BEST 45H Series Heavy Duty Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,267.00
$784.44
BEST BEST 45H Series (NX - Exit Function) - Escutcheon Trim Heavy Duty Mortise Lock, Non-Keyed BES-45H-NX-ES

BEST 45H Series Heavy Duty Mortise Lock with Escutcheon Trim - NX Exit Function Non-Keyed

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Model: 45H0NX3J626
$1,267.00
$784.44
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,267.00
$784.44
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BEST 45H Series Heavy Duty Mortise Lock with Escutcheon Trim - NX Exit Function Non-Keyed

Professional Grade Mortise Lock Solution

The BEST 45H Series Heavy Duty Mortise Lock delivers commercial-grade security with NX exit function operation and escutcheon trim design. Engineered with a solid one-piece stainless steel anti-friction latch providing 50% more surface contact with strike, this non-keyed mortise lock features a 2-3/4" backset and is designed for doors 1-3/4" thick. The lock meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength standards with Grade 2 Security rating for demanding commercial applications.

Professional Features & Benefits

  • Enhanced Latch Design: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for superior strength and security with precision-engineered curve for enhanced cycle life.
  • Heavy-Duty Construction: Case, cover, and armored front manufactured from 0.095" cold rolled steel with zinc dichromate plating for exceptional durability and corrosion protection.
  • Reversible Operation: Latch rotates 180 degrees for easy handing change without opening case, with non-handed cylinder retainer and auxiliary bolt for installation flexibility.
  • Roller Bearing Mechanism: Roller bearing hub mechanism provides smooth, wear-resistant operation with lever return spring mechanism in trim for enhanced protection against lever droop.
  • Armored Front Protection: Completely surrounds latch and deadbolt providing increased lateral strength with staked assembly design for self-alignment during installation.
  • Grade 1 Performance: ANSI A156.13 Series 1000 Grade 1 Operation and Strength, Grade 2 Security rating with ANSI A117.1 section 404.2.6 compliance for accessibility requirements.
  • Self-Aligning Installation: Self-aligning trim mechanism and faceplate automatically adjusts to proper bevel during installation for fast, accurate mounting.
  • Anti-Microbial Options: Available with UltraShield antimicrobial protected coating (626AM and 630AM finishes) for healthcare and high-cleanliness applications.

Technical Specifications

45H Series –The design and operation of the BEST® mortise lock meets the intent
of the standard for ANSI A117.1 section 404.2.6.
Builders Hardware Manufacturers Association:
45H Series –ANSI A156.13, Series 1000, Grade 1 Operation and Strength, Grade 2 Security. To meet Grade 1 Security, a drill resistant core
(1CD, 1CDP, 1CDF, or 1CDX) must be used with escutcheon trims, and 1EK7K4 high security cylinder must be used with sectional trims.
47H Series – ANSI A156.13, Series 1000, Grade 1 Operational, Strength, and Security

Auxiliary bolt – Stainless steel, non-handed.
Backset – 2-3/4"
Case –0.095” cold rolled steel, 5- 7/8" H x 7/8" D x 4-1/16" W. Steel is zinc dichromate plated for corrosion protection.
Deadbolt – Stainless steel, 1" throw.
Latchbolt –Solid stainless steel, 3/4" throw. Latch is oil-impregnated for anti-friction operation. Reversible without opening case.
Strike – For complete strike package spec’s see page 5.
Door Thickness – Standard lock configuration designed for doors 1-3/4" thick. Thick door configuration available for doors up to
5" thick (specify thickness when ordering).
Faceplate –Stainless steel, brass or bronze material, 8" H x 1-1/4" W x 1/16" T. Lock face automatically adjusts to proper bevel during
installation.
Products protected by one or more of the following patents: 4,873,853 5,590,555 5,794,472
Finishes –
• 605 - bright brass, clear coated
• 606 – satin brass, clear coated
• 611 – bright bronze, clear coated
• 612 – satin bronze, clear coated
• 613* – oxidized satin bronze, oil rubbed
• 618 – bright nickel plated, clear coated (brass base material)
• 619 – satin nickel plated, clear coated (brass base material)
• 622 – flat black coated (brass base material) 625 – brightchromium plated (brass base material)
• 626 – satin chromium plated (brass base material)
• 629 – bright stainless steel
• 630 – satin stainless steel
• 690* – dark bronze coated (brass base material)
*613 finish is designed to wear over time, providing an “antique” appearance.
*690 finish will continue as a dark brown appearance over time.
Antimicrobial Finish –
• 626AM – satin chrome plated with UltraShield™ antimicrobial protected coating
• 630AM – satin stainless steel with UltraShield™ antimicrobial protected coating
The BEST UltraShield finish inhibits the growth of bacteria and other microbes on the surface of the hardware.
NOTE: BEST UltraShieldTM option is recommended for use on any hardware application where product cleanliness is a high priority. i.e;.
Hospital/Healthcare, Elderly Care, Education, Transportation, Food-Service, Hospitality.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness (standard 1-3/4" or up to 5" thick door configuration), 2-3/4" backset, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation 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 45H Series mortise locks deliver professional-grade reliability with 0.095" cold rolled steel construction and solid stainless steel components rated for demanding commercial applications. The precision-engineered anti-friction latch design provides enhanced cycle life with reduced wear, while the roller bearing hub mechanism ensures smooth, long-lasting operation. Engineered for commercial environments where dependable security and durability are essential.

Product Specs

Series:
45H
Standard Cylinder:
SFIC Prep Less Core
Duty Level:
Heavy Duty
Keyed Function:
Non-Keyed
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Mortise
Keyed:
No
Commercial/Residential:
Commercial
Lock Type:
Mortise
Product Attribute:
Mortise Locks
Electronic:
No
Face Plate:
8" H x 1-1/4" W x 1/16" T
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

BEST 45H0NX3J626 – Frequently Asked Questions

1) Will the BEST 45H mortise lock fit a door thicker than 1-3/4 inches?
The standard 45H configuration is built for 1-3/4 inch doors. BEST does offer a thick door configuration for doors up to 5 inches, but the thickness has to be specified at time of order, so it is not something you can adapt after the lock ships. Backset is 2-3/4 inches either way.
2) What does the NX exit function do on a BEST 45H mortise lock?
NX is a non-keyed exit function. There is no cylinder on this configuration, so it is not used where you need key control on the outside. It is an egress-side lock: the inside lever retracts the latch to exit. If you need keyed control of the opening, you want a keyed 45H function instead.
3) Does the BEST 45H come handed, or can it be reversed in the field?
Handing is not a purchasing decision here. The stainless latch rotates 180 degrees to change hand without opening the case, and both the auxiliary bolt and the cylinder retainer are non-handed. You can set the hand at the door.
4) Is the BEST 45H Grade 1, and does it meet accessibility requirements?
The 45H carries ANSI A156.13 Series 1000, Grade 1 Operation and Strength with a Grade 2 Security rating. Its design and operation meet the intent of ANSI A117.1 section 404.2.6 for accessibility. For a Grade 1 Security rating with escutcheon trim, a drill resistant core (1CD, 1CDP, 1CDF or 1CDX) is required, or step up to the 47H Series, which is Grade 1 for Operational, Strength and Security.
5) What do I have to specify when ordering a BEST 45H with escutcheon trim?
Three choices plus door thickness. Trim style is J wrought escutcheon, M forged escutcheon, or N forged escutcheon with concealed cylinder. Lever or knob style covers 12 solid tube no return, 3 solid tube with return, 4 round knob, contour with angle return, curved with return, curved without return, and gull wing. Finish runs from 605 bright brass through 630 satin stainless, including 622 matte black and 690 dark bronze. Call out thick door if the door exceeds 1-3/4 inches.
6) Is there a simpler non-keyed mortise lock than the BEST 45H NX for an opening that only needs free passage?
Yes. The BEST 45H NX is a heavy duty non-keyed mortise lock with a deadbolt in the case and escutcheon trim. If the door only needs latching with no deadbolt, the Schlage PM010 is a Grade 1 passage latch mortise lock, non-keyed, for 1-3/4 inch doors, and the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating. The Hager 3810E is a Grade 1 passage mortise lock with escutcheon and a 2-3/4 inch backset, matching the 45H backset, for doors 1-3/4 to 2-1/2 inch.
7) What is the closest alternative to the BEST 45H NX exit function mortise lock if the opening needs a keyed cylinder outside?
The BEST 45H NX is a non-keyed mortise lock with SFIC prep less core, so the outside lever is not key controlled. Where the opening needs a keyed function in a mortise case, the Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset with an interchangeable core option for doors 1-3/4 inch thick. The Corbin Russwin ML2003 covers keyed classroom function at Grade 1 on 1-3/4 inch doors.
8) Which mortise lock gives the same exit-style operation as a BEST 45H NX but with a deadbolt for dormitory doors?
The BEST 45H NX is a non-keyed exit function lock with a 1 inch throw deadbolt in the case and a 3/4 inch stainless latchbolt. For a corridor or dormitory opening where the deadbolt is thrown by a cylinder, the Sargent 7925 is a Grade 1 heavy duty corridor/dormitory exit function mortise lock in the 7900 Series with rose trim and a single cylinder deadbolt. Note the trim difference: the 45H NX uses escutcheon trim, while the 7925 is a rose trim lock.
9) What should I use instead of the BEST 45H NX on a bathroom or bedroom door that needs privacy locking?
The 45H NX is an exit function, non-keyed lock and does not provide inside privacy locking. For privacy openings, 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 with a 2-3/4 inch backset for doors 1-3/4 to 2 inch, which matches the 2-3/4 inch backset prep the 45H uses.
10) What looks like a substitute for a BEST 45H NX mortise lock but is not one?
Several mortise-family items share the word mortise without being a working lockset. The Schlage L0170 is half dummy trim, a Grade 1 non-keyed lever with no latch mechanism, and the Emtek 3102 Memphis is a dummy mortise entrance lockset. The Sargent 130KB and 130W are mortise thumbturns only. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset and no latch or lever. None of those operate a latchbolt, while the 45H NX has a 3/4 inch throw stainless latchbolt with lever trim.
11) For a behavioral health room, is the BEST 45H NX the right mortise lock or is there a better choice?
The 45H NX is a heavy duty commercial mortise lock with lever and knob trim options including curved levers and a gull wing lever, which is not an anti-ligature design. For ligature-resistant openings, the TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, the MRX-A-01 uses ligature resistant arch trim in the same function, and 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.
12) For a classroom door, what is the alternative to the BEST 45H NX exit function?
The 45H NX is exit function and non-keyed, so it does not provide classroom control. The Cal-Royal NM8070 is a Grade 1 heavy duty classroom mortise lockset with auxiliary deadlatch for 1-3/4 inch doors, the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset for 1-3/4 inch doors, and the Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset with ANSI strike and a steel escutcheon measuring 8-1/2 inch by 2-3/4 inch by 7/16 inch for 1-3/4 inch doors.
13) Which BEST 45H finish should a hospital or school specify?
For openings where cleanliness matters, BEST offers 626AM satin chrome and 630AM satin stainless, both with the UltraShield antimicrobial protected coating that inhibits growth of bacteria and other microbes on the hardware surface. BEST recommends it for hospital and elderly care, education, transportation, food service and hospitality. Standard 626 and 630 are the same appearance without the coating.
14) Does the BEST 45H NX come with a core, and what cylinder does it take?
The 45H is prepped for a BEST small format interchangeable core and ships less core, so the core is ordered separately and keyed to your system. On the NX exit function specifically there is no keyed outside control, since this configuration is non-keyed.
15) If I need a keyed or electrified mortise lock instead of the non-keyed BEST 45H, what else is available?
For a keyed mechanical function, the Corbin Russwin ML2003 is a Grade 1 classroom mortise for 1-3/4 inch doors, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise with an interchangeable core option. If the opening needs access control, the Command Access ML190 Series is a motorized mortise with field selectable EL/EU operation on 24VDC, and the Schlage CO-100 is a standalone electronic mortise for 1-3/4 inch doors. The 45H NX itself is purely mechanical and non-electronic.
16) Can an electronic mortise lock replace a BEST 45H NX in the same door prep?
Electronic mortise locks are a different scope of work than the 45H NX, which is a non-electronic mechanical lock. If access control is the goal, the Schlage CO-100 is a Grade 1 heavy duty standalone electronic mortise lock with keypad reader for 1-3/4 inch doors, and the TownSteel FME-2000 is a Grade 1 heavy duty mortise lockset with RFID for 1-3/4 inch doors. The Alarm Lock DL3500CR is a Grade 1 electronic mortise lock with classroom function, but it is specified for doors 1-5/8 to 1-7/8 inch, so confirm door thickness before swapping.
17) If the door is thinner than 1-3/4 inch, what mortise lock works where the BEST 45H NX does not?
The 45H standard configuration is built for 1-3/4 inch doors. For thinner or narrow-stile openings, the Baldwin 6310 mortise lock body has a 2-1/2 inch backset and covers doors 1-3/8 inch and over in entrance/storeroom function, and the Marks USA 21AC entrance double cylinder ornamental iron mortise lock is specified for 1 inch doors. Both use a different backset or door prep than the 45H 2-3/4 inch backset, so the door must be prepped accordingly.
18) Is a cylindrical lock an acceptable swap for a BEST 45H NX?
Only if the door is prepped for it. The 45H NX is a mortise lock requiring a pocket in the door edge, with an 8 inch by 1-1/4 inch faceplate. The Schlage PC10 is a Grade 1 passage cylindrical lock, non-keyed with rose, for 1-3/4 inch doors; it needs a bored cylindrical prep rather than a mortise pocket, so it is not a drop-in for a mortised door without a filler or door replacement.
19) What makes the BEST 45H latch different from a standard mortise latch?
It is a solid one-piece stainless steel anti-friction latch, oil-impregnated, with roughly 50 percent more surface contact with the strike than a conventional latch and a precision curve aimed at cycle life. Case, cover and armored front are 0.095 inch cold rolled steel with zinc dichromate plating, and the armored front wraps both latch and deadbolt for lateral strength. Hub runs on roller bearings, with a lever return spring in the trim to fight lever droop.
20) Can I match BEST 45H escutcheon trim to lockets already installed on other doors in my building?
Yes, within the 45H range. Fourteen finishes are offered, from 605 bright brass and 606 satin brass through 611 and 612 bronze, 613 oil-rubbed bronze, 618 and 619 nickel, 622 matte black, 625 and 626 chrome, 629 and 630 stainless, plus 690 dark bronze. Two notes on the aging finishes: 613 is meant to wear to an antique look over time, and 690 keeps a dark brown appearance. Escutcheon style can be matched as J wrought, M forged, or N forged with concealed cylinder.
How fast can I get the BEST 45H0NX3J626 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 45H0NX3J626 come with a warranty?
Absolutely. The BEST 45H0NX3J626 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 45H0NX3J626?
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 45H0NX3J626 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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