Arrow 221 5A Springlatch Repla...
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Arrow 221 5A Springlatch Replacement Part for MK Series, 2-3/8" Backset, 2-1/4" x 1" Face, Square Corner, Antique Brass

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Model: 221 5A

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

$51.66
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Arrow 221 5A Springlatch Replacement Part for MK Series, 2-3/8" Backset, Square Corner, Antique Brass

The Arrow 221 5A is a UL Listed springlatch replacement part engineered for the Arrow MK Series lockset line. Featuring a 2-3/8" backset and a 2-1/4" x 1" square corner face plate finished in Antique Brass, this commercial-grade latch is precision-manufactured to restore smooth, reliable latching function in compatible MK Series door hardware applications. Its square corner faceplate ensures a clean, professional fit in standard commercial door preparations.

Key Features

  • Precise Backset Measurement: 2-3/8" backset ensures accurate fitment in standard commercial door preparations for MK Series locksets.
  • Exact Faceplate Dimensions: 2-1/4" x 1" square corner face plate provides a clean, flush installation with no modification required.
  • Square Corner Design: Square corner faceplate configuration matches standard commercial door mortise preparations for a professional, seamless finish.
  • Antique Brass Finish: Antique Brass finish coordinates with matching Arrow MK Series trim and hardware for a cohesive aesthetic.
  • MK Series Compatibility: Designed specifically as a replacement part for Arrow MK Series locksets, ensuring a drop-in fit and reliable operation.
  • UL Listed: UL Listed certification confirms this springlatch meets rigorous safety and performance standards for commercial applications.
  • Commercial-Grade Construction: Built to Arrow's commercial product specifications, providing dependable performance in high-use environments.

Certifications & Compliance

  • UL Listed
  • Commercial Grade

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: 221 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 MK Series?

Arrow door hardware parts are manufactured to exacting commercial standards, with UL Listed certification validating their safety and reliability. The 221 5A springlatch is a purpose-built replacement component that ensures MK Series locksets continue to perform at the level expected in demanding commercial environments, minimizing downtime and maintaining door security integrity.

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:
221 5A
Features:
Arrow Parts

Arrow 221 5A – Frequently Asked Questions

1) Will the Arrow 221 5A springlatch fit my existing lock prep, or do I need to redrill?
The 221 5A is built to a 2-3/8 inch backset with a 2-1/4 x 1 inch square corner faceplate, which matches standard commercial door prep, so it goes in without modification. If the door was bored at a 2-3/4 inch backset, this latch is the wrong one, since the backset is fixed rather than adjustable.
2) My faceplate has rounded corners. Can I still use this latch?
No. The 221 5A comes with a square corner faceplate only, which suits a square-cut mortise in the door edge. A door edge routed for a radius corner plate would leave a gap, so you need a drive-in or radius corner latch instead.
3) I need a latch that works at either 2-3/8 or 2-3/4 backset. What are my options?
The Arrow 221 5A is fixed at 2-3/8 inches. For an adjustable backset, the Deltana DLP23875 drive-in latch covers 2-3/8 or 2-3/4 inch and is a passage/privacy function, and the Deltana DLE23875 is the entry-function drive-in equivalent; both are listed for 1-3/8 to 2 inch doors. Note those are drive-in style, so they suit a door bored without a faceplate mortise, not an MK Series lockset.
4) What is the closest cross-brand equivalent to the Arrow 221 5A springlatch for a 2-3/8 inch backset with a square corner face?
The Kwikset 84290 is the nearest peer in form: it is a square corner plainlatch with a 2-3/8 inch backset and a UL designation, matching the Arrow 221 5A on backset, square corner faceplate geometry, and UL Listing. The difference that decides the order is the lock it serves - the Arrow 221 5A is built as a replacement part for the Arrow MK Series lockset line, so it is the drop-in choice when the chassis in the door is an MK Series. The Kwikset latch is a Kwikset component. If you are rebuilding MK Series locksets, stay with the 221 5A; if the door has Kwikset cylindrical trim, the 84290 is the square corner latch to look at.
5) I need a latch that will work whether the door is bored at 2-3/8 or 2-3/4 inch - what should I use instead of the Arrow 221 5A?
The Arrow 221 5A is a fixed 2-3/8 inch backset latch, so it only suits doors bored at 2-3/8. For an opening where the backset is uncertain or varies across a run of doors, the Kwikset 83518 is an adjustable square drive UL 3 hour latch, and the Deltana DLP23875 is a drive-in latch with an adjustable backset of 2-3/8 or 2-3/4 inches in a passage/privacy function. Measure once on a sample door if you can - a fixed-backset latch like the 221 5A eliminates the adjustment mechanism, which is why it is the specified part for MK Series rebuilds.
6) Is this latch UL Listed for use in a commercial building?
Yes, the Arrow 221 5A springlatch is UL Listed and specified as a commercial-grade part, which is why it shows up in offices, schools, healthcare, retail and government work where the opening hardware has to stay compliant after a repair.
7) Is a springlatch the right choice, or do I need a deadlatch or deadbolt latch?
A springlatch like the 221 5A retracts and springs back as the door closes, which is what a passage or keyed lever body drives. If you need the anti-shim deadlocking feature or a separate bolt, that is a different part: a deadbolt latch such as the Emtek LC9-DBLTCH is a motorized deadbolt latch, and Kwikset's 83518 RCAL adjustable square drive latch is a separate UL 3 hour item. Those are not interchangeable with an MK Series springlatch.
8) For a multi-family or school where I keep spares on the shelf, does this one latch cover a whole building of MK Series doors?
Only the openings prepped at a 2-3/8 inch backset with square corner faceplates and finished in 609 Antique Brass. Buildings commonly mix 2-3/8 and 2-3/4 backsets, so check a couple of doors before you standardize a spare on this part number.
9) Is the Emtek 83228 a substitute for the Arrow 221 5A square corner latch?
No - they are different parts despite both being square corner components. The Emtek 83228 is a faceplate and screws only, for a tubular pocket door privacy latch, so there is no latch bolt or case in the box. The Arrow 221 5A is a complete springlatch with a 2-1/4 inch by 1 inch square corner face and a 2-3/8 inch backset for Arrow MK Series locksets. Order the 83228 when a pocket door privacy latch faceplate is damaged and the latch body is fine; order the 221 5A when the latch itself needs replacing.
10) What latch should I order if the door I am working on takes a deadbolt rather than a springlatch like the Arrow 221 5A?
The Arrow 221 5A is a springlatch - a spring-returned latch bolt that retracts when the knob or lever is turned, built for Arrow MK Series locksets. Deadbolt openings take a different part. The Emtek LC9-DBLTCH is a motorized deadbolt latch in the EMPowered series for electrified deadbolt applications, and the Kwikset 83521 is a plain latch with a UL 3 hour rating catalogued for BBL, KNL, CNL and PLL trim. Confirm which bore in the door you are replacing - a latch prepped for a deadbolt bore will not accept a springlatch and vice versa.
11) The door has no mortise pocket for a faceplate - what replaces the Arrow 221 5A in that case?
The Arrow 221 5A carries a 2-1/4 inch by 1 inch square corner face plate, which needs a square corner mortise in the door edge to sit flush. Where the edge is unprepped, a drive-in latch avoids that step: the Deltana DLE23875 is a drive-in latch in an entry function and the Deltana DLP23875 is a drive-in latch in passage/privacy, both listing a door thickness range of 1-3/8 to 2 inches with an adjustable 2-3/8 or 2-3/4 inch backset. Note these are Deltana latches, not MK Series parts, so they are for new or non-Arrow openings rather than an MK Series rebuild.
12) Do the Kwikset UL 3 hour latches and the Arrow 221 5A carry the same listing?
They are described differently. The Arrow 221 5A is UL Listed, stated as a commercial grade replacement part for Arrow MK Series locksets. The Kwikset 83521 plain latch and the Kwikset 83518 adjustable square drive latch are both designated UL 3 hour. If your specification calls out a fire door assembly with a stated hourly rating, take the hour figure from the latch designation and confirm it against the door label before you commit the order.
13) What finish does the Arrow 221 latch come in, and will it match my door trim?
One finish is offered: 609 Antique Brass. That matches Arrow MK Series trim in the same finish. Since only the faceplate shows once installed, the finish only matters on the door edge, not the lever side.
14) What is the exact Arrow part number for this MK Series springlatch?
Arrow model 221 5A, in 609 Antique Brass. Order it by that model number; the 5A designation is part of the latch identity, not a separate option.
How fast can I get the Arrow 221 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 221 5A come with a warranty?
Absolutely. The Arrow 221 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 221 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 221 5A from ZenSupply?
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