Schlage Residential 12-321 B S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$44.00
$27.78
Schlage Residential 12-321 B Series Dual Option Deadbolt Latch, 1" x 2-1/4", Round Corner and Drive-in standard configuration

Schlage Residential 12-321 B Series Dual Option Deadbolt Latch with Adjustable Backset

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Model: 12-321-619
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$44.00
$27.78
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Schlage 12-321 B Series Dual Option Deadbolt Latch

Replacement latch assembly for all functions of the Schlage B-Series deadbolt. Adjustable for 2-3/8" or 2-3/4" backsets. The drive-in faceplate is staked on and ships as a complete, ready-to-install unit. Faceplate is available in Satin Chrome (626) only.

Specifications

  • Backset: Adjustable 2-3/8" or 2-3/4"
  • Faceplate Dimensions: 1" W x 2-1/4" L, 1/4" radius round corner
  • Latch Diameter: 1"
  • Faceplate Type: Drive-in, staked on
  • Faceplate Finish: Satin Chrome (626)
  • Construction: Stainless steel
  • Warranty: Limited Lifetime Mechanical/Finish

Compatibility

Designed for use with all Schlage B-Series deadbolt functions. Confirm door preparation backset before ordering. Refer to Schlage B-Series installation documentation for integration guidance.

Common Applications

  • Replacement latch for Schlage B-Series deadbolts
  • Residential new construction and retrofit
  • Multi-unit housing maintenance
  • Locksmith service and repair

Manufacturer Resources

Product Specs

Warranty:
Limited Lifetime Mechanical/Finish
Product Group:
Parts and Accessories
Product Subgroup:
Lock Parts and Accessories
Product Type:
Latches
Commercial/Residential:
Residential
Subcategory:
Lock Parts and Accessories
Product Substrate:
Stainless Steel
Product Category:
Parts and Accessories
Department:
Door Hardware

Schlage Residential 12-321-619 – Frequently Asked Questions

1) Will the Schlage 12-321 deadbolt latch fit a 2-3/8 inch or a 2-3/4 inch backset door prep?
Both. The 12-321 is a dual option latch that adjusts between 2-3/8 and 2-3/4 backsets, so one part covers either bore layout you find in the door. That is the whole point of stocking it: you don't have to know the backset before you get to the opening, and the two common residential backsets are the only two you'll normally meet.
2) Which Schlage deadbolts does the 12-321 latch work with?
All functions of the Schlage B-Series deadbolt line, single cylinder, double cylinder, or one-sided. It is sold as a complete assembly with the faceplate already staked on, so it drops in as the replacement latch for a B-Series deadbolt without any further parts.
3) Is the 12-321 a drive-in latch or a face-mounted plate latch?
Drive-in. The 1 inch diameter latch body drives straight into a 1 inch bore with the round corner faceplate staked onto it, so there is no separate faceplate to mortise into the door edge and no faceplate screws. If your door edge is already mortised for a flat plate latch, this one will sit proud of that prep and you want a plate-style latch instead.
4) Can I use the 12-321 as the latch for a knob or lever instead of a deadbolt?
No. The 12-321 is a deadbolt latch, so it throws a solid bolt with no bevel and no spring return, and it will not latch a door closed on its own. For an adjustable backset drive-in latch on an entry knob or lever, the Deltana DLE23875 is an entry function drive-in latch; for a passage or privacy set, the Deltana DLP23875 covers those functions with the same 2-3/8 or 2-3/4 adjustable backset.
5) I need a deadbolt latch for a fire rated door. Is the Schlage 12-321 the right one?
The 12-321 does not carry a fire rating in its spec. If the opening needs a rated latch, the Kwikset 83518 is an adjustable square drive latch with a UL 3 hour rating, and the Kwikset 84290 is a square corner plain latch at a fixed 2-3/8 backset with a UL listing. Check that the square corner faceplate matches your door edge prep before you order either one.
6) What is the difference between the Schlage 12-321 deadbolt latch and the Deltana DLE23875 drive-in latch?
They are different classes of latch. The Schlage 12-321 is a deadbolt latch built for Schlage B-Series deadbolt functions, adjustable for a 2-3/8 or 2-3/4 backset, with a 1 inch diameter latch and a 1 inch by 2-1/4 inch round corner faceplate staked on as a complete unit. The Deltana DLE23875 is a drive-in latch with an Entry function, rated for doors 1-3/8 to 2 inches thick. Entry means a spring latch that retracts with a knob or lever, so it belongs in a keyed knob or lever bore, not in a deadbolt bore. If the door has a separate deadbolt above the handle, the 12-321 is the part that goes in the upper hole.
7) I need an adjustable drive-in latch for a passage or privacy door, not a deadbolt. What should I order?
The Deltana DLP23875 is the drive-in latch for that opening. It has a Passage/Privacy function with an adjustable 2-3/8 or 2-3/4 inch backset and fits doors 1-3/8 to 2 inches thick. The Schlage 12-321 shares the same adjustable 2-3/8 or 2-3/4 backset range but is a deadbolt latch made for Schlage B-Series deadbolt functions, so it has no way to be retracted by a knob or lever and will not serve a passage or bath door on its own.
8) Is the Kwikset 84290 plain latch a substitute for the Schlage 12-321?
No. The Kwikset 84290 is a square corner plainlatch on a fixed 2-3/8 inch backset. The Schlage 12-321 carries a round corner faceplate with a 1/4 inch radius and adjusts between 2-3/8 and 2-3/4 inch backsets. Two things have to line up before a swap works: the bore center distance in the door and the mortise shape of the faceplate pocket. A square corner plate dropped into a round corner mortise leaves gaps at the corners, and a fixed 2-3/8 latch will not reach a door bored at 2-3/4. Check both before ordering either one.
9) What size is the faceplate on the Schlage 12-321 deadbolt latch?
1 inch wide by 2-1/4 inch long, with a 1/4 inch radius round corner. If the door edge you are matching has square corner prep, the round corner will leave a visible outline; a square corner latch is the right call there.
10) Do I have to worry about handing when ordering a Schlage 12-321 deadbolt latch?
No. A deadbolt latch has no bevel and no spring latch to face, so it works on a left hand or right hand door without changing anything. Set the backset to 2-3/8 or 2-3/4 to match the bore and drive it in.
11) Is there a motorized or smart deadbolt latch option instead of a manual one?
Not in the Schlage 12-321, which is a purely mechanical B-Series latch. If the job calls for a powered bolt, the Emtek LC9-DBLTCH is a motorized deadbolt latch in the EMPowered line. It is a different animal, not a substitute part for a B-Series deadbolt.
12) Does the Schlage 12-321 come with a strike plate?
No. The 12-321 is the latch assembly only, the bolt with the faceplate staked on. The strike for the frame is a separate part, so if you are rebuilding a full deadbolt you need to account for it in the order.
13) Can I use the Emtek LC9-DBLTCH in place of the Schlage 12-321?
Only if the lock above it is the matching electronic unit. The Emtek LC9-DBLTCH is an EMPowered motorized deadbolt latch, meaning the bolt is thrown by a motor in the lock body rather than by turning a thumbturn or key, and it is built for the Emtek EMPowered series. The Schlage 12-321 is a mechanical deadbolt latch for Schlage B-Series deadbolt functions, adjustable for 2-3/8 or 2-3/4 backsets. The two are not interchangeable in the same door - match the latch to the deadbolt already on it.
14) I only need to replace a damaged faceplate, not the whole latch. Does the Schlage 12-321 work for that?
No, and that matters on a repair call. On the Schlage 12-321 the drive-in round corner faceplate is staked on and ships as one complete unit, so ordering it replaces the entire latch assembly rather than just the visible plate. Where a faceplate alone is what you want, the Emtek 83228 is sold as a faceplate and screws for a tubular pocket door privacy latch with square corners. Note that it is a square corner plate for a pocket door privacy latch, so it is a different opening from a B-Series deadbolt.
15) My doors are bored at 2-3/4 inch backset. Which adjustable latches cover that?
Three do. The Schlage 12-321 adjusts for a 2-3/8 or 2-3/4 inch backset on the deadbolt side. The Deltana DLE23875 is an adjustable drive-in latch with an Entry function for doors 1-3/8 to 2 inches thick, and the Deltana DLP23875 is the adjustable 2-3/8 or 2-3/4 inch backset drive-in latch in a Passage/Privacy function for the same door thickness range. Stocking adjustable latches means one part number covers both bore patterns across a mixed building, which is why property managers standardize on them.
16) What finishes does the Schlage 12-321 deadbolt latch come in?
Five: 605 Bright Brass, 609 Antique Brass, 619 Satin Nickel, 620 Antique Nickel, and 626 Satin Chrome. Note that on a drive-in latch almost nothing shows once the deadbolt is installed, just the faceplate ring in the door edge, so for a property manager matching a fleet of doors the finish choice matters far less here than on the exterior trim.
17) What is the Schlage 12-321 latch made of, and will it hold up on an exterior door?
Stainless steel. That is the reason it gets specified on entry doors and multi-family exteriors, where a plated steel latch bolt eventually seizes or corrodes in the bore. For a maintenance crew rekeying and rebuilding exterior deadbolts, it is a like-for-like replacement part rather than an upgrade.
18) What is the difference between the Kwikset 83518 and the Kwikset 83521 when I am replacing a deadbolt latch?
The Kwikset 83518 is an RCAL adjustable square drive UL 3 hour latch; the Kwikset 83521 is an RCAL plain latch, UL 3 hour, specified for BBL, KNL, CNL and PLL. The 83518 adjusts and uses a square drive, while the 83521 is the plain latch tied to those lock families. Either sits alongside the Schlage 12-321, which is the stainless steel adjustable 2-3/8 or 2-3/4 backset deadbolt latch built for Schlage B-Series deadbolt functions - match the latch to the brand and family of the deadbolt in the door.
How fast can I get the Schlage Residential 12-321-619 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 Schlage Residential 12-321-619 come with a warranty?
Absolutely. The Schlage Residential 12-321-619 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 Schlage Residential 12-321-619?
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
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