BEST 45HCA Series NX Exit Func...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$586.00
$363.33
BEST 45HCA Series NX Exit Function Heavy Duty Mortise Lock Case

BEST 45HCA Series NX Exit Function Heavy Duty Mortise Lock Case

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Model: 45HCANX626
$586.00
$363.33
Selected Finish is

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

$586.00
$363.33
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BEST 45HCA Series NX Exit Function Heavy Duty Mortise Lock Case

Professional Grade Mortise Lock Case for Commercial Exit Applications

The BEST 45HCA Series NX Exit Function Heavy Duty Mortise Lock Case delivers commercial-grade security with field reversible operation for versatile installation. This lockbody-only configuration features a 2-3/4" backset and is designed for doors 1-3/4" thick with available thick door configurations up to 5" thick. Constructed from 0.095" cold rolled steel with zinc dichromate plating for corrosion protection, this ANSI A156.13 Grade 1 Operation and Strength rated lock case provides reliable performance in demanding commercial applications.

Professional Features & Benefits

  • Heavy-Duty Steel Construction: 0.095" cold rolled steel case, cover, and armored front with zinc dichromate plating provides exceptional durability and corrosion resistance for commercial applications.
  • Field Reversible Design: Reversible latch rotates 180 degrees for easy handing change without opening case, plus four position hub toggle design for flexible installation requirements.
  • Enhanced Security Features: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for superior strength, plus armored front completely surrounds latch and deadbolt.
  • Precision Engineering: Roller bearing hub mechanism provides smooth, wear resistant operation with precision-engineered latch curve for enhanced cycle life and reduced strike wear.
  • Door Compatibility: Standard configuration for 1-3/4" thick doors with thick door options available up to 5" thick for versatile application requirements.
  • Grade 1 Performance: ANSI A156.13 Series 1000 Grade 1 Operation and Strength rating with Grade 2 Security ensures reliable performance in high-traffic commercial environments.
  • Professional Installation Features: Self-aligning trim mechanism and staked assembly design allows armored front to self-align with door bevel during installation for fast, accurate mounting.
  • Anti-Microbial Options: Available with UltraShield antimicrobial protected coating (626AM and 630AM finishes) for healthcare, education, and food service applications where cleanliness is priority.

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 thick door up to 5"), mortise pocket dimensions, and handing requirements.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper backset alignment.
  3. Prepare door mortise pocket to accommodate case dimensions of 5-7/8" H x 7/8" D x 4-1/16" W and route faceplate opening for 8" H x 1-1/4" W dimensions.
  4. Install lock case in mortise pocket and secure with provided mounting hardware per manufacturer torque specifications, allowing armored front to self-align with door bevel.
  5. Configure four position hub toggle settings and latch direction as needed for specific exit function requirements and door handing.
  6. Test lock case operation to verify proper latch and deadbolt function, smooth hub operation, and proper alignment. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • High-Traffic Exit Doors

Anti-Microbial Protection Option

Available with UltraShield antimicrobial protected coating in 626AM satin chrome and 630AM satin stainless steel finishes. The BEST UltraShield finish inhibits the growth of bacteria and other microbes on the hardware surface, recommended for healthcare, elderly care, education, transportation, food service, and hospitality applications where product cleanliness is a high priority.

Why Choose BEST Quality?

BEST 45HCA Series mortise lock cases deliver professional-grade reliability with 0.095" cold rolled steel construction and precision roller bearing hub mechanisms engineered for demanding commercial applications. ANSI A156.13 Grade 1 Operation and Strength rating with enhanced security features including solid stainless steel anti-friction latch and armored front design ensures dependable performance where 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 Lock Body
Subcategory:
Mortise
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Exit Only
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Exit
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 45HCANX626 – Frequently Asked Questions

1) What does the NX exit function mean on a BEST 45HCA mortise lock case?
NX is exit only. The 45HCA NX lock case is non-keyed, so there is no cylinder operation from the outside and no outside trim function. The inside lever or handle retracts the latch to exit; the outside is fixed. If you need key access from the corridor side, this is the wrong function code and you want a keyed 45H function instead.
2) Does the BEST 45HCA exit mortise lock come with levers, trim, or a strike?
No. The 45HCA NX is a lock case only, the mortise body itself. Levers, roses or escutcheons, and the strike package are ordered separately. A 7/8 inch lip-to-center strike can be added as an option, and you can also specify security head screws when you order.
3) Will the BEST 45HCA fit a 1-3/4 inch commercial door, and what about thicker doors?
The standard 45HCA configuration is built for 1-3/4 inch doors, which is the usual commercial thickness. For anything thicker, BEST builds a thick door configuration up to 5 inches, but the thickness has to be specified at time of order. It is not something you adjust in the field.
4) Does the 45HCA mortise lock need a 2-3/4 inch backset mortise pocket?
Yes, the backset is 2-3/4 inches, which is the standard mortise backset on commercial openings. The case itself measures 5-7/8 H x 7/8 D x 4-1/16 W, and the faceplate cutout is 8 inches by 1-1/4 inches with a 1/16 inch thick plate. If your existing pocket was routed for a standard ANSI mortise prep at that backset, the case drops in.
5) Do I have to order the 45HCA handed, or can I change the hand on site?
Handing is a required selection when ordering (RH, LH, RHRB, or LHRB), but the lock is field reversible. The latch rotates 180 degrees to change hand without opening the case, and the hub uses a four position toggle. So a hand specified wrong is recoverable on the jobsite rather than a return.
6) Will the BEST 45HCA latch into my existing mortise strike?
The latchbolt is solid stainless with a 3/4 inch throw and the deadbolt throws 1 inch, both standard for an ANSI mortise strike prep at a 2-3/4 inch backset. Where the frame lip depth is the issue, you can add the 7/8 inch lip-to-center strike option instead of reworking the frame.
7) Is the BEST 45H mortise lock Grade 1, and does it meet Grade 1 security?
The 45H Series is rated ANSI A156.13, Series 1000, Grade 1 for Operation and Strength, with Grade 2 Security. To reach Grade 1 Security you need a drill resistant core (1CD, 1CDP, 1CDF or 1CDX) with escutcheon trim, or the 1EK7K4 high security cylinder with sectional trim. If your spec calls for Grade 1 across the board including security, the 47H Series carries Grade 1 Operational, Strength and Security as built.
8) What cylinder prep does the BEST 45HCA exit lock case come with?
It is prepped for a BEST small format interchangeable core and ships less core. On the NX exit function the lock is non-keyed in operation, so if your facility standardizes on SFIC across doors, the prep is there and the core is bought separately to your keyway.
9) Which finish should I pick for a hospital or school door on the BEST 45HCA?
For healthcare, elderly care, education, transportation, food service and hospitality, BEST offers the UltraShield antimicrobial coating in 626AM satin chrome and 630AM satin stainless steel, which inhibits growth of bacteria and other microbes on the hardware surface. Otherwise there are 13 standard finishes including 605 bright brass, 612 satin bronze, 622 matte black, 626 satin chrome, 630 satin stainless and 690 dark bronze, so matching the rest of an existing opening set is straightforward.
10) Is the BEST 45HCA an electrified lock?
No, the 45HCA NX is a purely mechanical lock case with no electrical option on it. There is nothing to wire, no power transfer required, and it behaves identically whether the building has power or not. If you need access control at the opening, this body is not the part to spec.
11) Will the 45HCA hold up on a high traffic exit door in an apartment building or warehouse?
It is a heavy duty commercial lock case: 0.095 inch cold rolled steel case, cover and armored front, zinc dichromate plated against corrosion, with a roller bearing hub for wear resistance. The one-piece stainless anti-friction latch is described as giving 50 percent more surface contact with the strike, and the armored front wraps both the latch and the deadbolt. That is the construction property managers standardize on for stairwell and service exits.
12) Do I need to route the door differently for the faceplate bevel on a BEST mortise lock?
No separate bevel work is needed. The armored front self-aligns with the door bevel during installation thanks to the staked assembly and self-aligning trim mechanism, so you route the faceplate opening at 8 inches by 1-1/4 inches and the face sets itself square to the edge.
How fast can I get the BEST 45HCANX626 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 45HCANX626 come with a warranty?
Absolutely. The BEST 45HCANX626 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 45HCANX626?
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 45HCANX626 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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