Schlage Commercial 12-631 B660 Series Deadbolt, 2-3/4" Backset, Square Corner, 1-1/8" x 2-1/4" Faceplate, 1" Housing Diameter

Three numbers decide it. The 12-631 is set on a 2-3/4 inch backset, the bolt housing is 1 inch in diameter so it seats in a 1 inch edge bore, and the square corner faceplate measures 1-1/8 x 2-1/4 inches. If the B660 already in the door was prepped to those figures, the 12-631 goes back into the existing mortise and cross bore with no drilling.

Just the bolt. The 12-631 is the replacement deadbolt unit that goes into the door edge on a B660 Series deadbolt, so you keep the existing cylinder, thumbturn and roses and swap only the bolt and faceplate. Order it when the bolt is binding, snapped, or the faceplate is damaged, not when you need a whole new lock for the opening.

No handing to specify. A deadbolt throws straight out with a square end and works the same in a left or right hand door, unlike a spring latch with an angled face. What you do have to get right is the 2-3/4 inch backset and the 1 inch edge bore.

Two finishes are made: 612 satin bronze and 626 satin chrome. Since only the faceplate shows on the edge of the door once the bolt is in, match it to the strike and hinges on that opening rather than to the trim on the face of the door. 626 satin chrome is the common commercial standard, so a property with mixed hardware is usually running that.

The 12-631 is built for commercial use and the bolt is stainless steel, which is what you want on an entry that takes weather at the edge of the door and gets thrown dozens of times a day. Stainless resists the corrosion that seizes a plated bolt in the housing, which is the usual reason these get replaced on exterior openings in the first place.

They are not the same part. The Deltana G1RLE275 and G1RLP275 are regular spring latches on a 2-3/4 inch backset, entry function and passage/privacy function respectively, meaning they retract when someone turns the knob or lever. The 12-631 is a deadbolt: it only moves when the key or thumbturn is turned. Same backset, completely different job. Use the Deltana units for the knob or lever bore, not for the deadbolt bore above it.

Swapping the 12-631 bolt only makes sense if you are keeping the B660 and its cylinder. If you would rather drop the keys, the Lockey M230 is a mechanical keyless combination lock with a deadlocking spring latch and an adjustable backset, and it covers doors 1-1/8 to 2 inches thick. No wiring, no batteries, and you change the code instead of rekeying when a tenant or crew turns over.

Not this bolt. The 12-631 is a B660 replacement deadbolt for a standard door edge prep on a 2-3/4 inch backset. For an active sidelite, the Accentra YSSL10 is a security sidelite auxiliary latch with an ADA compliant thumbturn, fits 1-3/4 inch thickness, and is fire rated. That is the part for a glass front opening where the sidelite has to lock independently.

They take the same backset but do different jobs. The Schlage 12-631 is a deadbolt latch built for B660 Series deadbolts, with a square corner 1-1/8 by 2-1/4 inch faceplate and a 1 inch housing diameter, and it throws only when the cylinder or thumbturn is turned. The Deltana G1RLE275 is a Grade 1 regular latch in an entry function, meaning it is the spring latch that retracts when the knob or lever is turned. A door carrying both a bored lockset and a deadbolt above it uses one of each rather than one in place of the other, so confirm which bore you are servicing before you order.

The Schlage 12-631 is built to a 2-3/4 inch backset, so a 2-3/8 inch bore needs a different part. Deltana covers that backset with two Grade 1 regular latches: the G1RLE238 in an entry function and the G1RLP238 in a passage or privacy function. Both are lockset latches driven by the knob or lever, so match the function to what the door actually carries. If the 2-3/8 inch bore is the lockset and there is a separate deadbolt bore above it, the deadbolt latch is ordered separately, and the 12-631 covers a 2-3/4 inch deadbolt backset on a B660 Series deadbolt.

No, they are not interchangeable parts. The Schlage 12-631 is a replacement latch for B660 Series deadbolts, so it drops into an opening that already has the deadbolt body and trim in place. The Lockey M230 is a complete mechanical keyless digital combination deadlocking spring latch lock with an adjustable backset, sized for doors 1-1/8 to 2 inches thick, so it replaces the entire lock rather than servicing an existing one. Take the M230 when you are converting an opening to keyless operation, and the 12-631 when the B660 deadbolt stays on the door and only the latch is being changed out.

No. Replacement latches are tied to the lock series they were built for, and these two are not cross-compatible. The Dexter deadlatch is made for the C1000 Series, while the Schlage 12-631 is made for B660 Series deadbolts with a 2-3/4 inch backset, a square corner 1-1/8 by 2-1/4 inch faceplate and a 1 inch housing diameter. Identify the lock body already on the door first, then order the latch that matches that series, since the faceplate cutout and housing bore are what decide whether the part seats.

The Schlage 12-631 is a deadbolt latch for B660 Series deadbolts, so it serves a bored deadbolt in the door leaf itself. A sidelite is a different application: the Accentra YSSL10 is a security sidelite auxiliary latch with an ADA compliant thumbturn, it carries a fire rating, and it is sized for 1-3/4 inch doors. Use the YSSL10 where the sidelite panel needs to be secured with a thumbturn, and the 12-631 where a B660 deadbolt in the active leaf needs its latch replaced.

The Schlage 12-631 is a commercial stainless steel replacement latch for B660 Series deadbolts at a 2-3/4 inch backset, so it covers the deadbolt side of the opening. On the lockset side, Deltana's regular latches carry a Grade 1 rating across four configurations: the G1RLE275 and G1RLE238 in an entry function at 2-3/4 and 2-3/8 inch backsets, and the G1RLP275 and G1RLP238 in a passage or privacy function at those same two backsets. Standardizing across a portfolio is usually easier if you fix the backset first and then order the function each door needs, since that keeps one bore dimension across the buildings and lets the function vary door by door.