Arrow 111 5A Deadlatch Replace...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$27.85
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Arrow 111 5A Deadlatch Replacement Part, MK Series, 2-3/8" Backset, 2-1/4" x 1" Face, Square Corner

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Model: 111 5A

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

$27.85
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Arrow 111 5A Deadlatch Replacement Part, MK Series, 2-3/8" Backset, Square Corner

The Arrow 111 5A is a commercial-grade deadlatch replacement part designed for the MK Series lock line. Featuring a 2-3/8" backset and a 2-1/4" x 1" face plate with a square corner profile, this deadlatch is finished in Antique Brass and is engineered to restore proper latching function in compatible MK Series locksets. Suited for commercial door hardware applications where precise dimensional fit and reliable operation are essential.

Key Features

  • Precise Backset Dimension: 2-3/8" backset ensures accurate fit in MK Series door preparations without additional modification.
  • Defined Face Plate Size: 2-1/4" x 1" face plate provides a clean, flush finish against the door edge for a professional appearance.
  • Square Corner Profile: Square corner face design matches standard commercial door mortise preparations for the MK Series.
  • MK Series Compatibility: Engineered specifically as a replacement part for Arrow MK Series locksets, ensuring correct form and function.
  • Antique Brass Finish: Antique Brass finish coordinates with existing MK Series hardware for a consistent aesthetic.
  • Commercial-Grade Construction: Designed for commercial door hardware applications requiring dependable and repeatable latching performance.
  • Genuine Arrow Part: Authentic Arrow replacement component, maintaining manufacturer quality and compatibility standards.

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 5A
  • 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 111 5A?

Arrow MK Series replacement parts are manufactured to exact dimensional tolerances, with the 111 5A deadlatch delivering a precise 2-3/8" backset and 2-1/4" x 1" square corner face that directly matches original hardware specifications. Choosing a genuine Arrow replacement component ensures compatibility, consistent finish matching, and reliable commercial-grade latching performance in demanding door hardware applications.

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 5A
Features:
Arrow Parts

Arrow 111 5A – Frequently Asked Questions

1) Will the Arrow 111 5A deadlatch fit my Arrow MK Series lockset?
That's exactly what it's built for. The Arrow 111 5A is the deadlatch replacement for the Arrow MK Series lock line, with a 2-3/8 inch backset and a 2-1/4 x 1 inch square corner face that matches the original MK Series door and edge prep. If your existing MK lock uses a 2-3/8 inch backset and a square corner faceplate, it drops in with no re-mortising.
2) My door is bored for a 2-3/4 inch backset. Can I use the Arrow 111 5A?
No. The 111 5A is a fixed 2-3/8 inch backset latch, so it will not reach the bore centerline on a 2-3/4 inch prep. 2-3/8 and 2-3/4 are the two standard commercial backsets, and you need the version matching your door. For a non-Arrow opening where you want flexibility, the Deltana DLP23875 drive-in latch is adjustable between 2-3/8 and 2-3/4 inches.
3) Does the Arrow 111 5A have a radius or square faceplate?
Square corner. The 2-1/4 x 1 inch face is a square corner profile, which is the standard commercial mortise prep on MK Series doors. If the existing latch you pulled out has rounded corners, this face will leave a visible gap at the corners of the mortise unless you square the pocket.
4) Is the Kwikset 84290 square corner plainlatch a substitute for the Arrow 111 5A deadlatch?
They are not the same type of latch. The Arrow 111 5A is a deadlatch built as a replacement part for Arrow MK Series locksets, with a 2-3/8 inch backset and a 2-1/4 inch by 1 inch square corner face. The Kwikset 84290 is a square corner plainlatch with a 2-3/8 inch backset. A plainlatch has no deadlocking plunger alongside the latchbolt, so it will not restore the deadlatching action the MK Series lockset was built around, and it is a Kwikset part rather than an Arrow MK Series component. If the opening needs the deadlatch function, stay with the 111 5A.
5) Is this a deadlatch or a plain latch?
It's a deadlatch, meaning it includes the auxiliary deadlocking plunger that prevents the latchbolt from being shimmed or carded once the door is closed against the strike. That matters on exterior and tenant entry doors. A plain latch, like the Kwikset 84290 square corner plainlatch, has no deadlocking feature and is used on non-keyed or interior functions.
6) Can I replace just the latch instead of the whole Arrow MK lockset?
Yes, if the failure is in the latching. The 111 5A is sold as a standalone replacement part for the MK Series, so a worn or binding latch can be swapped without replacing the cylinder, trim or chassis. Keying and lever trim stay as they are. If the lever or cylinder is the problem, the latch won't fix it.
7) What are my options if I need a fire-rated latch instead of the Arrow 111 5A?
The 111 5A is specified as an MK Series dimensional replacement, not as a rated assembly. If your opening requires a UL rated latch, the Kwikset 83518 adjustable square drive and the 83521 plain latch are both listed as UL 3 hour, and the Kwikset 84290 square corner plainlatch at 2-3/8 inch backset is UL listed. Those are different lock lines, so they won't retrofit an Arrow MK chassis.
8) My latch is fine but the faceplate is damaged. Do I have to buy the whole Arrow 111 5A?
The Arrow 111 5A is supplied as a complete deadlatch assembly with its 2-1/4 inch by 1 inch square corner face, so it replaces latch and face together. A faceplate-only part exists in other lines for other applications, such as the Emtek 83228 faceplate and screws for a tubular pocket door privacy latch with square corners, but that is a pocket door privacy component and will not serve an Arrow MK Series lockset. For an MK Series opening, the 111 5A assembly is the part that restores both fit and function.
9) What finish does the Arrow 111 5A come in?
One finish: 609 Antique Brass. On a latch the faceplate is the only part that shows once the door is closed, so if the rest of the trim on your MK Series openings is antique brass the edge will match. Mixing a bright or satin latch face into an antique brass opening is the usual complaint, and this avoids it.
10) Is the Arrow 111 5A suitable for high-traffic commercial doors or just residential?
Commercial. Arrow classifies the 111 5A as a commercial-grade MK Series replacement part, and it's used in office buildings, schools, healthcare, retail, warehouses, multi-tenant residential and government buildings. For property managers standardizing a building, keeping the same MK latch across openings means one part number on the shelf for every future service call.
11) Is the Emtek LC9-DBLTCH an alternative to the Arrow 111 5A?
No. The Emtek LC9-DBLTCH is a motorized deadbolt latch in the EMPowered series, an electrified deadbolt component. The Arrow 111 5A is a mechanical deadlatch replacement part for Arrow MK Series locksets with a 2-3/8 inch backset and square corner face. They serve different functions, and the Emtek part belongs to an electrified deadbolt system rather than a mechanical MK Series lockset.
How fast can I get the Arrow 111 5A 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 5A come with a warranty?
Absolutely. The Arrow 111 5A 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 5A?
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 5A 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.
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