Don-Jo 1557 Flush Bolt — 6-3/4...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$48.26
$39.65
Don-Jo 1557 Flush Bolt — 6-3/4" x 1" Cast Brass, UL Rated Commercial Door Hardware

Don-Jo 1557 Flush Bolt — 6-3/4" x 1" Cast Brass, UL Rated Commercial Door Hardware

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Model: 1557-626
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$48.26
$39.65
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Don-Jo 1557 Flush Bolt — 6-3/4" x 1" Cast Brass UL Rated Commercial Flush Bolt

The Don-Jo 1557 Flush Bolt is a heavy-duty commercial-grade door hardware solution crafted from solid cast brass, measuring 6-3/4" in length and 1" in width. Designed for reliable door security and control, this flush bolt features a 3/4" bolt throw and a 3/4" backset, making it well-suited for a wide range of commercial door applications. UL Rated and conforming to ANSI L04261, the 1557 delivers dependable performance in demanding environments. Available in six finishes — 605, 606, 612, 613, 625, and 626 — to complement virtually any commercial door hardware specification.

Key Features

  • Precise Dimensions: Measures 6-3/4" in length and 1" in width, providing a low-profile, flush-mounted installation ideal for commercial door pairs and single doors.
  • Reliable Bolt Action: Features a 3/4" bolt throw and 3/4" backset for secure, consistent door retention and smooth manual operation.
  • Cast Brass Construction: Manufactured from cast brass for exceptional durability, corrosion resistance, and long-term performance in high-traffic commercial settings.
  • UL Rated: Carries a UL Rating, confirming compliance with rigorous safety and performance standards for commercial door hardware applications.
  • ANSI Compliance: Meets ANSI L04261 standards, ensuring compatibility and interoperability with industry-standard door hardware specifications.
  • Multiple Finish Options: Available in finishes 605, 606, 612, 613, 625, and 626 to match a wide variety of architectural and design requirements.
  • Commercial-Grade Application: Engineered specifically for commercial use, providing the strength and reliability required in demanding, high-traffic environments.

Certifications & Compliance

  • UL Rated
  • ANSI L04261

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Subcategory: Flush Bolts
  • Product Subgroup: Flush Bolts
  • Product Type: Flush Bolts
  • Commercial/Residential: Commercial
  • Product Category: Door Trim 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 1557?

Don-Jo 1557 Flush Bolts are built to meet the rigorous demands of commercial door hardware applications, combining cast brass construction with UL Rated performance and ANSI L04261 compliance. With a 3/4" bolt throw and 3/4" backset in a compact 6-3/4" x 1" profile, this flush bolt delivers the precision and reliability that commercial installers and facility managers depend on. Engineered for professional-grade performance across a broad range of commercial environments.

Manufacturer Resources

DON-JO Bolts & Latches

Product Specs

Product Group:
Door Trim and Accessories
Subcategory:
Flush Bolts
Product Subgroup:
Flush Bolts
Product Type:
Flush Bolt
Commercial/Residential:
Commercial
Bolt Throw:
3/4"
ANSI/BHMA:
L04261
Product Model:
1557
Product Category:
Door Trim and Accessories
Product Substrate:
Cast Brass
Backset (Distance):
3/4"
Department:
Door Hardware

Don-Jo 1557-626 – Frequently Asked Questions

1) Will the Don-Jo 1557 flush bolt work on the inactive leaf of a pair of doors?
That is exactly what it's for. The 1557 is a manual flush bolt: it mortises into the edge of the inactive leaf and throws a 3/4 inch bolt into a strike at the head or the sill, holding that leaf fixed so the active leaf can latch against it. You operate it by hand at the bolt face, so someone has to reach it to release the leaf. If you need the inactive leaf to release automatically when the active door opens, a manual bolt is the wrong choice and an automatic set like the Ives FB41 for wood doors is the type to look at.
2) Can I use the Don-Jo 1557 flush bolt on a fire rated door pair?
Don't spec the 1557 for a fire rated pair. Fire rated openings need a bolt carrying a stated fire rating, and often an auxiliary fire latch on the top. For that, look at the Ives FB41 automatic flush bolt set for wood doors at 90 minutes, or the ABH 1860P/1862P automatic pair rated 3 hour with a thermal lock. The Don-Jo 1557 is the choice for non-rated commercial pairs where you want a cast brass manual bolt.
3) Can the Don-Jo 1557 replace an existing 6 inch flush bolt in the same mortise?
Not a straight drop-in. At 6-3/4 inches long the 1557 face is longer than a 6 inch bolt such as the Trimco 3999 or the Orca 6 inch, so you'd be lengthening the pocket and the face cutout. Going the other direction is easier: if your existing prep is 6-3/4 inches or longer, the 1557 covers it. Also check the old bolt's backset before you swap, since the 1557 sits on a 3/4 inch backset and the bolt hole in the frame has to line up with that.
4) What is the closest equivalent to the Don-Jo 1557 flush bolt from another brand?
The Ives FB358 manual flush bolt is the nearest match in operation and throw: like the Don-Jo 1557, it is a manually operated flush bolt with a 3/4 inch bolt throw, and the FB358 uses a 1/2 inch bolt diameter. The Don-Jo 1557 is cast brass and offered in polished brass, satin brass, oil rubbed bronze, and satin chrome. Another same-throw manual option is the ABH 1855S single manual flush bolt for metal doors, also specified with a 3/4 inch throw.
5) What should I use instead of a manual flush bolt if the inactive leaf needs to release on its own?
The Don-Jo 1557 is manually operated - someone throws and retracts the bolt by hand. When the inactive leaf has to release automatically as the active leaf opens, use an automatic flush bolt instead: the Ives FB41 automatic flush bolt set for wood doors carries a 3/4 inch throw and a 90 minute fire rating, and the ABH 1860P/1862P automatic flush bolt pair is fire rated 3 hour with a thermal lock. The Adams Rite MS2180 series is an auto-release two-point flushbolt with a Smartlock mechanism.
6) Which flush bolt do I use if the pair needs to be locked and unlocked by key?
The Don-Jo 1557 is operated at the bolt itself, not by cylinder. For key control of the inactive leaf, the Adams Rite 1870 series is a cylinder-operated flushbolt with key control, and the Adams Rite 1877 is a cylinder-operated flushbolt for paired wood doors. Match the choice to the leaf material: the 1877 is specified for wood pairs.
7) Is a fire bolt the same thing as a flush bolt like the Don-Jo 1557?
They are not interchangeable. The Don-Jo 1557 is a 6-3/4 inch by 1 inch cast brass manual flush bolt with a 3/4 inch throw and a 3/4 inch backset. A fire bolt is a separate device for fire rated pairs: the ABH 1858 is a universal bottom fire bolt with manual operation, and the ABH 1854 series is a manual flush bolt set that includes a fire bolt. The Ives FB42 top automatic flush bolt for wood doors pairs the flush bolt with an auxiliary fire latch. If the opening is a rated pair, confirm what the door listing requires before substituting a plain manual bolt.
8) The Don-Jo 1557 has a 3/4 inch backset - what if my strike prep is farther in from the edge?
The Don-Jo 1557 is built to a 3/4 inch backset with a 3/4 inch throw. If the existing prep sets the bolt farther from the door edge, the International Door Closers FB-1202 is a square end flush bolt with a 7/8 inch backset, a 5/8 inch throw and a 1/8 inch offset, using a positive U joint actuator and supplied with a guide. Confirm the backset against the mortise already cut before ordering either one.
9) Is the Don-Jo 1557 flush bolt solid brass or plated steel?
Cast brass throughout. That matters in two places: exterior and coastal openings where a plated steel bolt corrodes in the pocket and seizes, and finish match, since the brass finishes are on brass rather than a coating over steel. Cast brass is also why it holds up in high-traffic commercial door pairs.
10) Does the Don-Jo 1557 flush bolt meet ANSI L04261?
Yes, the 1557 conforms to ANSI L04261 and carries a UL Rating. If your spec sheet calls out L04261 for the inactive leaf bolts, this one answers that line directly, which is usually what a facilities or government submittal needs.
11) What's the difference between the Don-Jo 1557 and a cylinder-operated flush bolt?
Operation and who can release the leaf. The 1557 is thrown and released by hand at the bolt, so anyone standing at the inactive leaf can open it. A cylinder-operated flushbolt like the Adams Rite 1870 series adds key control, which is what you want when the inactive leaf must stay secured against tenants or the public. For a back-of-house or stockroom pair where only staff reach the door, the manual 1557 does the job without adding a cylinder to key.
12) Will a 3/4 inch throw be enough to reach my floor strike?
Three quarters of an inch of projection past the door edge is the working number. That clears a normal head frame gap and drops into a standard dust proof floor strike. Where it gets tight is a raised threshold, thick carpet, or an oversized undercut at the bottom of the leaf, since the gap eats into the throw before the bolt reaches the strike. Measure the gap at the bottom of the inactive leaf first. A bolt with a longer rod, like the Ives FB457 with a 12 inch rod for metal doors, is the answer when the strike sits well below the bolt face.
13) What is a simpler alternative to the Don-Jo 1557 for a light-duty or residential pair?
The Don-Jo 1557 is built for commercial service in cast brass. On lighter openings, the Delaney 6 inch square end solid brass flush bolt and the Orca Hardware 6 inch flush bolt with radius corners are shorter-faceplate mortise bolts, and Emtek flush bolts are another option. Choose the end shape to suit the mortise you are cutting: square end on the Delaney 6 inch, radius corners on the Orca 86SQ.
14) I need to match a square end faceplate on the other doors - what matches the Don-Jo 1557 face shape?
Faceplate end shape is what makes a flush bolt look like the ones already in the building, and it comes in matched pairs from several makers. Trimco offers the 3999 corner mount flushbolt with a rounded end and the 3999SE corner mount flushbolt with a square end, both 6 inch. The Delaney 6 inch solid brass flush bolt is square end, and the Orca Hardware 6 inch bolt has radius corners. The Don-Jo 1557 faceplate measures 6-3/4 inches by 1 inch.
15) What do I use instead of the Don-Jo 1557 when the bolt has to reach up to a header well above the door edge?
The Don-Jo 1557 is a 6-3/4 inch flush bolt with a 3/4 inch throw, so the bolt engages close to the leaf edge. For longer reach at the top of the leaf, the Ives FB457 is a manual flush bolt with a 12 inch rod length for metal doors, and the Delaney 7 inch mortise extension flush bolt is an extension-type bolt. Delaney also lists a 7 inch slide type mortise-in flush bolt.
16) What is the difference between the Don-Jo 1557 and a two-point flushbolt?
The Don-Jo 1557 is a single flush bolt conforming to ANSI L04261, mortised into the leaf and thrown by hand. A two-point flushbolt drives top and bottom together from one mechanism: the Adams Rite MS1880/MS1881 is a two-point flushbolt with an interlock mechanism, and the MS2180 series is an auto-release two-point flushbolt with a Smartlock mechanism. For a standard pair where each bolt is set separately, single bolts such as the 1557 or the ABH 1855S single for metal doors are the direct form.
17) Which flush bolts are specified for metal doors versus wood doors?
Leaf material drives the pick. For metal leaves, the ABH 1855S single manual flush bolt, the ABH 1854 series set with fire bolt, and the Ives FB457 with a 12 inch rod are all specified for metal doors. For wood leaves, the Ives FB41 automatic set and the Ives FB42 top automatic bolt with auxiliary fire latch are wood door products, as is the Adams Rite 1877 cylinder-operated flushbolt for paired wood doors. The Don-Jo 1557 is a cast brass commercial flush bolt at 6-3/4 inches by 1 inch with a 3/4 inch throw.
18) What finishes does the Don-Jo 1557 flush bolt come in?
Four: 605 polished brass, 606 satin brass, 613 oil rubbed bronze, and 626 satin chrome. If you're standardizing a building, 626 satin chrome is the one that matches most commercial lever and closer hardware, and 613 oil rubbed bronze is the match for dark bronze storefront and interior wood door packages. All four are the same 6-3/4 by 1 inch bolt.
19) Is the Don-Jo 1557 flush bolt heavy duty enough for a school or hospital door?
It's built for that traffic. Cast brass body, UL Rated, conforming to ANSI L04261, and catalogued as commercial rather than residential grade. Typical placements are office buildings, schools, healthcare, retail, warehouse, multi-tenant residential, and municipal buildings. Where it stops being the right pick is a fire rated opening, which needs a bolt with a stated fire rating instead.
How fast can I get the Don-Jo 1557-626 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 Don-Jo 1557-626 come with a warranty?
Absolutely. The Don-Jo 1557-626 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 Don-Jo 1557-626?
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