BEST 48H Series Mortise Deadlo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$548.00
$340.00
BEST BEST 48H Standard Series Mortise Deadlock (L-Single Cylinder Function) 7-Pin Housing, Accepts all BEST Cores BES-48H-L

BEST 48H Series Mortise Deadlock with Single Cylinder Function and 7-Pin Housing

(No reviews yet) Write a Review

Model: 48H7L626
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$548.00
$340.00
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

BEST 48H Series Mortise Deadlock with Single Cylinder Function and 7-Pin Housing

Heavy-Duty Commercial Mortise Lock Solution

The BEST 48H Series Mortise Deadlock delivers professional-grade security with single cylinder function and 7-pin housing designed to accept all BEST cores. This heavy-duty commercial lock features a 2 3/4" backset, 1" deadbolt throw, and robust construction with 0.095" cold rolled steel case measuring 3-3/8" x 4-3/16" x 1". Engineered for doors 1-3/4" thick with thick door configurations available up to 3", this mortise deadlock provides superior strength and security for 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.
  • Superior Latch Design: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for enhanced strength and security.
  • Reversible Operation: Reversible latch rotates 180 degrees for easy handing change without opening case, with non-handed cylinder retainer for installation flexibility.
  • Enhanced Case Integrity: Four case cover screws (one at each corner) plus interlocking armored front and cover design at the latch ensure robust construction.
  • Smooth Operation: Roller bearing hub mechanism provides smooth, wear-resistant operation with enhanced cycle life and reduced strike wear.
  • Security Features: Solid machined cylinder rings with wavy washer provide resistance to cylinder wrenching, with security screw preventing core removal.
  • Professional Installation: Self-aligning trim mechanism and armored front design allow for fast, easy, and accurate installation with automatic door bevel alignment.
  • Visual Lock Indication: Locking toggle includes clear indication of locked and unlocked states with optional visual indicator showing padlock icons.

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 thick door up to 3"), mortise pocket dimensions, and handing as applicable to this product.
  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 and frame by drilling required holes and routing mortise pocket as specified in manufacturer instructions, ensuring proper fit for the armored front assembly.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications, utilizing the four corner case cover screws.
  5. Adjust operational components including the four position hub toggle design for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function of the 1" deadbolt throw, latch mechanism, and visual indicators. Make final adjustments as needed and refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

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

Why Choose BEST Quality?

BEST 48H Series mortise deadlocks deliver professional-grade reliability with heavy-duty 0.095" cold rolled steel construction and precision-engineered components designed for demanding commercial applications. The solid one-piece stainless steel latch provides 50% more surface contact for superior strength, while the roller bearing hub mechanism ensures smooth, wear-resistant operation. Engineered for dependable performance where security and durability are 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 48H7L626 – Frequently Asked Questions

1) Will the BEST 48H mortise deadlock fit a 1-3/4 inch door, and what about thicker doors?
Standard configuration on the 48H deadlock is built for 1-3/4 inch doors, which is the usual commercial thickness. For anything heavier, a thick-door configuration covers doors up to 3 inches, but you have to call out the actual door thickness when you order it. One catch on thick doors: the "R" function is not offered in that configuration. The lock case itself is 3-3/8 x 4-3/16 x 1 inches, so your mortise pocket has to be routed for that.
2) What backset does the BEST 48H mortise deadlock use, and will it drop into an existing mortise prep?
Backset is 2-3/4 inches, the standard commercial mortise backset. The strike side is where the retrofit really gets decided: the 48HS1 flat strike ships standard at 3-1/2 x 1-1/8 x 3/32 inches and fits the frame cut-out specified in ANSI A115.5, while the optional 48HS2 lipped strike measures 4-7/8 x 1-1/4 x 3/32 inches and fits the ANSI A115.1 cut-out. If your frame is already prepped to one of those two standards, you order the matching strike and the frame work is done.
3) Does the BEST 48H deadlock come with a core, or do I have to buy one separately?
It ships SFIC prepped, less core. The 7-pin housing takes all BEST cores, so if your building is already keyed on BEST small format interchangeable core you pull a core from your own stock and drop it in. Buying the lock does not get you a core, and a security screw in the housing stops the core being pulled once it's installed.
4) Is a mortise deadlock like the BEST 48H the right choice, or do I need a full mortise lockset?
The 48H is a deadlock, not a lockset. There is no knob, lever or latch for day-to-day passage, just a keyed deadbolt with a 1 inch stainless steel throw, and the trim is cylinder and trim ring only. Use it where the opening already has a handle or push/pull and you're adding security, or on a door that stays locked. If you need people passing through on a lever with a latch that stays retracted or locked by function, you want a mortise lockset instead: the Corbin Russwin ML2003 covers classroom function, the Cal-Royal NM8080 is a storeroom lockset with an interchangeable core option, and the Cal-Royal NM8050 handles entrance/office.
5) Can one key lock and unlock the BEST 48H from both sides, or is it key outside only?
Single cylinder function. You get a key cylinder on one side; the other side is not keyed. That is the standard arrangement for a storefront or office door where you want to be able to get out without hunting for a key. If your job actually calls for a key on both sides, say an exterior door with glass beside it, look at a double cylinder mortise deadbolt such as the Sargent 4874, which is double cylinder and also runs a 2-3/4 inch backset.
6) What is the closest equivalent to a BEST 48H mortise deadlock from another manufacturer?
The Sargent 4874 is the nearest mortise deadbolt peer, in the 4870 Series with a 2-3/4 inch backset that matches the 48H backset. The difference that decides the order is cylinder count: the BEST 48H covered here is a single cylinder function, keyed outside with a thumbturn inside, while the Sargent 4874 is a double cylinder function, keyed on both faces. If the opening is an egress-path door where a key on the inside is not acceptable, the single cylinder BEST is the one that suits; if the door is a stockroom or a glass-adjacent opening where inside keying is wanted, the 4874 is the swap.
7) What should I use instead of a mortise deadlock if the door also needs a latch and lever?
A deadlock is bolt only, with cylinder and trim ring, so nothing holds the door closed between throws. For an opening that needs both latching and keyed security, the Cal-Royal NM8080 is a heavy duty Grade 1 storeroom mortise lockset with an interchangeable core option for doors 1-3/4 inch thick, and the Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series supplied with an Arcadia lever. Both give a latching lockset in one mortise pocket where the BEST 48H gives a 1 inch deadbolt throw alone.
8) Which mortise deadbolt should I specify if the door needs code entry instead of a key?
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 inch to 1-7/8 inch. It performs the same deadbolt job as the BEST 48H but by keypad code rather than a keyed cylinder. Note the door thickness split before you order: the DL4500 range tops out at 1-7/8 inch, while the 48H is built for 1-3/4 inch doors with a thick door configuration available up to 3 inch, so an unusually thick door stays with the BEST.
9) Do Baldwin 6301 and 6310 mortise lock bodies fit the same door prep as a BEST 48H?
They do not. The Baldwin 6301 entry/apartment and 6310 entry/storeroom mortise lock bodies are 2-1/2 inch backset, and the BEST 48H is 2-3/4 inch backset, so the cylinder and spindle holes fall in different places on the door. Swapping between them means a new door prep or a filler, not a drop-in. Match the backset first when you are replacing an existing mortise case.
10) Do I need to specify handing when ordering a BEST 48H mortise deadlock?
No handing to order. The reversible latch rotates 180 degrees, so handing is changed in the field without opening the case, and the cylinder retainer is non-handed. That matters when you're buying for a building and don't want to inventory left and right versions, or when the door swing on the drawing turns out to be wrong at install.
11) Will the BEST 48H deadbolt reach far enough into my frame for a secure hold?
The bolt is stainless steel with a 1 inch throw, which is a full-length commercial bolt rather than the short throw you see on residential hardware. Paired with the 2-3/4 inch backset and either the ANSI A115.5 flat strike or the ANSI A115.1 lipped strike, it seats into a standard prepped hollow metal frame. On a pair of doors or a wood frame, the gap between door and frame is what decides how much of that 1 inch is actually buried, so measure the gap before you assume full engagement.
12) What finishes does the BEST 48H mortise deadlock come in, and can I match the other doors in my building?
Twelve finishes: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 satin bronze oil-rubbed, 618 bright nickel, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, 626AM satin chrome antimicrobial, and 690 statuary dark bronze. Those are the same finishes offered on the 45H series, so a 48H deadlock ordered in 626 matches 45H locksets already hanging on your other openings. The 626AM antimicrobial option is the one healthcare and food service specifiers usually pull. Faceplate material is brass or bronze, measuring 5-3/8 x 1-3/16 x 7/32 inches.
13) How does the BEST 48H compare to a keypad deadbolt if I don't want to issue keys?
The 48H is a keyed mechanical deadlock on a BEST core, so control of the opening comes from your key system. If you'd rather manage codes than keys, the Alarm Lock DL4500 is a Grade 1 electronic mortise deadbolt holding 2,000 user codes with a privacy keypad, fitting doors 1-5/8 to 1-7/8 inches. Note that thickness range: it does not cover the thick-door territory the 48H reaches up to 3 inches. Keep the 48H where the door is heavier than 1-7/8 inches or where you want no batteries in the opening.
14) Is there a mortise deadbolt that can be released electrically from an access control system?
The Command Access ML190 is a heavy-duty motorized mortise lock with field selectable EL and EU operation on 24VDC, in a storeroom function. The Schlage L9092EU electric lock/unlock outside lever mortise lock is heavy duty, keyed outside with request to exit, on 12/24VDC for 1-3/4 inch doors. Both are wired openings requiring power and raceway to the door. The BEST 48H is a mechanical lock with no electrical requirement, which is the choice when there is no power at the frame.
15) Is there a mortise deadbolt option that does not use a small format interchangeable core?
Yes. The Kaba Ilco 185 Series mortise lock is a deadbolt function and is supplied with no handing, in a single pack. The BEST 48H is prepped SFIC less core, meaning it takes a BEST small format interchangeable core supplied separately and is the right choice for a facility already keyed on SFIC. On a building with no SFIC keying program, the Ilco 185 covers the same deadbolt job without pulling you into a core system.
16) Is a Sargent 130KB or 130W mortise thumbturn a substitute for a BEST 48H deadlock?
No. The Sargent 130KB is a standard duty mortise thumbturn in the 8200 Series and the 130W is a standard duty mortise thumbturn with a round backplate in the 7800 Series. Both are trim pieces that turn a bolt from the inside face; neither is a lock body. The BEST 48H is the mortise lock case itself, heavy duty and keyed single cylinder with a 1 inch stainless deadbolt. If you are replacing a broken inside turn on an existing Sargent case, a thumbturn is what you want; if you are filling an empty mortise pocket, you need the lock body.
17) What mortise lock matches a 2-3/4 inch backset if the opening needs free passage rather than a keyed bolt?
The Hager 3810S is a 3800 Series Grade 1 passage mortise lock with rose and a 2-3/4 inch backset, and the 3810E is the same passage lock with an escutcheon, both for doors 1-3/4 inch to 2-1/2 inch. Both share the 2-3/4 inch backset with the BEST 48H, which keeps the cylinder centerline consistent across a corridor where some doors are secured and some are not. The Hager units are non-keyed passage; the BEST 48H is keyed single cylinder.
18) Which mortise lock gives keyed security plus a deadbolt in a single case?
The Sargent 7925 is a heavy duty Grade 1 dormitory exit function mortise lock in the 7900 Series with rose trim and a single cylinder deadbolt, combining latch, lever trim and bolt in one case. The Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors. The BEST 48H covers the bolt alone with cylinder and trim ring, which is what you want when the door already carries a separate latching lockset and you are adding security above it.
19) Will a Marks USA 21AC or 22AC ornamental iron mortise lock work in place of a BEST 48H?
Not on a standard commercial door. The Marks USA 21AC and 22AC are entrance double cylinder ornamental iron mortise locks with a round knob, both listed for 1 inch door thickness, which is the narrow stile of an iron gate or security door. The BEST 48H is built for 1-3/4 inch doors with a thick door configuration up to 3 inch. Those two ranges do not overlap, so the choice is decided by the door itself before any function question.
20) What is the difference between a BEST 48H and a TownSteel MRX mortise lockset for a behavioral health door?
The TownSteel MRX-A-01 is a passage function stainless steel ligature resistant arch trim mortise lockset and the MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset, both passage function for 1-3/4 inch doors. Their trim geometry is the point, shedding a cord rather than catching it. The Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant in satin stainless steel. The BEST 48H is a keyed deadlock with cylinder and trim ring, so it does not address ligature trim requirements on a patient room door.
21) For a fire rated opening, which mortise lock should I be looking at?
Among the mortise comparables, the Falcon MA101 is a Grade 1 heavy-duty mortise passage lock in the MA Series with field reversible operation and carries a fire rating, and the Schlage Electronics LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 3 hour fire rating. Confirm the assembly listing for the specific door and frame before you commit. The BEST 48H is a heavy duty commercial mortise deadlock with a reversible latch that rotates 180 degrees for handing change without opening the case.
22) Is a Codelocks CL2255 a lighter-duty alternative to a BEST 48H?
The Codelocks CL2255 is an electronic tubular mortise latch in the CL2000 Series in a brushed steel finish, and it is rated medium duty. The BEST 48H is heavy duty with a 0.095 inch cold rolled steel case, cover and armored front. On an interior office or storage door with light traffic and a preference for keyless entry, the CL2255 covers it; on a high-traffic commercial opening the heavier BEST case is the match for the cycle demand.
23) Is the BEST 48H mortise deadlock heavy duty enough for a high traffic commercial door?
It's built for commercial, heavy duty service. The case, cover and armored front are all 0.095 inch cold rolled steel, zinc dichromate plated against corrosion, with four case cover screws (one per corner) and an interlocking armored front and cover at the latch. The hub runs on roller bearings for wear resistance. That construction is aimed at office buildings, schools, healthcare, retail, warehouses and multi-tenant residential rather than a house.
24) Can I tell whether the BEST 48H is locked without trying the door?
The locking toggle carries clear locked and unlocked indication, and there's an optional visual indicator that shows padlock icons. Worth specifying on restrooms, conference rooms or any door where staff need to read the status from across a corridor. If you need a full classroom security indicator on a lockset rather than a deadlock, the Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset for 1-3/4 inch doors.
25) Are Emtek 3102 or 3104 mortise entrance locksets an alternative to a BEST 48H deadlock?
No, those are dummy function. The Emtek 3102 Memphis and 3104 Hamilton mortise entrance locksets are both dummy, as is the 3019 Brisbane brass unit, meaning they are non-operating trim for an inactive leaf. The BEST 48H is a keyed working deadlock with a 1 inch stainless deadbolt throw. If you are dressing the inactive leaf of a pair, the Emtek dummies are correct; if the leaf has to lock, they are not a substitute.
How fast can I get the BEST 48H7L626 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 48H7L626 come with a warranty?
Absolutely. The BEST 48H7L626 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 48H7L626?
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
Why buy the BEST 48H7L626 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!