Pamex DD05-704 4" Surface Bolt

No mortise. It is a surface-applied bolt, screwed straight onto the face of the door, so there is no routing and no prep beyond pilot holes and drilling for the receptacle. That is the practical difference from a flush bolt, which gets let into the door edge.

Four inches is a short bolt, sized for a door edge or head where the receptacle sits close to the bolt body. If you need to reach across a gap, up to a transom, or down past a thick threshold, go longer: the Emtek 8511 solid brass surface bolt is 6 inches, and the Ives SB360 comes in a 12 inch length. Measure from where the bolt body can sit on the door to where the receptacle has to land.

The Pamex DD05-704 is a 4 inch x 5/8 inch residential surface bolt in brass, supplied with two receptacle plates and wood screws for surface screw application. Where the opening calls for a heavier bolt, the Ives SB1600 is a heavy duty steel surface bolt with a 3-1/2 inch throw, and the Ives SB360 is a heavy-duty steel surface bolt with a 1-1/4 inch throw in a 12 inch length. The ABH HD1805 is a heavy duty surface bolt with an auto-locking 3/4 inch stainless steel bar. Those three are steel-bodied bolts built for higher traffic openings, where the DD05-704 is a brass residential bolt.

The Pamex DD05-704 is a residential surface bolt in brass, 4 inch x 5/8 inch overall. For a fire rated opening, choose a bolt carrying the rating: the Ives SB1630 is a heavy duty steel locking surface bolt with a 1 inch throw and keyed security, rated 3-Hour and UL Listed. The Ives SB1600 and the Ives SB1640 are also fire rated, the SB1640 in brass construction with a 1 inch throw. Matching the label on the door is what decides this one, so the fire rated Ives bolts are the ones to specify on a labeled opening.

The Pamex DD05-704 is a 4 inch x 5/8 inch surface bolt. For a taller reach on the same door, the Emtek 8511 is a 6 inch solid brass surface bolt, and the Ives SB360 comes in a 12 inch length as a heavy-duty steel bolt with a 1-1/4 inch throw. A longer bolt body puts the throw closer to the head or sill while keeping the operating end within reach, which is the usual reason to move up from a 4 inch bolt.

Two receptacle plates and wood screws ship with the bolt. Two plates is what lets you mount it on a door that needs a strike at the head and another at the threshold, or gives you a spare position. The screws supplied are wood screws, so if you are fastening into metal or a hollow frame you will need your own fasteners.

Not handed. A surface bolt mounts to whichever face and edge you screw it to, so the same DD05-704 works on a left or right hand door. What you do decide on site is orientation, vertical for a head or threshold receptacle, horizontal for an astragal or jamb.

No key and no locking mechanism. The DD05-704 is a plain slide bolt, thrown and released by hand from the side it is mounted on. If you need it to stay put or need key control, the Ives SB1630 is a locking surface bolt with keyed security, and the ABH HD1805 uses an auto-locking bar.

The Pamex DD05-704 is a plain brass surface bolt offered in 609 Antique Brass, 605 Bright Brass, 613 Oil Rubbed Bronze, 619 Satin Nickel and 625 Bright Chrome, so it can be matched to most trim on a residential door. For a more ornamental face, the Delaney Decorative Solid Brass Surface Bolt is a decorative surface bolt, and the Emtek 8511 is a solid brass surface bolt in a 6 inch length. Both are brass-bodied like the Pamex, so the difference is the styling of the bolt face rather than the mounting method.

The Pamex DD05-704 mounts with surface screws and ships with two receptacle plates and wood screws, so the bolt body sits on the face of the door rather than being mortised into the door edge. Every bolt in the surface bolt group works this way, including the Delaney Solid Brass Surface Bolt, the Trimco 4800 Series, and the Ives SB1600. A true mortised flush bolt requires routing the door edge; if the door is already prepped for a mortised bolt, a surface-applied bolt will not drop into that prep.

The Pamex DD05-704 is a residential-duty brass surface bolt, 4 inch x 5/8 inch, supplied with two receptacle plates. For a commercial standard across a facility, the Trimco 4800 Series is a surface bolt series, and Ives offers a family that covers the common cases: the SB1600 heavy duty steel bolt with a 3-1/2 inch throw, the SB1630 heavy duty steel locking bolt rated 3-Hour and UL Listed, the brass SB1640 with a 1 inch throw, and the heavy-duty steel SB360 in a 12 inch length. Specifying within one series keeps throw, mounting and finish consistent from door to door.

Five: 605 bright brass, 609 antique brass, 613 oil rubbed bronze, 619 satin nickel, and 625 bright chrome. Those are standard BHMA finish numbers, so matching them to the knobs or hinges already on the door is a matter of reading the number off the existing hardware.