Deltana 24SB 24" Surface Bolt, Heavy-Duty, Solid Brass

It mounts to the face of the door, on the inside, so there is no mortising of the lock edge. You screw the bolt body and the rod guides to the door face and set the matching strike where the rod lands. Deltana sells strikes to match the bolt, so the strike gets selected along with the finish.

It is a plain slide bolt with no key. Anyone standing on the inside face of the door can throw or retract it. Where you need the bolt itself secured, the Ives SB1630 is a locking surface bolt with keyed security and a 1 inch throw. The 24SB is the right part when the goal is added holding force on an inactive leaf or an after-hours door, not access control.

For a rated opening, specify a bolt that carries the rating. The Ives SB1630 is a heavy duty steel locking surface bolt with a 1 inch throw and keyed security, rated 3-hour UL listed. The Ives SB1600 is heavy duty steel with a 3-1/2 inch throw and is fire rated, and the Ives SB1640 is a fire rated brass construction bolt with a 1 inch throw. The SB1640 is the one to look at if the opening is rated but the hardware still needs to read as brass. The Deltana 24SB is a heavy-duty solid brass surface bolt sold for commercial use with a 24 inch rod, and it is the choice for non-rated openings where the long rod and the finish match matter.

The Deltana 24SB is a heavy-duty solid brass surface bolt with a 24 inch rod. The steel counterpart is the Ives SB1600, a heavy duty steel surface bolt with a 3-1/2 inch throw that is fire rated. Both are surface mounted bolts for the inside face of an inactive door leaf; the difference is the body material and the fact that the Ives carries a fire rating. If the opening is a painted hollow metal door or a rated pair, the SB1600 is the one that matches the door. If the opening is a finished wood or glass front entry where the bolt is seen, the brass 24SB is finished to match the rest of the trim.

The Deltana 24SB carries a 24 inch rod, which is sized to reach from a mid-height mounting point to the head or sill of a tall leaf. For a short run, the Emtek 8511 is a 6 inch solid brass surface bolt, and the Ives SB360 is a heavy-duty steel surface bolt with a 1-1/4 inch throw in a 12 inch length. Both mount to the surface the same way; you are choosing rod length against how far the bolt has to travel to the strike, not a different kind of hardware.

Solid brass, both the listed material and the substrate. That matters on an unlacquered or antique finish, where the surface is meant to wear and patina rather than flake off a plating, and it is why this one is a reasonable choice on an exterior-facing inactive leaf where a plated steel bolt would rust at the screw heads.

Ten finishes: PVD Polished Brass, Polished Brass, Unlacquered Brass, Antique Brass, Oil Rubbed Bronze, Brushed Nickel, Antique Nickel, Polished Chrome, Brushed Chrome, and Paint Black. If you are standardizing a building, PVD Polished Brass is the one that holds its shine without ongoing polishing, while Unlacquered Brass is the one that will darken over time on purpose.

The 24SB is classed commercial and built heavy-duty in solid brass, so it holds up on multi-family, hospitality, and light commercial openings where a decorative brass finish is wanted. For higher-traffic institutional work, the ABH HD1805 heavy duty surface bolt uses a 3/4 inch stainless steel bar and auto-locks, and the Ives SB360 is a heavy duty steel bolt with a 1-1/4 inch throw in a 12 inch length.

A surface bolt like the 24SB screws onto the door face and is visible, which makes it a retrofit you can add to a door that has no prep at all. A flush bolt is mortised into the edge of the door and hides. If the door is already hung and you do not want to route it, the surface bolt is the one that goes on. If appearance on the inside face matters more than install effort, look at a flush bolt instead.

The 24SB is sold each, and Deltana offers an assortment of matching strikes for its surface bolts, so the strike is chosen alongside the bolt and the finish. Decide first where the rod lands, head jamb or floor, since that determines which strike style you need.

The ABH HD1805 is a heavy duty surface bolt with an auto-locking 3/4 inch stainless steel bar, so the bolt latches itself when thrown and the bar is stainless. The Deltana 24SB is a heavy-duty solid brass surface bolt with a 24 inch rod, offered in finishes including polished brass, oil rubbed bronze, brushed nickel and polished chrome. Choose the HD1805 when the auto-locking action and stainless bar suit a service or utility opening, and the 24SB when the bolt is on a finished door and needs to match the surrounding brass trim.

The Delaney Decorative Solid Brass Surface Bolt, part BV7600, is a decorative surface bolt in solid brass, and Delaney also offers a plain Solid Brass Surface Bolt, part 410309. Both are brass like the Deltana 24SB. The 24SB is the heavy-duty version with a 24 inch rod, which is what distinguishes it when the bolt has to span a tall leaf rather than sit as a short decorative throw near the head or sill.

No, and the two numbers are not the same measurement. The Deltana 24SB is described by rod length, 24 inches, which is how far the bolt body and rod run along the face of the door. Throw is how far the bolt projects into the strike: the Ives SB1600 has a 3-1/2 inch throw, the SB360 has a 1-1/4 inch throw, and the SB1630 and SB1640 each have a 1 inch throw. A buyer sizing the strike prep at the head or sill is working from throw; a buyer sizing the visible run of hardware on the door face is working from rod length.

The Deltana 24SB is a commercial heavy-duty solid brass surface bolt, 24 inch rod, offered in ten finishes including PVD polished brass, unlacquered brass, antique brass, antique nickel, brushed chrome and paint black, which is what makes it easy to hold one bolt across doors with different trim. Where a facility has rated openings mixed in, the Ives SB1600 and SB1640 are fire rated and the Ives SB1630 is 3-hour UL listed, so those cover the rated leaves. The Trimco 4800 Series is a further surface bolt line to hold as a second source. A common approach is one brass bolt for the finished non-rated doors and one rated steel bolt for the rated pairs, rather than forcing a single part across both.

For matching a brass program, the Delaney Solid Brass Surface Bolt and the Delaney Decorative Solid Brass Surface Bolt are both solid brass options, and the Emtek 8511 is a 6 inch solid brass bolt. The Trimco 4800 Series is another surface bolt line. The Deltana 24SB is the long-rod choice among them at 24 inches, so it is the one to use where the throw has to reach a head or floor strike a long way from the handle height.