Dormakaba 25639 T-Strike Plate...
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Dormakaba 25639 T-Strike Plate, 1-1/8" x 2-3/4" with 1-1/8" Lip Length, Square Corner, Commercial Replacement Part

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Model: 25639 626

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

$28.77
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Dormakaba 25639 T-Strike Plate, 1-1/8" x 2-3/4" with 1-1/8" Lip Length, Square Corner

The Dormakaba 25639 is a commercial-grade T-Strike plate engineered as a precision replacement part for compatible Dormakaba mechanical lock applications. Measuring 1-1/8" x 2-3/4" with a 1-1/8" lip length and a square corner profile, this strike plate is designed to deliver consistent, reliable latch engagement in commercial door hardware installations. Its compact T-profile geometry ensures compatibility with standard door frames and lock sets requiring this strike configuration.

Key Features

  • Precise Dimensions: Measures 1-1/8" x 2-3/4" for accurate fit in compatible commercial door frame applications.
  • Defined Lip Length: Features a 1-1/8" lip length to provide proper latch guidance and secure engagement.
  • Square Corner Profile: Square corner design ensures proper seating in standard mortised strike pockets on commercial doors.
  • T-Strike Configuration: T-profile strike geometry is specifically suited for latch bolt engagement in compatible Dormakaba mechanical lock assemblies.
  • Commercial-Grade Replacement Part: Engineered as an OEM-compatible replacement component for Dormakaba mechanical lock systems in commercial environments.
  • Dormakaba Parts and Accessories Lineage: Sourced directly from the Dormakaba parts and accessories program, ensuring quality consistency with original hardware.

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: Strike Plates
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 25639
  • Features: Dorma Parts & Accessories

Typical Applications

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

Why Dormakaba 25639?

Dormakaba strike plates are manufactured to exacting specifications, ensuring dimensional accuracy and reliable latch engagement in demanding commercial environments. The 25639 T-Strike is a purpose-built replacement component sourced from Dormakaba's own parts and accessories program, providing professionals with confidence that the replacement hardware meets the same standards as the original installation. For facilities requiring dependable door hardware performance, Dormakaba replacement parts deliver the precision and durability that commercial applications demand.

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:
Strike Plates
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
25639
Features:
Dorma Parts & Accessories

Dormakaba 25639 626 – Frequently Asked Questions

1) What size is the Dormakaba 25639 T-strike and will it drop into my existing frame cutout?
The 25639 T-strike measures 1-1/8 by 2-3/4 inches with a 1-1/8 inch lip length and square corners. If your frame is already mortised for a 1-1/8 by 2-3/4 strike pocket with square corners, it seats directly with no filing. If your existing strike has radius (rounded) corners, the square-corner 25639 will not seat cleanly in that pocket without reworking the mortise.
2) Can I use the Dormakaba 25639 to replace a strike on a non-Dormakaba lock?
Treat it as a Dormakaba part first. It is built as an OEM-compatible replacement for compatible Dormakaba mechanical lock applications. On another brand's lock it only works if that opening's strike pocket is genuinely 1-1/8 by 2-3/4 with square corners and the latch throw lines up with the T-cutout. If you are matching a different manufacturer's latch or deadbolt, a brand-matched plate is the safer buy, for example the Codelocks ASA strike plate for Codelocks hardware.
3) What is the difference between the Dormakaba 25639 T-strike and a deadbolt strike plate like the Deltana SP2753?
The Dormakaba 25639 is a T-strike with a 1-1/8 inch by 2-3/4 inch face and a 1-1/8 inch lip length, shaped to guide a latch bolt on a commercial lock. The Deltana SP2753 is a deadbolt strike plate measuring 2-3/4 inch by 1-1/4 inch in steel, so it serves a deadbolt rather than a lipped latch. A deadbolt throws straight into the pocket and does not need a lip to ride on, so the two are not interchangeable in the same prep.
4) My strike mortise is oversized or slightly off - what can I use instead of the fixed 25639?
The 25639 has fixed dimensions of 1-1/8 inch by 2-3/4 inch with a 1-1/8 inch lip, so the frame prep has to match it. Where the prep does not line up, an adjustable strike covers the variance: the Kwikset 80318 is a full round adjustable strike and the Kwikset 81825 is a 6 way adjustable deadlatch. Both are deadbolt strike plate function, so match them to the bolt you are actually securing.
5) What does the 1-1/8 inch lip length on this strike do, and how do I know it is the right lip for my door?
The lip is the curved tongue that projects past the frame face and guides the latch over the stop as the door closes. On the 25639 it measures 1-1/8 inches. Lip length has to reach past the door face and frame trim so the latch rides up instead of slamming into the plate edge, and it must not stick out so far that it catches people or carts in the opening. Measure from the frame's strike face to the outer edge of the door face on your opening and match that to the 1-1/8 inch lip before ordering.
6) My door is out of alignment and the latch is not catching. Will a new 25639 strike fix it?
Only if the existing strike is damaged, worn, or the wrong lip. The 25639 is a fixed 1-1/8 by 2-3/4 plate with a 1-1/8 inch lip, so it repeats the same latch position as the part it replaces. For an opening that has shifted and needs the catch point moved, an adjustable strike is the better fix, for example the Kwikset 81825 six-way adjustable deadlatch or the Kwikset 80318 full round adjustable strike.
7) Is a Codelocks ASA strike plate an equivalent to the Dormakaba 25639?
No. The Codelocks ASA Strike Plate follows the ASA strike pattern and comes in a stainless steel finish, a larger frame prep than the 1-1/8 inch by 2-3/4 inch face of the 25639. The 25639 is also offered in six finishes including 605 bright brass, 613 oil rubbed bronze and 626 satin chrome, so it is the choice when the strike needs to match other trim on the opening rather than an ASA cutout.
8) Does the Dormakaba 25639 include a strike box or dust box behind it?
The 25639 is the strike plate itself, a 1-1/8 inch by 2-3/4 inch square-corner T-strike with a 1-1/8 inch lip. If the frame needs a box behind the plate, that is a separate item - the Kwikset 81640 is a strike box and the Kwikset 81231-001 is a metal strike dust box. Verify the box depth against your frame cavity before pairing.
9) I need a square-corner strike but the door is a residential deadbolt - is the Dormakaba 25639 right?
The 25639 is a commercial replacement part for Dormakaba mechanical lock applications and is built as a lipped T-strike for latch engagement. For a deadbolt, the Emtek 83223 standard deadbolt strike plate also uses square corners and is a deadbolt strike, which matches a deadbolt prep with a square-corner mortise. Confirm the existing cutout dimensions before ordering either.
10) Is this strike plate suitable for high-traffic commercial doors or is it a residential part?
The 25639 is a commercial part, listed as a commercial-grade replacement component from Dormakaba's parts program, and it is used in office buildings, schools, healthcare, retail, warehouses, multi-tenant residential and government facilities. It is not a builder-grade residential plate.
How fast can I get the Dormakaba 25639 626 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 Dormakaba 25639 626 come with a warranty?
Absolutely. The Dormakaba 25639 626 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 Dormakaba 25639 626?
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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