BEST 48H Standard Series Morti...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$732.00
$327.53
BEST BEST 48H Standard Series Mortise Deadlock (R-Single Cylinder - Classroom Function) 7-Pin Housing, Accepts all BEST Cores BES-48H-R

BEST 48H Standard Series Mortise Deadbolt with Single Cylinder Classroom Function

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Model: 48H7R626
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$732.00
$327.53
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BEST 48H Standard Series Mortise Deadbolt with Single Cylinder Classroom Function

Heavy-Duty Commercial Mortise Lock Solution

The BEST 48H Standard Series Mortise Deadbolt delivers professional-grade security with single cylinder classroom function and 7-pin housing that accepts all BEST cores. Featuring a 2 3/4" backset and 1" throw stainless steel deadbolt, this heavy-duty lock is designed for doors 1-3/4" thick with optional thick door configuration available up to 3". The mortise lock incorporates 0.095" cold rolled steel construction with zinc dichromate plating for superior corrosion protection and durability in demanding commercial applications.

Professional Features & Benefits

  • Heavy-Duty Steel Construction: 0.095" cold rolled steel case, cover, and armored front provide exceptional strength and durability for commercial applications.
  • Enhanced Security Design: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for superior strength and security performance.
  • Reversible Operation: Non-handed design with reversible latch that rotates 180 degrees for easy handing change without opening the case.
  • Precision Engineering: Roller bearing hub mechanism provides smooth, wear-resistant operation with enhanced cycle life and reduced strike wear.
  • Advanced Case Integrity: Four case cover screws (one at each corner) plus interlocking armored front and cover design at the latch ensure maximum structural integrity.
  • Visual Lock Indication: Locking toggle includes clear indication of "locked" and "unlocked" states with optional visual indicator showing padlock icons.
  • Cylinder Security: Solid machined cylinder rings with wavy washer provide resistance to wrenching, while cylinder security screw prevents removal without first removing interchangeable core.
  • Self-Aligning Installation: Staked assembly design allows armored front to self-align with door bevel during installation for fast, easy, and accurate mounting.

Technical Specifications

Case: 0.095" cold rolled steel, 3-3/8" x 4-3/16" x 1". Steel is zinc dichromate plated for corrosion protection.
Faceplate: Brass or bronze material, 5-3/8" x 1-3/16" x 7/32" .
Strike: Brass, bronze, or stainless steel base material.
48HS1: Flat strike supplied standard, 3-1/2" x 1-1/8" x 3/32"
Fits standard door frame cut-out as specified in ANSI A115.5.
48HS2: Lipped strike supplied as option, 4-7/8" x 1-1/4" x 3/32". Fits standard door frame cut-out as specified in ANSI A115.1.
Backset: 2 3/4"
Door Thickness: Standard lock configuration designed for doors 1-3/4" thick. Thick door configuration available for doors up to 3" thick (specify thickness when ordering). NOTE: “R" function not available for thick door.
Deadbolt: Stainless steel, 1" throw
Trim: Cylinder and trim ring only.
Finishes: Available in all finishes offered for 45H.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness (standard 1-3/4" or up to 3" for thick door configuration), mortise pocket dimensions, and handing as applicable.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for the 3-3/8" x 4-3/16" x 1" case.
  3. Prepare door by cutting mortise pocket and drilling required holes for the 2 3/4" backset configuration and 1" deadbolt throw.
  4. Install mortise case into door pocket and secure the armored front assembly, allowing self-alignment with door bevel during installation.
  5. Mount strike assembly (flat 48HS1 standard or optional lipped 48HS2) to frame per ANSI specifications and adjust for proper deadbolt engagement.
  6. Test lock operation including deadbolt throw, latch function, and visual indicators to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Educational Facilities and Classroom Security
  • Commercial Office Buildings
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities
  • Retail Establishments

Why Choose BEST Quality?

BEST 48H Series mortise locks deliver professional-grade reliability with heavy-duty 0.095" cold rolled steel construction and precision-engineered components rated for demanding commercial applications. The solid one-piece stainless steel anti-friction latch provides 50% more surface contact for superior strength, while the roller bearing hub mechanism ensures smooth, wear-resistant operation. Engineered for institutional and commercial environments where dependable security performance is essential.

Product Specs

Series:
48H
Standard Cylinder:
SFIC Prep Less Core
Duty Level:
Heavy Duty
Keyed Function:
Single Cylinder
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Mortise
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Mortise
Product Attribute:
Mortise Locks
Electronic:
No
Product Category:
Mechanical Locks
Backset (Distance):
2 3/4"
Department:
Door Hardware

BEST 48H7R626 – Frequently Asked Questions

1) Will the BEST 48H mortise deadbolt fit a 1-3/4 inch door?
That's exactly what the standard 48H configuration is built for: 1-3/4 inch doors with a 2-3/4 inch backset. If your doors are thicker, BEST makes a thick door configuration good up to 3 inches, and you have to call out the actual thickness when you order it. One catch worth knowing before you spec it: the R (single cylinder classroom) function is not available in the thick door build, so on doors over 1-3/4 inches you need a different function.
2) Does the BEST 48H deadbolt take BEST interchangeable cores, and does it come with one?
The 48H has 7-pin housing and accepts all BEST cores, but it ships prepped less core, so the core is a separate line on your order. Trim is cylinder and trim ring only, no lever or knob, because this is a deadbolt-only case, not a lockset. If you already key your building on BEST SFIC, this drops straight into that keying system. A cylinder security screw keeps the cylinder from being pulled without first removing the core.
3) What does single cylinder classroom function mean on a BEST 48H deadbolt?
Key outside only. The R function 48H is a single cylinder deadbolt, so the bolt is thrown and retracted by key from the outside face and there is no thumbturn on the inside. That is the classroom pattern: staff control the bolt with a key and nobody inside can throw it. The locking toggle shows locked and unlocked states, with an optional visual indicator using padlock icons. If you need key operation from both sides, a double cylinder deadbolt like the Sargent 4874, also a 2-3/4 inch backset mortise deadbolt, is the different animal.
4) Will a BEST 48H deadbolt drop into my existing ANSI mortise frame prep?
The strike is the deciding piece. The 48HS1 flat strike ships standard at 3-1/2 x 1-1/8 x 3/32 inches and fits the standard frame cut-out per ANSI A115.5. If your frames are prepped for the lipped strike, order the 48HS2 option, 4-7/8 x 1-1/4 x 3/32 inches, which fits the ANSI A115.1 cut-out. The bolt itself is stainless with a 1 inch throw, so it reaches well into a standard strike pocket. Case size for the door mortise is 3-3/8 x 4-3/16 x 1 inches, faceplate 5-3/8 x 1-3/16 x 7/32 inches.
5) What do I have to order alongside a BEST 48H mortise deadbolt to finish the job?
Three things to settle on the order form. First, the core: the housing is 7-pin SFIC prep less core, so the BEST core comes separately and gets keyed to your system. Second, the strike: the flat 48HS1 is included, so add the lipped 48HS2 only if your frame needs it. Third, door thickness: standard is 1-3/4 inch, and anything up to 3 inches has to be called out as thick door (and that rules out the R function). Then pick your finish. The visual indicator with padlock icons is also an option rather than standard.
6) What is the closest equivalent to the BEST 48H single cylinder mortise deadbolt if I need a double cylinder instead?
The BEST 48H mortise deadbolt is a single cylinder keyed function on a 2 3/4 inch backset. When the opening needs key operation from both sides, the Sargent 4874 is a double cylinder mortise deadbolt on the same 2-3/4 inch backset. Both are deadbolt-only bodies rather than latching locksets, so the door prep is the same class of mortise pocket; the difference is whether the inside face takes a second cylinder or not.
7) What is the alternative to a keyed BEST 48H deadbolt if the school wants keypad codes instead of keys?
The BEST 48H is a mechanical, non-electronic deadbolt keyed to a BEST interchangeable core. If credentials are supposed to replace keys, the Alarm Lock DL4500 is a Grade 1 electronic mortise deadbolt with 2,000 user codes and a privacy keypad, fitting doors 1-5/8 to 1-7/8 inch. Note the door thickness window: the 48H covers 1-3/4 inch standard with a thick door build to 3 inch, while the DL4500 is limited to the 1-5/8 to 1-7/8 inch range.
8) The opening needs to be tied into access control and released electrically. What replaces a mechanical BEST 48H deadbolt there?
The BEST 48H is a mechanical lock with no electrical option. For an electrified mortise opening, the Command Access ML190 is a heavy duty motorized mortise lock with field selectable EL/EU operation on 24VDC in a storeroom function, and the Schlage L9092EU 03A is a heavy duty electric lock/unlock outside lever mortise lock, keyed outside, with request to exit, on 12/24VDC for 1-3/4 inch doors. Both need power to the door frame, which the 48H does not.
9) Do I need to specify handing for a BEST 48H mortise deadbolt?
No. The 48H is non-handed, and the reversible latch rotates 180 degrees so you can change handing without opening the case. That makes it a safe stock item if you are buying for a mixed building and do not want to sort left hand from right hand at the shelf. Contrast that with something like the Baldwin 6310190RRLS, which is sold as a specific right hand reverse lever mortise lock.
10) Is a mortise deadbolt like the BEST 48H the right choice, or should I use a full classroom lockset?
A deadbolt case gives you security only, no latch and no lever operation, so the door still needs a separate latch or a panic device for normal use. If what you actually want is one lock that both latches the door and keys like a classroom, buy a classroom lockset instead: the Corbin Russwin ML2003 or the Cal-Royal NM8070 are both Grade 1 classroom mortise locksets for 1-3/4 inch doors. Reach for the 48H when you are adding key-controlled deadbolting to an opening that already latches, or when a spec calls for a separate bolt.
11) What finishes can I get the BEST 48H mortise deadbolt in to match the rest of my doors?
Twelve, and they cover the usual commercial matches: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 oil-rubbed satin bronze, 618 bright nickel, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, 626AM satin chrome antimicrobial, and 690 statuary dark bronze. 626 is the workhorse on most commercial openings. The 626AM antimicrobial option is the one to specify in healthcare or food service where touch surfaces are part of the spec. Faceplates are brass or bronze base material, strikes brass, bronze, or stainless.
12) How tough is the BEST 48H deadbolt for a high-traffic school or institutional door?
Built for abuse: the case, cover, and armored front are 0.095 inch cold rolled steel with zinc dichromate plating against corrosion, and four case cover screws (one per corner) plus an interlocking armored front and cover at the latch hold the case together under attack. The bolt is solid stainless with a 1 inch throw. The roller bearing hub cuts wear over cycles. It is catalogued heavy duty, commercial, and it is a purely mechanical lock, nothing to power or battery to change.
13) I want a classroom lock with keypad or card access instead of a key. What are my options versus the BEST 48H?
The 48H is mechanical only, so if credentials or code changes matter, look at an electronic mortise lock. In classroom function there is the Alarm Lock DL3500CR Trilogy, Grade 1 with 300 user codes, and the DL2700CR Trilogy T2 with a weatherproof build, both for doors 1-5/8 to 1-7/8 inches. For RFID, TownSteel's FME-2000 and FME-4000 are Grade 1 classroom mortise locksets for 1-3/4 inch doors. Note the Alarm Lock door thickness range is narrower than the 48H's 1-3/4 inch standard, so check the leaf you are working with.
14) Will the BEST 48H deadbolt match the finishes and cores on my existing BEST 45H locksets?
Yes on both counts. The 48H is offered in all the finishes offered for the 45H, so the deadbolt and the lockset on the same opening will match, and the 7-pin housing accepts all BEST cores, meaning the same core and key you use on the 45H works here. That is the reason to stay in the BEST family across a facility rather than mixing brands on one door.
15) Is a Sargent 130KB thumbturn a substitute for the BEST 48H mortise deadbolt?
No. The Sargent 130KB is a standard duty mortise thumbturn, and the Sargent 130W is a mortise thumbturn with a round backplate; both are trim pieces that operate a bolt from the inside. The BEST 48H is the heavy duty keyed mortise deadbolt body itself, single cylinder with a 1 inch stainless throw and a 7-pin housing that accepts BEST cores. A thumbturn is ordered alongside a bolt, not in place of one.
16) For a dorm room where the resident needs to lock the deadbolt from inside without a key, what mortise lock works instead of the BEST 48H?
The BEST 48H is a single cylinder keyed deadbolt, so the bolt is thrown by key on the outside. For a residence hall opening where the occupant should secure the room from inside, the Sargent 7925 is a Grade 1 heavy duty corridor/dormitory function mortise lock with rose trim and a single cylinder deadbolt built into the lockset, which combines the latch and bolt in one case.
17) We standardize on interchangeable cores across the campus. Which mortise locksets besides the BEST 48H take an IC core?
The BEST 48H ships prepped for a small format interchangeable core less core, with 7-pin housing that accepts all BEST cores. If the same keying program has to extend to latching openings, the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset offered with an interchangeable core option for 1-3/4 inch doors. Confirm the core format your system uses before mixing bodies.
18) Can I use the BEST 48H on an ornamental iron or narrow stile door?
The BEST 48H mortise deadbolt is built around a 3-3/8 inch by 4-3/16 inch by 1 inch case for doors 1-3/4 inch thick, with a thick door build up to 3 inch, which is a commercial door prep. For a 1 inch thick ornamental iron door the Marks USA 21AC and 22AC are entrance double cylinder ornamental iron mortise locks with a round knob, both listed for 1 inch doors. Those are a different case size entirely, so the 48H prep will not transfer.
19) What do I order for the same opening if it just needs to latch and never lock?
The BEST 48H is a keyed mortise deadbolt. Where the opening takes no key at all, the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating, and the Hager 3810S is a Grade 1 passage mortise lock with rose on a 2-3/4 inch backset for doors 1-3/4 inch to 2-1/2 inch. The Hager shares the 48H 2 3/4 inch backset.
20) Is the Kaba Ilco 185 the same kind of part as the BEST 48H mortise deadbolt?
They are the closest match in kind. The Kaba Ilco 185 Series is a deadbolt function mortise lock with no handing, sold in a single pack. The BEST 48H is also a deadbolt function mortise body and is non-handed by design, with a reversible latch that rotates 180 degrees without opening the case, on a 2 3/4 inch backset with a 1 inch stainless throw. Check case dimensions and cylinder prep against the existing pocket before treating either as a drop-in for the other.
21) For a restroom or patient room that needs privacy rather than a keyed bolt, what mortise lock is used instead?
The BEST 48H is a keyed single cylinder deadbolt intended for commercial security openings. Privacy openings take a different function: the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors, and the Hager 3840S is a Grade 1 privacy mortise lock on a 2-3/4 inch backset for doors 1-3/4 inch to 2 inch. The Hager matches the 48H 2 3/4 inch backset.
22) We need a behavioral health room bolt with no ligature points. What is offered next to the BEST 48H?
The BEST 48H is a standard commercial mortise deadbolt with cylinder and trim ring. Where an anti-ligature opening is specified, the TownSteel MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, the MRX-A-01 is the same function in a ligature resistant arch trim, and the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset described as ligature resistant and ADA compliant in satin stainless steel.
23) What is the difference between ordering a BEST 48H deadbolt and an Accentra 8805FL storeroom lock for an office suite?
The Accentra 8805FL is a Grade 1 storeroom function mortise lock with an Arcadia lever from the 8800 Series, so the outside lever stays locked and the key retracts the latch for entry. The BEST 48H is a mortise deadbolt on a 2 3/4 inch backset with a 1 inch stainless throw and no lever, keyed from one side, designed as the bolt for the opening. If the suite door needs one device that both latches and locks, the 8805FL covers it; the 48H is used where a separate bolt is wanted.
How fast can I get the BEST 48H7R626 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the BEST 48H7R626 come with a warranty?
Absolutely. The BEST 48H7R626 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the BEST 48H7R626?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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