BEST 45H Series Heavy Duty Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$584.00
$404.59
BEST 45H Series Heavy Duty Mortise Lock Body with Office Function and Field Reversible Design

BEST 45H Series Heavy Duty Mortise Lock Body with Office Function and Field Reversible Design

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Model: 45HCAAB626
$584.00
$404.59
Selected Finish is

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

$584.00
$404.59
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BEST 45H Series Heavy Duty Mortise Lock Body with Office Function and Field Reversible Design

Professional Grade Mortise Lock Solution for Commercial Applications

The BEST 45H Series mortise lock body delivers heavy-duty performance with office function operation and field reversible design. This lockbody-only unit features a 2-3/4" backset, 1" deadbolt throw, and 3/4" latchbolt throw for comprehensive security. Constructed from 0.095" cold rolled steel with stainless steel components, this ANSI A156.13 Grade 1 Operation and Strength rated lock provides reliable performance for demanding commercial environments.

Professional Features & Benefits

  • Heavy-Duty Steel Construction: 0.095" cold rolled steel case, cover, and armored front provide exceptional strength and durability for high-traffic commercial applications.
  • Field Reversible Design: Reversible latch rotates 180 degrees for easy handing change without opening the case, reducing installation time and inventory requirements.
  • Enhanced Security Features: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for superior strength and security performance.
  • Roller Bearing Hub Mechanism: Provides smooth, wear-resistant operation with enhanced cycle life and reduced maintenance requirements.
  • Armored Front Protection: Completely surrounds latch and deadbolt providing increased lateral strength with self-aligning installation capability.
  • ANSI Grade 1 Performance: Meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength requirements for commercial-grade reliability.
  • Comprehensive Bolt Configuration: 1" throw stainless steel deadbolt and 3/4" throw solid stainless steel latchbolt for complete security coverage.
  • Anti-Microbial Finish Options: Available with UltraShield antimicrobial protected coating (626AM, 630AM) 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 thick door configuration 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 for faceplate installation.
  4. Install lockbody into mortise pocket and secure with appropriate fasteners per manufacturer torque specifications.
  5. Adjust latch and deadbolt operation for proper alignment with strike, utilizing the field reversible design as needed for door handing.
  6. Test lock operation to verify proper function of office function operation, latch engagement, and deadbolt extension. 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 stainless steel bolt components engineered for demanding commercial applications. The roller bearing hub mechanism and armored front design provide enhanced durability and smooth operation. ANSI A156.13 Grade 1 certification ensures dependable performance where security and reliability are essential.

Product Specs

Series:
45H
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 Lock Body
Subcategory:
Mortise
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Office
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Entrance/Office
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 45HCAAB626 – Frequently Asked Questions

1) Does the BEST 45H office function mortise lock come with trim, levers, or a cylinder core?
No. The 45HCA office function unit is a lockbody only. It ships with SFIC prep but less core, so you add the small format interchangeable core yourself, and you order the lever or knob trim, roses or escutcheons separately. Budget for trim, a core, and the strike when you price the opening.
2) What does the office function do on a BEST 45H mortise lock?
Office function means the outside lever is locked or unlocked by key, and the inside lever always retracts the latch for free egress. It is a single cylinder, keyed lock. The 45H also carries a deadbolt with a 1 inch throw, so an occupant can secure the room beyond the latch when needed.
3) Do I have to order the BEST 45H mortise lock handed?
Handing is specified at order (RH, LH, RHRB or LHRB), but the latch is field reversible. The latchbolt rotates 180 degrees without opening the case, so if the opening turns out opposite to what was called out, you can flip it on the door instead of swapping the lock. That is why a fleet of these across a building can be stocked as a single spare.
4) What mortise pocket and edge prep does the BEST 45H need?
Route a pocket for a case measuring 5-7/8 H x 7/8 D x 4-1/16 W inches, with the backset at 2-3/4 inches. The faceplate cutout is 8 x 1-1/4 x 1/16 inches. The lock face self-adjusts to the door bevel during installation, so you are not shimming for a beveled edge.
5) Will the BEST 45H latch into the strike already in my frame?
The latchbolt throws 3/4 inch and the deadbolt throws 1 inch, both stainless steel, on a 2-3/4 inch backset. An existing ANSI mortise strike prep with adequate deadbolt pocket depth will normally take it, but the lip projection matters: a 7/8 inch lip to center strike is offered as an ordering option if your frame is set back from the door face.
6) Is the BEST 45H Grade 1, and does it meet Grade 1 security?
It is rated to ANSI A156.13, Series 1000, Grade 1 for Operation and Strength, but Grade 2 for Security as standard. To reach Grade 1 Security you need a drill resistant core (1CD, 1CDP, 1CDF or 1CDX) with escutcheon trim, or a 1EK7K4 high security cylinder with sectional trim. If your spec demands Grade 1 across all three categories out of the box, the 47H Series is the one that carries it.
7) Does the BEST 45H accept standard BEST small format interchangeable cores for our existing master key system?
Yes. The lock is supplied with SFIC prep, less core, which means it takes a small format interchangeable core keyed into whatever BEST system your facility already runs. That is the point of specifying it this way: the locksmith drops in a core from the existing keying without rekeying the lock body.
8) Which finish should I pick for a hospital or clinic corridor door?
Two antimicrobial options are offered: 626AM satin chrome and 630AM satin stainless, both with the UltraShield coating that inhibits bacterial growth on the hardware surface. BEST calls these out for healthcare, elderly care, education, food service and hospitality. For a standard corridor where cleanliness is not the driver, plain 626 or 630 is the common institutional choice.
9) What else do I have to specify when ordering a BEST 45H office function lockbody?
Four things beyond finish: handing (RH, LH, RHRB or LHRB), whether you want security head screws, whether you need the 7/8 inch lip to center strike, and the door thickness if it is anything other than standard 1-3/4 inch. Trim and the core are separate line items.
10) Is the BEST 45H tough enough for a high traffic school or apartment entrance?
It is built for that duty. The case, cover and armored front are 0.095 inch cold rolled steel, zinc dichromate plated against corrosion, with a roller bearing hub for cycle life and a one-piece stainless anti-friction latch. The armored front wraps both latch and deadbolt for lateral strength. It is a commercial, heavy duty lock, not a residential one.
11) Is the BEST 45H an electrified or access control lock?
No, the 45H office function body is purely mechanical, key operated with a single cylinder. There is no electrification on it, so if the opening needs a card reader, remote release or fail safe operation on power loss, this is the wrong body and you need an electrified mortise lock instead.
12) Does the BEST 45H meet accessibility requirements for lever operation?
BEST states the design and operation of the 45H mortise lock meets the intent of ANSI A117.1 section 404.2.6. The lock body itself is only half of that, though: accessible operation depends on pairing it with lever trim rather than knobs, since the lever is what satisfies the no tight grasping requirement.
13) What finishes can I get the BEST 45H mortise lock in to match the rest of my building?
Fifteen finish choices, covering brass (605 bright, 606 satin), bronze (611 bright, 612 satin, 613 oil rubbed, 690 dark bronze), nickel (618 bright, 619 satin), black (622), chrome (625 bright, 626 satin, 626AM), and stainless (629 bright, 630 satin, 630AM). Note that 613 is meant to wear to an antique look over time, so it will not stay uniform against newer hardware, while 690 holds its dark brown appearance.
How fast can I get the BEST 45HCAAB626 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 45HCAAB626 come with a warranty?
Absolutely. The BEST 45HCAAB626 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 45HCAAB626?
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 45HCAAB626 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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