Don-Jo MST-261 ASA Door Strike...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$9.36
$6.35
Don-Jo MST-261 ASA Door Strike, 4-7/8" x 1-1/4" Non-Ferrous Commercial Strike Plate

Don-Jo MST-261 ASA Door Strike, 4-7/8" x 1-1/4" Non-Ferrous Commercial Strike Plate

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Model: MST-261-SL
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$9.36
$6.35
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Don-Jo MST-261 ASA Door Strike, 4-7/8" x 1-1/4" Non-Ferrous Commercial Strike Plate

The Don-Jo MST-261 is a commercial-grade ASA door strike designed for reliable latch engagement in a wide range of door hardware applications. Measuring 4-7/8" in height and 1-1/4" in width, this strike plate is constructed from 13-gauge (.095) material and features a single latch hole configuration. Available in multiple finishes including BP, DU, and SL, the MST-261 is suited for commercial installations requiring a durable, properly dimensioned ASA-pattern strike.

Key Features

  • Precise ASA Strike Dimensions: Measures 4-7/8" in height and 1-1/4" in width, conforming to standard ASA strike sizing for straightforward replacement and new installation compatibility.
  • Heavy-Gauge Construction: Manufactured from 13-gauge (.095) material, providing the structural rigidity and durability required for commercial door hardware applications.
  • Single Latch Hole Configuration: Features one latch hole, making it compatible with standard single-latch locksets and cylindrical lock applications.
  • Multiple Finish Options: Available in BP, DU, and SL finishes to coordinate with existing door hardware and meet aesthetic requirements of the installation.
  • Commercial-Grade Quality: Engineered for commercial use, delivering consistent performance in high-traffic environments where dependable latch engagement is essential.
  • Convenient Shelf Pack Quantity: Sold in shelf packs of 30, making the MST-261 an efficient choice for contractors, distributors, and facilities managers stocking replacement hardware.

Technical Specifications

  • Product Group: Parts and Accessories
  • Product Subgroup: Door Strikes and Strike Boxes
  • Product Type: Door Strikes
  • Subcategory: Door Strikes
  • Commercial/Residential: Commercial
  • Product Category: Parts and Accessories
  • Department: Door Hardware

Typical Applications

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

Why Don-Jo MST-261?

Don-Jo MST-261 door strikes deliver professional-grade reliability through heavy 13-gauge (.095) construction and precise ASA-pattern dimensioning at 4-7/8" x 1-1/4". Engineered for demanding commercial applications, the MST-261 provides consistent latch engagement performance and is available in multiple finishes to suit a variety of installation requirements.

Manufacturer Resources

DON-JO Strike Plates

Product Specs

Product Group:
Parts and Accessories
Product Subgroup:
Door Strikes and Strike Boxes
Product Type:
Door Strikes
Subcategory:
Door Strikes
Commercial/Residential:
Commercial
Product Model:
MST 261
Door Strike:
ASA Strike
Product Category:
Parts and Accessories
Product Substrate:
Ferrous
Department:
Door Hardware

Don-Jo MST-261-SL – Frequently Asked Questions

1) Will the Don-Jo MST-261 fit a standard ASA strike cutout in my frame?
Yes. The MST-261 is an ASA-pattern strike measuring 4-7/8 x 1-1/4 inches, which is the standard ASA lip strike footprint used on commercial hollow metal frames. If the frame in front of you already has an ASA prep from a cylindrical or mortise lockset, this drops into it without cutting the frame.
2) Is the MST-261 strike a single latch hole or does it have a separate deadbolt cutout?
Single latch hole only. The MST-261 has one opening, so it suits a cylindrical latch or a single-latch lockset. If you're replacing a strike on a lock that throws both a latch and a deadbolt through the frame, you need a two-hole ASA strike instead, not this one.
3) My old strike is worn and the door rattles, is the Don-Jo MST-261 a straight replacement?
If what's in the frame now is a 4-7/8 x 1-1/4 inch ASA strike, yes, the MST-261 swaps in on the same prep with the same screw pattern and no frame modification. Measure the existing plate first: ASA at 4-7/8 x 1-1/4 is the common commercial size, but T-strikes and 2-3/4 inch square-corner plates are different footprints and this won't cover their cutouts.
4) How heavy a gauge is the Don-Jo MST-261 strike plate?
13-gauge, .095 thick. That's a heavy strike compared to the light stamped plates that ship with residential locksets, and it's the reason this holds up on high-traffic openings like school corridors and multi-tenant entries where the latch hits the lip thousands of times a month.
5) Is the MST-261 strike steel, and will it rust on an exterior door?
The MST-261 is a ferrous substrate, meaning a steel base with a plated or coated finish (brass plated, duronodic, silver, or matte black). Being steel, the protection is in the coating, so on a weather-exposed exterior opening expect the finish to be what stands between the plate and corrosion. It's specified for commercial use.
6) What's the difference between an ASA strike like the Don-Jo MST-261 and a double-door strike kit?
An ASA strike like the MST-261 mounts in the frame jamb and catches a latch from a single door leaf. It won't help you on a pair of doors with no mullion, where the inactive leaf has to carry the strike. For that, a double-door strike kit such as the Detex 92 Strike Kit, from the 90 Strike Series and supplied with tamper resistant fasteners, is the right part. Pick by the opening: single door in a frame, use the ASA strike; pair of doors, use the double door kit.
7) Can I use the Don-Jo MST-261 as a strike for a pipe or round post application?
No. The MST-261 is a flat ASA strike plate for a door frame jamb. Mounting a strike to a round post or pipe calls for a pipe adapter strike, such as the Trimco 1260P from the 1260 Series, which is made for that mounting condition. Forcing a flat ASA plate onto a curved surface won't sit flush or hold the latch reliably.
8) What finishes does the Don-Jo MST-261 ASA strike come in?
Four: 622 matte black, BP brass plated, DU duronodic brown coated, and SL silver coated. For a fleet of openings, SL is the usual match to satin chrome and aluminum lever trim, DU pairs with dark bronze storefront and exit hardware, and 622 matches flat black hardware.
9) I need strikes for a whole building, how does the MST-261 ship?
In shelf packs of 30. That's built for stocking rather than one-off repair, so it works if you're a contractor carrying spares on the truck, a distributor holding shelf stock, or a facility standardizing every opening on one ASA strike pattern.
How fast can I get the Don-Jo MST-261-SL 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 Don-Jo MST-261-SL come with a warranty?
Absolutely. The Don-Jo MST-261-SL 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 Don-Jo MST-261-SL?
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 Don-Jo MST-261-SL 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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