Deltana 6FBS 6" Flush Bolt, Heavy-Duty, Solid Brass

That's exactly the job it does. The 6FBS is a manual flush bolt for double doors: it mortises into the edge of the inactive leaf and throws a bolt into the head jamb (or the floor/threshold, depending on where you set it), holding that leaf fixed so the active leaf has something to latch against. Because it recesses into the door edge, nothing projects to catch on traffic. It's a manual bolt, so someone retracts it by hand at the door edge when you need both leaves open.

One inch of throw. That is a longer engagement than most residential-grade flush bolts, and it matters where the head jamb or floor strike sits a little deep, or where the frame has settled. For comparison in the same category, the International Door Closers FB-1202 flush bolt is a 5/8 inch throw part, and the Ives FB358 manual flush bolt throws 3/4 inch. Drill or mortise the strike to accept the full inch so the bolt seats without binding.

Six inches, with square corners on the face plate. That length decides your mortise: you're routing a 6 inch pocket into the door edge, so the stile has to be deep enough to take the bolt body without breaking through the face. Square corners mean a router with a square-corner template or a chiseled finish, not a radius bit. If your existing prep is radius-cornered, the Orca Hardware 6 inch flush bolt with radius corners drops into that prep instead.

Manual. The 6FBS is operated by hand at the door edge, which means the inactive leaf stays bolted until someone deliberately retracts it. That's the right choice for a leaf you rarely open, a storeroom or a shop pair where the second leaf only comes into play for deliveries. If you need the inactive leaf to release itself the moment the active leaf swings, that's a different device: the Ives FB41 automatic flush bolt set for wood doors, or the ABH 1860P/1862P automatic flush bolt pair. Automatic bolts are what egress codes usually drive you toward on a pair, so check what the opening calls for before you commit to a manual bolt.

Don't specify the 6FBS for a labeled fire pair. It's a solid brass manual flush bolt with no fire listing behind it, and a labeled opening needs hardware carrying its own rating. For fire rated pairs, the options in the same category include the Ives FB41 automatic flush bolt set for wood doors, rated 90 minutes, the ABH 1854 Series manual flush bolt set with fire bolt for metal doors, and the ABH 1860P/1862P automatic flush bolt pair, fire rated 3-hour with a thermal lock. Match the bolt to the door construction, wood or hollow metal, when you pick.

If the old bolt was a 6 inch square end unit, the 6FBS matches on length and corner style, which are the two things a mortise pocket cares about. What you have to check on your own door is the width and depth of the existing pocket and whether the old face plate screw holes line up, since the 6FBS ships with its own #6 x 3/4 inch screws. Other 6 inch square end bolts in the same category include the Trimco 3999SE corner mount square end flushbolt and the Delaney 6 inch square end solid brass flush bolt. If the prep you're pulling out has rounded ends, look at the Trimco 3999 rounded end version rather than fighting the corners.

The Delaney 4108 is a 6 inch square end solid brass flush bolt, matching the 6FBS on length, square end profile, and solid brass construction. The Trimco 3999SE is also a 6 inch corner mount flushbolt with a square end. If the square end is what you are matching to an existing door, either one lines up with the 6FBS on that detail.

The Deltana 6FBS has square corners. For a rounded profile at the same 6 inch length, the Trimco 3999 is a 6 inch corner mount flushbolt with a rounded end, and the Orca Hardware 86SQ is a 6 inch flush bolt with radius corners. Match the corner profile to the mortise already cut in the door edge so you are not reworking the pocket.

The Deltana 6FBS is solid brass and finished for exposed decorative work. For metal doors, the ABH 1855S is a manual flush bolt single with a 3/4 inch throw made for metal doors, the ABH 1854 series is a manual flush bolt set with a fire bolt for metal doors, and the Ives FB457 is a manual flush bolt with a 12 inch rod length for metal doors. The FB457 rod length is the one to check against your top rail height before ordering.

The Deltana 6FBS is a manual bolt with a 1 inch throw that the user sets and releases at the door edge. For automatic operation, the Ives FB41 is an automatic flush bolt set for wood doors with a 3/4 inch throw, the Ives FB42 is a top automatic flush bolt for wood doors with an auxiliary fire latch, and the ABH 1860P/1862P is an automatic flush bolt pair. On a high traffic pair where staff will not reliably reset a manual bolt, the automatic style keeps the inactive leaf secured without a step.

The Deltana 6FBS is operated by hand at the edge of the inactive leaf. If the inactive leaf needs to be controlled by key so it is not thrown by anyone who reaches it, 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. That is a different security decision than the 6FBS makes, and it adds a cylinder to your keying schedule.

No. The Deltana 6FBS is a single heavy-duty bolt packed one per unit. The ABH 1854 series is a manual flush bolt set with a fire bolt for metal doors, and the Ives FB42 for wood doors includes an auxiliary fire latch. Those bring a fire component the 6FBS does not, so replacing one with a 6FBS changes what the opening does rather than simply swapping a bolt.

Solid brass, and it's the heavy-duty version of the 6 inch bolt rather than a light residential one. It's classed for commercial use. The one exception on material: order it in Brushed Stainless and you get stainless steel instead of brass. For a property manager standardizing across a building, brass is the reason this bolt tolerates repeated throwing without the bolt rod wearing loose in the housing the way stamped bolts do.

Ten finishes: Oil Rubbed Bronze, Brushed Nickel, Antique Nickel, Paint Black, Polished Chrome, Brushed Chrome, Polished Brass, Unlacquered Brass, Antique Brass, and PVD Polished Brass. Two of those are worth understanding before you order for a fleet of openings. Unlacquered Brass is left bare, so it will darken and patina over time by design. PVD Polished Brass is a coated finish that holds its color and is the one to pick when the bolt has to keep matching the rest of the door hardware years out, or where it sees weather.

No handing to specify. The 6FBS is a straight recessed bolt operated by a slide in the face plate, so one part covers a left-hand or right-hand inactive leaf, and the same unit works at the top or the bottom of the door. That's one less thing to get wrong on a multi-door order: you're only choosing quantity and finish.

Length of reach is the whole distinction. A 6 inch bolt like the Deltana 6FBS sits in the door edge and throws into a strike right at the head or right at the floor, which is what you want on a standard height pair. Where the door is taller than standard, or where you need the operating slide down within hand reach while the bolt engages well above it, you go to a longer body or an extension: the Delaney 7 inch slide type mortise-in flush bolt, the Delaney 7 inch mortise extension flush bolt, or the Ives FB457 manual flush bolt with a 12 inch rod for metal doors. Measure from where you want the handle to where the bolt has to land before choosing.

The Deltana 6FBS is a single 6 inch bolt, so a top and bottom application takes two of them, each thrown separately. The Adams Rite MS1880/MS1881 are two-point flushbolts with an interlock mechanism, and the Adams Rite MS2180 series is an auto-release two-point flushbolt with a Smartlock mechanism. Two-point hardware sets top and bottom together, which matters on storefront and aluminum openings where a single hand pass is expected.

The Deltana 6FBS is a 6 inch bolt. Where a longer face is needed, the Delaney 4101 is a 7 inch slide type mortise-in flush bolt and the Delaney 4363 is a 7 inch mortise extension flush bolt. Measure the existing mortise length in the door edge before switching, since a 7 inch face will not drop into a pocket cut for 6.

The Deltana 6FBS comes in Oil Rubbed Bronze, Polished Brass, Unlacquered Brass, Antique Brass, PVD Polished Brass, Brushed Nickel, Antique Nickel, Polished Chrome, Brushed Chrome, and Paint Black, with the body in solid brass. Emtek also offers flush bolts in its decorative line. Where the pair carries visible trim on both leaves, pick the bolt from the same decorative family as the lever or handleset so the door edge does not read as a different program.