Schlage A Series A301-403 - Housing and Cap, 1-3/8" to 1-7/8" Door, (except A43, A79)

No. The A43 and A79 are specifically excluded from what the A301-403 housing and cap covers. Every other A Series function in the 1-3/8 to 1-7/8 inch door range is fine, so pull the function code off the lock or the original hardware schedule first. If the opening turns out to be an A43 or A79, this is the wrong part and you will need the housing that matches that function.

It does, and the A301-403 is a finish specific part rather than one body that gets a finish applied later. Five finishes are sold: 605 bright brass, 609 antique brass, 612 satin bronze, 613 oil rubbed bronze, and 626 satin chrome. Order by the number, not the name. Satin chrome, 626, is the one most commercial openings are standardized on, so a building running 626 on the other doors takes the 626 housing and cap.

Genuine. The A301-403 housing and cap is a certified Schlage service part for the A Series, not a generic equivalent. That matters when a facility is standardized on Schlage and the maintenance spec calls for factory parts on repairs.

It is sold as the housing and cap, an A Series replacement part, so it is not a keyed cylinder in its own right and it will not solve a keying problem on its own. If what you actually need is a keyed cylinder for other hardware, that is a different part entirely: a rim cylinder like the Sargent Signature 10-34 6-pin or a mortise cylinder like the Sargent Signature 10-40 serve rim and mortise applications, and neither one goes into a Schlage A Series knob.

Three things settle the order. First the finish, since the part is finish specific and comes in 605, 609, 612, 613, or 626. Second the door thickness, which has to land between 1-3/8 and 1-7/8 inches. Third the lock function, because the A43 and A79 are excluded. Get those three right and the A301-403 is the correct A Series service part.

No, those are two different parts for two different lock types. The Sargent 10-40 is a 6-pin mortise cylinder in Sargent's 40 Series, built to thread into the cylinder well of a mortise lock case. The Schlage A301-403 is a housing and cap for A Series knob locks, sized for doors 1-3/8 inch through 1-7/8 inch thick and covering the A Series functions except A43 and A79. A mortise cylinder has no role in an A Series knob; the housing and cap is the part that carries the key mechanism in that knob. If the opening you are working on is a mortise lock case rather than a Schlage A Series knob, the 10-40 is the cylinder format that fits it.

They are not interchangeable. The Sargent 10-34 is a 6-pin rim cylinder with protected key control, part of Sargent's 34 Series, and a rim cylinder mounts through the door from the outside with a tailpiece driving hardware on the inside face. The Schlage A301-403 is a replacement housing and cap for Schlage A Series knob locks on doors 1-3/8 inch to 1-7/8 inch thick, excluding A43 and A79. If the door you are re-keying carries a rim device, the 10-34 is the rim format for it; if the door carries an A Series knob and the housing or cap is what is damaged, the A301-403 is the Schlage service part for that assembly.

Sort them by what the opening is prepped for. Rim devices take the Sargent 10-34, a 6-pin rim cylinder with protected key control in the 34 Series. Mortise lock cases take the Sargent 10-40, a 6-pin mortise cylinder in the 40 Series. Deadbolts take the Sargent 10-ALC, a Signature Series 6-pin deadbolt cylinder assembly. Openings set up for removable cores take the Sargent 10-6300, a Signature LFIC removable core cylinder in the 6300 Series with a factory-installed cam. Schlage A Series knobs are their own line: the A301-403 is the Schlage housing and cap service part for those knobs on doors 1-3/8 inch through 1-7/8 inch thick, excluding A43 and A79, and it comes in 605 Bright Brass, 609 Antique Brass, 612 Satin Bronze, 613 Oil Rubbed Bronze, and 626 Satin Chrome so you can match the finish already on the door.

You need a separate part for the deadbolt. The A301-403 is the housing and cap for Schlage A Series knob locks on doors 1-3/8 inch to 1-7/8 inch thick, apart from A43 and A79, so it addresses the knob only. For the deadbolt itself, the Sargent 10-ALC is a Signature Series 6-pin deadbolt cylinder assembly with protected key control, built for deadbolt applications rather than for a knob housing. Treat them as two line items on the order: the knob repair part and the deadbolt cylinder.