RCAL latches; if you are restoring an existing MK Series lockset, the Arrow 111 is the matching component.
6) What finishes does the Arrow 111 deadlatch come in for matching the rest of the lock?
Six finishes: 605 Bright Brass, 606 Satin Brass, 612 Satin Bronze, 613 Satin Bronze Oil-Rubbed, 626 Satin Chrome, and 630 Satin Stainless Steel. For a repair, pick the same BHMA number as the existing MK lockset so the latch face matches the knob or lever trim on the door.
7) What is the difference between a deadlatch and a plain latch when replacing a commercial lock?
A deadlatch, like the Arrow 111, carries an auxiliary deadlocking plunger alongside the latchbolt so the bolt cannot be shimmed or carded back once the door is closed. A plain latch, such as the Kwikset 84290 square corner plainlatch, has no deadlocking feature and is used behind passage or privacy trim. If the MK lock on your door is a keyed entry function, replace it with the deadlatch.
8) Can I use an adjustable-backset latch instead of ordering the exact Arrow 111?
Adjustable latches exist, for example the Deltana DLP23875 drive-in latch, which sets to either 2-3/8 or 2-3/4 inch and fits doors 1-3/8 to 2 inches thick, but it is a passage/privacy latch and a drive-in body rather than a faceplate latch. For an Arrow MK Series keyed lockset with a square corner faceplate mortise, order the 111 so the hub engagement and face fit are correct.
9) I am not sure whether the doors are 2-3/8 or 2-3/4 backset - is there an adjustable alternative?
The Arrow 111 is fixed at a 2-3/8 inch backset, so it fits only 2-3/8 inch preps. Where the backset varies across a group of doors, the Deltana DLP23875 drive-in latch adjusts between 2-3/8 inch and 2-3/4 inch in a passage/privacy function, and the Kwikset 83518 RCAL is an adjustable square drive latch listed UL 3 hour. Note the Deltana is a drive-in style rather than a face plate latch, so the door edge prep differs.
10) Will the Emtek 83228 square corner faceplate work as a replacement for the Arrow 111?
No. The Emtek 83228 is a faceplate and screws for a tubular pocket door privacy latch - it is the cover plate only, not a latch mechanism. The Arrow 111 is the complete deadlatch assembly with its 2-1/4 inch by 1 inch square corner face, sized to drop into an existing Arrow MK Series prep and restore latching. Order the Arrow 111 when the latch itself has failed; a faceplate alone only addresses a damaged or mismatched cover.
11) What should I look at if the opening needs a motorized or electrified latch instead of a mechanical one?
The Arrow 111 is a purely mechanical deadlatch, a replacement component for Arrow MK Series locksets with no electrical function. For an electrified opening, the Emtek LC9-DBLTCH is a motorized deadbolt latch in the EMPowered series. That is a deadbolt latch rather than a spring deadlatch, so it addresses a deadbolt bore and access control wiring rather than the latch bore of an MK Series lockset.
12) Is this deadlatch suitable for a school or hospital door, or is it residential grade?
It is a commercial part. Arrow lists the 111 as commercial-use door hardware, and it is used in office buildings, schools, healthcare facilities, retail, warehouses, multi-tenant residential, and government buildings. For a house door with a residential bored lock, a drive-in latch like the Deltana DLE23875 entry latch is the more typical choice.
13) I need the latch to match existing bright brass and satin chrome hardware across a building - which latch gives the most finish choices?
The Arrow 111 deadlatch is offered in six architectural finishes: 605 Bright Brass, 606 Satin Brass, 612 Satin Bronze, 613 Satin Bronze Oil-Rubbed, 626 Satin Chrome and 630 Satin Stainless Steel, so the exposed face plate can be matched to MK Series trim already on the doors. Comparable latches such as the Kwikset 84290 square corner plainlatch and the Deltana DLE23875 drive-in latch are specified on function and backset rather than a finish range of that breadth.
How fast can I get the Arrow 111 26D 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 Arrow 111 26D come with a warranty?
Absolutely. The Arrow 111 26D 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 Arrow 111 26D?
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 Arrow 111 26D from ZenSupply?
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