BEST 45HCA Series Heavy Duty M...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$597.00
$369.44
BEST BEST 45HCA Series (CHB - Holdback Function) - Heavy Duty Mortise Lockbody Only, Field Reversible 45HCACHB

BEST 45HCA Series Heavy Duty Mortise Lockbody with Holdback Function - Field Reversible

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Model: 45HCACHB626
$597.00
$369.44
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$597.00
$369.44
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BEST 45HCA Series Heavy Duty Mortise Lockbody with Holdback Function - Field Reversible

Professional Grade Mortise Lock Solution for Commercial Applications

The BEST 45HCA Series represents heavy-duty mortise lock engineering designed for demanding commercial environments. This field-reversible lockbody features a 2-3/4" backset with solid stainless steel components and Grade 1 operational strength per ANSI A156.13 standards. The case construction utilizes 0.095" cold rolled steel measuring 5-7/8" H x 7/8" D x 4-1/16" W for exceptional durability in high-traffic applications.

Professional Features & Benefits

  • Heavy-Duty Case Construction: 0.095" cold rolled steel case with zinc dichromate plating provides superior corrosion protection and structural integrity for commercial applications.
  • Enhanced Latch Design: Solid one-piece stainless steel anti-friction latch delivers 50% more surface contact with strike for superior strength and security with precision-engineered curve for extended cycle life.
  • Field-Reversible Operation: Reversible latch rotates 180 degrees for easy handing change without opening case, plus four-position hub toggle design for flexible configuration.
  • 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 certification with Grade 2 Security for professional reliability.
  • Advanced Security Features: Solid machined cylinder rings with wavy washer provides wrenching resistance, plus cylinder security screw prevents core removal.
  • Roller Bearing Mechanism: Smooth, wear-resistant operation with lever return spring mechanism in trim for enhanced protection against lever droop.
  • Antimicrobial 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 with appropriate clearances for installation.
  4. Install lockbody into mortise pocket and secure with four case cover screws at each corner for enhanced case integrity.
  5. Configure four-position hub toggle to determine locked/unlocked operation for each hub based on application requirements.
  6. Test latch and deadbolt operation to verify proper alignment, smooth function, and complete 3/4" latch throw and 1" deadbolt throw. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • High-Security Commercial Environments

Why Choose BEST Quality?

BEST 45HCA Series mortise locks deliver professional-grade reliability with 0.095" cold rolled steel construction and solid stainless steel components engineered for demanding commercial applications. The Grade 1 operational strength certification and enhanced case integrity design with four corner screws plus interlocking armored front ensure dependable performance in high-traffic environments. Multiple finish options including antimicrobial coatings provide versatility for specialized applications where cleanliness is a priority.

Product Specs

Series:
45H
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 Lock Body
Subcategory:
Mortise
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Holdback
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Holdback
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 45HCACHB626 – Frequently Asked Questions

1) Will the BEST 45HCA mortise lock fit a 1-3/4 inch door?
Yes. The standard 45HCA lockbody configuration is built for 1-3/4 inch doors, which is the usual commercial thickness. For anything thicker, BEST builds a thick door configuration covering doors up to 5 inches, and you have to state the actual door thickness when you order it. The mortise pocket needs to take a case measuring 5-7/8 H x 7/8 D x 4-1/16 W inches, and the faceplate is 8 x 1-1/4 x 1/16 inches.
2) What does the holdback function on a BEST 45HCA mortise lock actually do?
Holdback means the latchbolt can be held retracted so the door stays free-swinging, then released back to normal latching when you want the opening secured again. It is a double cylinder keyed lock, so it is keyed on both sides rather than keyed one side and thumbturn. Typical use is a door you want open during business hours and latched after.
3) Do I have to order the BEST 45HCA by hand, or can I change handing on site?
You pick a hand on the order (RH, LH, RHRB or LHRB), but the lock is field reversible. The latchbolt rotates 180 degrees to change hand without opening the case, and the auxiliary bolt is non-handed. So a wrong-hand call on the jobsite is a five minute fix, not a return.
4) Will the 45HCA latch into the strike I already have in the frame?
The 45HCA runs a 2-3/4 inch backset with a 3/4 inch latchbolt throw and a 1 inch deadbolt throw, which is the standard commercial mortise prep. If your existing frame strike is cut for a standard ANSI mortise lock at that backset, it lines up. Where lip projection is the issue, the 7/8 inch lip-to-center strike can be specified with the lock instead of reusing the old one.
5) Does the BEST 45HCA lockbody come with a core and trim, or do I need to buy those separately?
This is the lockbody only. It ships prepped for a BEST small format interchangeable core but less core, so you supply the SFIC core keyed to your system, and you order lever or knob trim and escutcheons separately.
6) Is the BEST 45H series Grade 1, and what do I need to hit Grade 1 security?
The 45H carries ANSI A156.13 Series 1000, Grade 1 Operation and Strength, with Grade 2 Security as supplied. 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 operation, strength and security without those additions, the 47H series is the one that carries all three.
7) Which finish should I order for a hospital or clinic door?
For healthcare, BEST offers two UltraShield antimicrobial coated finishes on the 45HCA: 626AM satin chrome and 630AM satin stainless steel. The coating inhibits growth of bacteria and other microbes on the hardware surface, and BEST calls it out for hospital, elderly care, education, transportation, food service and hospitality. Standard 626 and 630 are the same appearance without the coating.
8) Is the BEST 45HCA suitable for a high traffic commercial opening, or is it an interior residential lock?
It is a heavy duty commercial mortise lock, not a residential product. The case is 0.095 inch cold rolled steel with zinc dichromate plating for corrosion protection, the latchbolt and deadbolt are solid stainless, and the armored front wraps both bolts for lateral strength. Roller bearing mechanism and a lever return spring in the trim handle the cycle count on schools, offices and multi-tenant buildings.
9) What do I need to decide before placing the order on a BEST 45HCA lockbody?
Four things beyond finish: the hand (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 over 1-3/4 inches. Then plan on a separate SFIC core and separate trim, since this is the lock body on its own.
10) Does the BEST 45HCA meet accessibility requirements for an ADA opening?
BEST states the design and operation of the 45H mortise lock meets the intent of ANSI A117.1 section 404.2.6, the accessible door hardware provision. Bear in mind the operable part is the trim, which you order separately, so specify lever trim rather than a knob for an accessible opening.
11) Can I match the 45HCA to the brass and bronze hardware already on my building?
Fifteen finishes are offered, covering bright and satin brass (605, 606), bright and satin bronze (611, 612), oil rubbed satin bronze (613), bright and satin nickel (618, 619), matte black (622), bright and satin chrome (625, 626), bright and satin stainless (629, 630), statuary dark bronze (690), plus the two antimicrobial options. Note that 613 is meant to wear to an antique look over time, and 690 stays a dark brown, so those two behave differently from the clear coated finishes if you are trying to match new to old.
12) Is the 45HCA an electrified mortise lock?
No. The 45HCA is a purely mechanical lockbody with no electrical option, so there is no power transfer, no fail safe or fail secure behavior and nothing to wire. Access control on this opening has to come from the door or frame side, not the lock.
How fast can I get the BEST 45HCACHB626 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 45HCACHB626 come with a warranty?
Absolutely. The BEST 45HCACHB626 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 45HCACHB626?
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 45HCACHB626 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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