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", silver coated non-ferrous commercial strike plate, front view

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 for standard single-latch cylindrical lockset applications. Measuring 4-7/8" x 1-1/4" and built from 13-gauge (.095) non-ferrous material, it conforms to ASA strike dimensioning for direct replacement or new installation. Available in Brass Plated (BP), Duronodic Brown Coated (DU), Silver Coated (SL), and Matte Black (622) finishes.

Key Features

  • ASA Strike Dimensions: 4-7/8" height x 1-1/4" width for standard replacement and new installation compatibility.
  • 13-Gauge (.095) Non-Ferrous Construction: Provides the structural rigidity required for commercial door hardware installations.
  • Single Latch Hole: Compatible with standard single-latch locksets and cylindrical lock applications.
  • Four Finish Options: Brass Plated (BP), Duronodic Brown Coated (DU), Silver Coated (SL), and Matte Black (622) to coordinate with existing hardware.

Specifications

  • Model: MST-261
  • Strike Type: ASA Strike
  • Height: 4-7/8"
  • Width: 1-1/4"
  • Gauge: 13-gauge (.095)
  • Substrate: Non-Ferrous
  • Latch Holes: Single
  • Use: Commercial
  • Available Finishes: Brass Plated (BP), Duronodic Brown Coated (DU), Silver Coated (SL), Matte Black (622)

Typical Applications

  • Commercial office buildings
  • Educational facilities
  • Healthcare institutions
  • Retail establishments
  • Industrial and warehouse facilities
  • Multi-tenant residential properties
  • Government and municipal buildings

Manufacturer Resources

DON-JO Strike Plates

Product Specs

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