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Rockwood 556WS Lever Extension Flush Bolt Windstorm
Model: ROC-556WS-US26D
ROCKWOOD 556WS Lever Extension Flush Bolt Windstorm
The Rockwood 556WS Flush Bolt is part of a UL certified assembly from ASSA ABLOY. Listed for use on both in-swing or out-swing paired applications,...
Rockwood
$59.50
$47.62
Rockwood 555 Lever Extension Flush Bolt - 12" Rod Length
The Rockwood 555 is a lever-extension flush bolt designed for fire-rated hollow metal swinging doors. Brass construction, ANSI A156.16 L04251 listed, and rated for doors up to 4' wide × 10' high with a 3-hour fire rating. Six finish options available.
Specifications
- Material: Brass
- Handle Type: Lever
- Rod Length: 12" (center of face plate to bolt end - retracted)
- Bolt Throw: 3/4"
- Rod Backset: 3/4"
- Bolt Head: 1-1/2" adjustable
- Face Plate: 1" × 6-3/4"
- Door Strike: 15/16" × 2-1/4"
- Fasteners: 8 ea. #8 × 3/4" FH combo screws
- ANSI/BHMA: ANSI A156.16, L04251
- Fire Rating: Up to 3 hours
- Door Prep: 115 door and frame preparation
- Application: Fire-rated hollow metal swinging doors up to 4' wide × 10' high
- Use: Commercial
Available Finishes
- 604 - Satin Brass
- 612 - Satin Bronze
- 613 - Dark Oxidized Satin Bronze Oil-Rubbed
- 625 - Bright Chrome
- 626 - Satin Chrome
- BSP - Black Suede Powder Coat
Options & Accessories
- Additional rod lengths available: 18", 24", 36", 48"
- Extra-long bolt head: 2-1/2" (or custom specification)
- Use Rockwood No. 570 Dust Proof Strike to prevent dirt from blocking the bottom strike
About Rockwood
Rockwood products are used across institutional buildings, offices, retail, educational, detention, sports facilities, hotels, restaurants, and finer residences. Rockwood is an ASSA ABLOY brand committed to environmental health and safety. See the Environmental Health and Safety Policy for details.
Resources & Downloads
Manufacturer Resources
Product Specs
- Product Group:
- Door Trim and Accessories
- Fasteners:
- 8 ea. #8 x 3/4" FH combo screws
- Subcategory:
- Bolts and Latches
- Product Subgroup:
- Flush Bolts
- Product Type:
- Flush Bolts
- ANSI/BHMA:
- ANSI A156.16, L04251
- Commercial/Residential:
- Commercial
- Handle Type:
- Lever
- Product Model:
- 555
- Face Plate:
- 1" x 6-3/4"
- Door Strike:
- 15/16" x 2-1/4"
- Product Category:
- Door Trim and Accessories
- Department:
- Door Hardware
Rockwood 555-26D – Frequently Asked Questions
1) Will the Rockwood 555 flush bolt work on a fire-rated hollow metal door pair?
That's exactly what the 555 is built for: fire-rated hollow metal swinging doors, rated up to 3 hours, on openings up to 4 feet wide by 10 feet high. It's a manual lever-extension bolt, so it holds the inactive leaf of a pair while the active leaf carries the lock or exit device. Stay inside the 4 x 10 size envelope; taller or wider leaves fall outside what the 555 is rated for.
2) Is a 12 inch rod long enough, or do I need a longer flush bolt rod?
The 12 inch rod is measured from the center of the face plate to the bolt end, retracted, and it suits a standard commercial opening where the bolt sits within reach of the door edge. On taller leaves, or where the bolt has to be operable from a higher or lower point, Rockwood offers the same 555 in 18, 24, 36, and 48 inch rod lengths. Pick the rod by where you want the lever to land on the door face, not by door height alone.
3) Will the Rockwood 555 bolt engage my existing strike?
Bolt throw is 3/4 inch with a 1-1/2 inch adjustable bolt head, so there is real adjustment to pick up an existing frame or floor strike without re-drilling. The supplied door strike is 15/16 by 2-1/4 inches. If the throw depth in your existing prep is short, the adjustable head is what you use to dial it in; an extra-long 2-1/2 inch bolt head is available, and custom head lengths can be specified.
4) Should I use a manual flush bolt like this or an automatic flush bolt?
A lever-extension manual bolt like the Rockwood 555 is thrown and retracted by hand at the inactive leaf, which is right when that leaf stays shut most of the time and staff rarely need both leaves open. An automatic flush bolt releases the inactive leaf when the active leaf opens, which matters where code or traffic requires the pair to work without anyone reaching for a lever. For that behavior, look at the ABH 1860P/1862P automatic flush bolt pair, fire rated 3-hour with thermal lock, or the Ives FB41 automatic set for wood doors, rated 90 minutes.
5) What ANSI rating does the Rockwood 555 carry, and will it meet a hardware schedule calling for L04251?
The 555 is listed to ANSI A156.16 under function number L04251, which is the designation a spec writer puts on a schedule for this class of flush bolt. Pair that with the 3-hour fire rating and it stands up for fire-rated hollow metal openings in institutional and MRO work where the schedule cites the ANSI number directly.
6) The inactive leaf is a wood door, not hollow metal. Is the Rockwood 555 still the right flush bolt?
The Rockwood 555 is specified for fire rated hollow metal swinging doors, so for a wood inactive leaf go to a bolt built for that substrate. The Adams Rite 1877 is a cylinder operated flushbolt for paired wood doors. The Ives FB41 is an automatic flush bolt set for wood doors with a 3/4 inch throw rated 90 minutes, and the Ives FB42 is the top automatic flush bolt for wood doors with an auxiliary fire latch. The Delaney 6 inch square end solid brass flush bolt is a mortise style bolt for lighter duty wood openings.
7) What manual flush bolt has the same 3/4 inch throw as the Rockwood 555?
The ABH 1855S is a manual flush bolt single for metal doors with a 3/4 inch throw, matching the 3/4 inch bolt throw of the Rockwood 555. The Ives FB358 is also a manual flush bolt with a 3/4 inch throw, and it lists a 1/2 inch bolt diameter and a fire rating. Throw depth drives how deep the strike pocket has to be, so on a retrofit where the frame is already drilled these three land in the same place; the 555 additionally lists a 3/4 inch rod backset and a 1 inch by 6-3/4 inch face plate to check against the existing mortise.
8) What is the closest equivalent to a Rockwood 555 flush bolt with a 12 inch rod for a hollow metal door?
The Ives FB457 manual flush bolt is built for the same job: it is a manual flush bolt with a 12 inch rod length for metal doors, and it carries a fire rating. The Rockwood 555 is a lever extension flush bolt with a 3/4 inch bolt throw and a 12 inch rod measured from the center of the face plate to the bolt end retracted, ANSI A156.16 L04251, for fire rated hollow metal swinging doors up to 4 feet wide by 10 feet high. The operating difference is the head: the 555 uses a lever extension you flip, so confirm which actuator style your opening was prepped and specified for before swapping.
9) I need a flush bolt that throws itself when the inactive leaf closes instead of being set by hand. What should I use?
Look at automatic flush bolts rather than the Rockwood 555, which is a manual lever extension bolt the user throws by hand. The ABH 1860P/1862P is an automatic flush bolt pair, fire rated 3 hour with a thermal lock. On wood doors, the Ives FB41 is an automatic flush bolt set with a 3/4 inch throw rated 90 minutes, and the Ives FB42 is a top automatic flush bolt for wood doors with an auxiliary fire latch. The 555 itself is rated up to 3 hours on hollow metal swinging doors, so the ABH 1860P is the closer match if you are staying on metal and need the same fire duration.
10) Is a 6 inch corner mount flushbolt like the Trimco 3999 a substitute for the Rockwood 555?
They solve different geometry. The Trimco 3999 is a 6 inch corner mount flushbolt with a rounded end and the Trimco 3999SE is the square end version of the same 6 inch corner mount; the Orca Hardware 86SQ is a 6 inch flush bolt with radius corners. Those are short corner or edge mount bolts. The Rockwood 555 is a lever extension bolt with a 12 inch rod measured from the center of the face plate to the retracted bolt end, on a 1 inch by 6-3/4 inch face plate, so the lever sits well down the door edge from the bolt itself and reaches a bolt head at the top rail. If the door was prepped for a 6 inch corner mount unit, the 555 rod length and face plate will not drop into it.
11) Does the International Door Closers FB-1202 flush bolt interchange with the Rockwood 555?
Check the throw and backset before ordering it as a swap. The International Door Closers FB-1202 is a flush bolt with a positive U joint actuator, a 5/8 inch throw, a 1/8 inch offset with a 7/8 inch backset, square end, with guide. The Rockwood 555 has a 3/4 inch bolt throw and a 3/4 inch rod backset, with a 15/16 inch by 2-1/4 inch door strike. Different throw and different backset mean the strike pocket depth and the edge boring do not line up, so treat the FB-1202 as a separate prep rather than a drop in replacement.
12) We need the inactive leaf to release automatically under panic egress. Is a Rockwood 555 the right bolt for that opening?
No. The Rockwood 555 is a manual lever extension bolt on a 12 inch rod, thrown and retracted by hand. For an opening that has to release both bolts under egress, the Adams Rite MS2180 Series is an auto release two point flushbolt with a Smartlock mechanism, and the Adams Rite MS1880/MS1881 are two point flushbolts with an interlock mechanism that ties top and bottom together. Those change the egress behavior of the pair; the 555 does not.
13) Do I need anything else besides the flush bolt to finish the job on a bottom bolt?
Mounting hardware is in the box: eight #8 x 3/4 inch flat head combo screws, the face plate, and the door strike. What is worth adding at the bottom is a dust proof strike, because grit collects in a floor strike and stops the bolt from seating. Rockwood's No. 570 Dust Proof Strike is the matching part for that. Order two 555 bolts if you are securing both top and bottom of the inactive leaf.
14) What finishes does the Rockwood 555 flush bolt come in, and can I match the rest of my door hardware?
Six finishes: 604 satin brass, 612 satin bronze, 613 dark oxidized satin bronze oil-rubbed, 625 bright chrome, 626 satin chrome, and BSP black suede powder coat. Those are standard BHMA finish numbers, so 626 matches the satin chrome levers and closers already on most commercial openings, and 613 matches oil-rubbed bronze trim. The body is brass under the finish.
15) Is the Ives FB457 a direct swap for the Rockwood 555?
The Ives FB457 is the closest peer we carry: a manual flush bolt with a 12 inch rod for metal doors, fire rated. Same job, same rod length, same door material. Where they differ on paper is the ANSI designation, which the Rockwood 555 states as A156.16 L04251, and the prep, which for the 555 is 115. If your schedule calls out the ANSI function or the existing leaf is already cut to 115 prep, stay with the 555.
16) We want the inactive leaf secured with a key rather than left open to anyone in the corridor. What replaces a Rockwood 555?
Move to a cylinder operated flushbolt. The Adams Rite 1870 Series is a cylinder operated flushbolt with key control, and the Adams Rite 1877 is the cylinder operated version for paired wood doors. The Rockwood 555 is operated by a lever extension with no key control, so anyone at the door can retract it. For institutional openings where the inactive leaf must stay locked down, the 1870 changes who can move the bolt; the 555 changes only how easily a person at the door can reach it.
17) What flush bolt should I spec for a fire rated metal pair when I also need the auxiliary fire bolt in the same order?
The ABH 1854 Series is a manual flush bolt set supplied with a fire bolt for metal doors, so the top and bottom bolts and the fire bolt come together. The ABH 1858 Series is a universal bottom fire bolt with manual operation if you only need the bottom piece. The Rockwood 555 is a lever extension flush bolt rated up to 3 hours on fire rated hollow metal swinging doors up to 4 feet wide by 10 feet high, ANSI A156.16 L04251. Choose the 1854 when the specification calls for the flush bolt set and fire bolt as one assembly, and the 555 when you are matching an existing 115 door and frame preparation.
18) Is a mortise slide bolt like the Delaney 4101 the same thing as a Rockwood 555 flush bolt?
They are not interchangeable. The Delaney 4101 is a 7 inch slide type mortise in flush bolt and the Delaney 4363 is a 7 inch mortise extension in flush bolt; the Emtek flush bolts are the same general mortise style family. Those are slide operated bolts mortised into the door edge. The Rockwood 555 is a lever extension bolt for commercial use on fire rated hollow metal swinging doors, ANSI A156.16 L04251, with a 1 inch by 6-3/4 inch face plate and 8 each #8 by 3/4 inch flat head combo screws. If the specification on the drawing calls out an ANSI A156.16 listed bolt on a rated metal pair, a residential style slide bolt will not satisfy it.
19) Is the Rockwood 555 durable enough for a school or hospital corridor pair?
Brass body, commercial-rated, and listed to ANSI A156.16 L04251, which is the standard commercial spec for this class of bolt. Rockwood hardware runs in institutional buildings, schools, hotels, detention, and healthcare. For a corridor pair getting steady traffic, add the No. 570 Dust Proof Strike at the floor so the bottom bolt keeps seating cleanly over time.
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Absolutely. The Rockwood 555-26D is backed by a manufacturer’s warranty.
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