BEST 45HCA Series Heavy Duty M...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$407.00
$251.67
BEST 45HCA Series Heavy Duty Mortise Lockbody with Deadlock Function

BEST 45HCA Series Heavy Duty Mortise Lockbody with Deadlock Function

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Model: 45HCAYD626
$407.00
$251.67
Selected Finish is

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

$407.00
$251.67
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BEST 45HCA Series Heavy Duty Mortise Lockbody with Deadlock Function

Professional Grade Mortise Lock Case for Commercial Applications

The BEST 45HCA Series mortise lockbody delivers Grade 1 operational and strength performance with deadlock function for demanding commercial applications. This field-reversible lockbody features a 2-3/4" backset and accommodates doors from 1-3/4" to 5" thick. Constructed with 0.095" cold rolled steel case measuring 5-7/8" H x 7/8" D x 4-1/16" W, this heavy-duty lock meets ANSI A156.13 Series 1000 Grade 1 standards for superior durability and security.

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.
  • Enhanced Case Integrity: Four corner case cover screws plus interlocking armored front and cover design at the latch ensure superior structural performance.
  • Solid Stainless Steel Latch: One-piece anti-friction latch provides 50% more surface contact with strike for superior strength and security with precision-engineered curve for enhanced cycle life.
  • Field Reversible Design: Reversible latch rotates 180 degrees for easy handing change without opening case, with four-position hub toggle for flexible configuration.
  • Roller Bearing Hub Mechanism: Provides smooth, wear-resistant operation for long-term reliability in demanding applications.
  • Grade 1 Performance: Meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength standards with Grade 2 Security rating for commercial applications.
  • Versatile Door Compatibility: Standard configuration for 1-3/4" doors with thick door options available up to 5" thickness for various installation requirements.
  • 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 (1-3/4" standard, up to 5" with thick door configuration), 2-3/4" backset, and proper mortise pocket dimensions.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for the 8" H x 1-1/4" W faceplate.
  3. Prepare door by cutting mortise pocket to accommodate the 5-7/8" H x 7/8" D x 4-1/16" W case dimensions and routing as specified in manufacturer instructions.
  4. Install the lockbody into the mortise pocket and secure with appropriate fasteners, ensuring the self-aligning armored front properly adjusts to door bevel during installation.
  5. Configure the four-position hub toggle to determine locked/unlocked operation for each hub and set field-reversible latch orientation as needed for door handing.
  6. Test lockbody operation to verify proper deadbolt throw (1"), latchbolt function (3/4" throw), and smooth roller bearing hub mechanism operation. 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 45HCA Series mortise lockbodies deliver professional-grade reliability with 0.095" cold rolled steel construction and Grade 1 ANSI A156.13 Series 1000 performance standards. The solid stainless steel anti-friction latch and roller bearing hub mechanism provide enhanced cycle life and wear resistance for demanding commercial applications. Engineered for superior strength and security where dependable performance is 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 Locks
Subcategory:
Mortise
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Deadlock
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Deadlock
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 45HCAYD626 – Frequently Asked Questions

1) What does the YD deadlock function on the BEST 45HCA mortise lock actually do?
Deadlock means bolt only, no knob or lever operation. The BEST 45HCA with YD function throws a 1 inch stainless steel deadbolt operated by a cylinder, with no handle trim working the case. Use it where you want a keyed bolt in a mortise pocket and the door is pushed or pulled open, not where anyone needs to retract a latch by hand. If you need a latchbolt worked by a lever, you need a different 45H function.
2) Will the BEST 45HCA mortise lockbody fit a door thicker than 1-3/4 inches?
Standard build is for 1-3/4 inch doors. Thick door configurations go up to 5 inches, but the thickness has to be specified when the order is placed, so it is not something you adjust in the field. Backset is fixed at 2-3/4 inches.
3) Does the BEST 45HCA come with a cylinder or core?
No core included. The case is prepped for a BEST small format interchangeable core and ships less core, so you supply the SFIC core keyed to your system. That is what makes it easy to fold into a building already on BEST keying.
4) Do I have to order the BEST 45HCA handed, or can I flip it on the job?
Handing is selected at order, with right hand, left hand, right hand reverse bevel and left hand reverse bevel all offered. That said, the latch is reversible in the field, rotating 180 degrees without opening the case, and the hub has a four-position toggle, so a mis-handed delivery is recoverable on site.
5) Is the BEST 45HCA Grade 1, and what do I need to hit Grade 1 security?
The 45H series carries 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 calls for Grade 1 across all three categories out of the box, the 47H series is the one that carries it.
6) Will the BEST 45HCA deadbolt catch my existing strike?
The deadbolt throws 1 inch and the auxiliary latch 3/4 inch, both stainless. Faceplate is 8 by 1-1/4 by 1/16 inches and the lock face self-adjusts to the door bevel during install. Mortise pocket has to take a case of 5-7/8 H x 7/8 D x 4-1/16 W. If your frame prep was cut for a different mortise faceplate size, plan on reworking the strike and frame cutout.
7) What is a comparable mortise deadbolt if the BEST 45HCA deadlock body does not suit the opening?
The BEST 45HCA is a keyed mortise lockbody with deadlock function, single cylinder, 2-3/4 inch backset. For a straight mortise deadbolt alternative, the Sargent 4874 is a double cylinder mortise deadbolt also built on a 2-3/4 inch backset, so it keys from both sides rather than one. The Kaba Ilco 185 Series is another mortise deadbolt option and is supplied non-handed, which removes the handing decision the 45HCA requires at order time.
8) I need latch operation with a lever, not just a deadbolt. What mortise lock should I use instead of the BEST 45HCA?
The 45HCA is a deadlock function lockbody, so it throws a bolt and does not give you lever-retracted latching for everyday passage. For a keyed lever opening, the Accentra 8805FL is a Grade 1 storeroom mortise lock with an Arcadia lever, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset with an interchangeable core option, which suits sites already standardized on small format cores. For office use, the Cal-Royal NM8050 is a Grade 1 office/entrance mortise lockset with an auxiliary deadlatch.
9) What should I use instead of the BEST 45HCA if the door needs access control release?
The 45HCA is a mechanical lockbody with no electrical option. For an electrified mortise opening, the Command Access ML190 is a heavy duty motorized mortise lock with field selectable fail safe or fail secure operation on 24VDC in storeroom function, and the Schlage L9092EU with 03A trim is a heavy duty electric lock/unlock outside lever mortise lock for 1-3/4 inch doors with request to exit and 12/24VDC operation.
10) Which finish should I pick for a hospital or food service 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 recommends these wherever cleanliness is a priority, which covers healthcare, elderly care, education, transportation, food service and hospitality. Thirteen standard finishes are also offered, from 605 bright brass through 690 dark bronze.
11) What do I need to add to the BEST 45HCA order to have a complete opening?
The 45HCA is the lockbody only. Beyond handing, you choose whether you want security head screws and whether you need the 7/8 inch lip to center strike instead of the standard strike. On top of that you supply the SFIC core and the trim, since no core ships with the case.
12) What is a good alternative if I need a mortise lock with a lever rather than a bolt-only deadlock?
Since the 45HCA YD is bolt only, look at a keyed lever mortise lockset instead. The Corbin Russwin ML2003 is a Grade 1 classroom mortise lockset for 1-3/4 inch doors, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset for 1-3/4 inch doors with an interchangeable core option, which keeps you on IC keying like the BEST. For an office or entrance function, the Cal-Royal NM8050 covers it.
13) Which mortise locks are equivalent in grade to the BEST 45HCA for a classroom door?
The BEST 45HCA carries ANSI A156.13 Series 1000 Grade 1 operation and strength, but its function is deadlock, not classroom. For a classroom opening at the same grade, the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset for 1-3/4 inch doors, and the Cal-Royal NM8070 is a Grade 1 classroom mortise lockset with auxiliary deadlatch, also for 1-3/4 inch doors. The Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset if you want visual status on the door.
14) Can I use an electronic mortise lock in place of the BEST 45HCA on a 1-3/4 inch commercial door?
The BEST 45HCA is a mechanical, non-electronic lockbody for 1-3/4 inch doors in standard configuration. If you want credential control instead, the Schlage CO-100 is a Grade 1 standalone electronic mortise lock with keypad reader for 1-3/4 inch doors, and the TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID, also 1-3/4 inch. Note the Alarm Lock Trilogy DL3500CR is a Grade 1 electronic mortise lock but lists a 1-5/8 to 1-7/8 inch door thickness range, so confirm your door falls in that window.
15) What looks like a substitute for the BEST 45HCA mortise lockbody but is not?
A few items sit close in the catalog and will not do the same job. The Sargent 130KB and 130W are mortise thumbturns, trim pieces rather than a lockbody. The Falcon MESC600DT is a dummy escutcheon lever trim for M9900 exit devices, and the Schlage L0170 is half dummy trim with no locking function at all. The Schlage PC10 is a Grade 1 passage lock but cylindrical, not mortise, so it will not fill a mortise pocket. The 45HCA itself is a keyed mortise lockbody with deadlock function.
16) For a healthcare corridor, what alternatives to the BEST 45HCA address cleanliness or ligature concerns?
The BEST 45HCA offers UltraShield antimicrobial protected coating in 626AM satin chrome and 630AM satin stainless finishes, aimed at hospital and elderly care work. If the opening instead calls for ligature resistance, the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant in satin stainless, and 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.
17) I only need a non-keyed mortise latch, not the keyed BEST 45HCA. What is simpler?
The BEST 45HCA is keyed with single cylinder deadlock function. When the opening needs nothing more than latching, the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, and the Falcon MA101 is a Grade 1 heavy duty mortise passage lock that is field reversible like the 45HCA and is fire rated. Hager also offers passage in the 3800 Series at a 2-3/4 inch backset matching the 45HCA, as the 3810S with rose or 3810E with escutcheon.
18) How does the BEST 45HCA compare to a dormitory function mortise lock with a deadbolt?
The BEST 45HCA gives you deadlock function alone, a 1 inch throw stainless deadbolt operated by a single cylinder, with no lever latching. The Sargent 7925 is a Grade 1 heavy duty dormitory exit function mortise lock with rose trim that combines a single cylinder deadbolt with lever operation, so it covers both the bolt and everyday egress in one case.
19) Is the BEST 45HCA rugged enough for a high traffic entry?
It is built for it. Case, cover and armored front are 0.095 inch cold rolled steel, zinc dichromate plated against corrosion, with four corner cover screws and an interlocking armored front and cover at the latch. The one-piece stainless anti-friction latch gives about 50 percent more contact surface with the strike, and the hub runs on roller bearings. Rated heavy duty for commercial service.
20) Does the BEST 45HCA need power or wiring?
No. It is a purely mechanical mortise lockbody, no electronics and no wiring in the door. If the opening needs access control or credential entry, a different product class applies, such as the Schlage CO-100 standalone electronic mortise lock or the TownSteel FME-2000 Grade 1 RFID mortise lockset, both for 1-3/4 inch doors.
21) Does the BEST 45HCA meet accessibility requirements?
BEST states the design and operation of its mortise lock meets the intent of ANSI A117.1 section 404.2.6. Note that with the deadlock function there is no lever to operate, so how the opening as a whole reads for accessibility depends on what else is on the door.
How fast can I get the BEST 45HCAYD626 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 45HCAYD626 come with a warranty?
Absolutely. The BEST 45HCAYD626 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 45HCAYD626?
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 45HCAYD626 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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