BEST 48H Series Mortise Deadlo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$661.00
$392.92
BEST BEST 48H Standard Series Mortise Deadlock (M-Double Cylinder Function) 7-Pin Housing, Accepts all BEST Cores BES-48H-M

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

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Model: 48H7M626
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$661.00
$392.92
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BEST 48H Series Mortise Deadlock with Double Cylinder Function and 7-Pin Housing

Heavy-Duty Commercial Mortise Lock Solution

The BEST 48H Series Mortise Deadlock delivers professional-grade security with double cylinder function and 7-pin housing designed to accept all BEST interchangeable cores. This heavy-duty mortise 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". The lock accommodates standard 1-3/4" thick doors with thick door configurations available up to 3" for versatile 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 demanding commercial environments.
  • Enhanced Security Design: Solid one-piece stainless steel anti-friction latch offers 50% more surface contact with strike for superior strength and security performance.
  • Precision Engineering: Roller bearing hub mechanism ensures smooth, wear-resistant operation with enhanced cycle life and reduced strike wear.
  • Versatile Core Compatibility: 7-pin housing accepts all BEST interchangeable cores with solid machined cylinder rings and security screw protection against cylinder removal.
  • Field Reversible Operation: Non-handed design with reversible latch that rotates 180 degrees allows easy handing changes without opening the case.
  • Professional Installation Features: Self-aligning trim mechanism and armored front design enable fast, accurate installation with automatic door bevel alignment.
  • Enhanced Case Integrity: Four corner case cover screws plus interlocking armored front and cover design at the latch provide superior structural strength.
  • Visual Lock Status Indication: Clear "locked" and "unlocked" state indicators with optional padlock icon display for immediate status recognition.

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 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 dimensions.
  3. Prepare door and frame by cutting mortise pocket and drilling required holes per manufacturer specifications, ensuring proper clearance for the 1" deadbolt throw.
  4. Install the mortise case, armored front, and all mounting hardware, securing the device to door per manufacturer torque specifications with 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 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

  • 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 roller bearing hub mechanisms ensure smooth, wear-resistant operation. Engineered for demanding commercial applications where dependable security performance is essential.

Product Specs

Series:
48H
Standard Cylinder:
SFIC Prep Less Core
Duty Level:
Heavy Duty
Keyed Function:
Double 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 48H7M626 – Frequently Asked Questions

1) What is the Best 48H Standard Series mortise deadlock used for?
The Best 48H provides high-security deadlocking in commercial and institutional applications. Double cylinder function requires key operation from both sides. Common in office buildings, schools, and secure facilities where controlled access is critical.
2) What door thickness does this mortise lock fit?
Standard mortise locks typically fit 1-3/4" doors. Verify your door thickness and mortise pocket dimensions before ordering. Check manufacturer template for exact cutout specifications.
3) How do I determine left or right hand for installation?
Stand on the side where the door opens toward you. If hinges are on your right, it's right hand. If hinges are on your left, it's left hand. Most mortise locks are field reversible.
4) What finishes are available for the Best 48H series?
Best offers multiple finishes including satin chrome, bright brass, and oil rubbed bronze. Finish availability varies by model. Contact us to confirm specific finish options for this lock body.
5) What security grade does this lock meet?
Best Standard Series locks are designed for commercial duty. The 7-pin housing provides enhanced security over standard 5-pin systems. Verify specific ANSI grade requirements for your application.
6) Does this lock meet fire door code requirements?
Double cylinder locks may not be suitable for fire egress doors due to code restrictions. Check local fire codes and AHJ requirements. Consider single cylinder or classroom function for fire-rated openings.
7) What cylinders and cores work with this housing?
Accepts all Best interchangeable cores and standard mortise cylinders. The 7-pin housing accommodates extended pin configurations. Browse our Best lock cylinders and cores for compatible options.
8) What tools do I need for installation?
Installation requires mortise lock jig, hole saw, chisel set, and drill bits. Follow manufacturer template precisely. Pre-existing mortise pockets may need adjustment for proper fit.
9) How do I adjust the latch and deadbolt?
Most adjustments involve strike plate alignment and latch projection. Deadbolt throw should extend fully into strike. Lubricate mechanism with graphite, never oil-based lubricants.
10) Are there other Best 48 series functions available?
Best offers multiple functions in the 48 series including classroom, storeroom, and passage functions. Each serves different security and access needs. Check our door hardware selection for alternatives.
11) Will this work in high-traffic environments?
Best Standard Series handles moderate to heavy commercial use. For extreme high-traffic applications, consider Best's heavy-duty series. Regular maintenance extends service life in demanding conditions.
12) What are the key measurements I need to verify?
Measure door thickness, backset distance, mortise pocket depth and width. Standard backset is 2-3/4". Verify strike plate alignment and door frame clearances before installation.
How fast can I get the BEST 48H7M626 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 48H7M626 come with a warranty?
Absolutely. The BEST 48H7M626 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 48H7M626?
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 48H7M626 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.
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