BEST 45HCA Series Heavy Duty M...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$635.00
$404.32
BEST 45HCA Series Heavy Duty Mortise Lock Body with Intruder Function

BEST 45HCA Series Heavy Duty Mortise Lock Body with Intruder Function

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Model: 45HCAIND626
$635.00
$404.32
Selected Finish is

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

$635.00
$404.32
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BEST 45HCA Series Heavy Duty Mortise Lock Body with Intruder Function

Professional-Grade Mortise Lock Solution for Commercial Security

The BEST 45HCA Series Heavy Duty Mortise Lock Body delivers commercial-grade security with intruder function capability. This field-reversible lock body features a 2-3/4" backset and is designed for doors 1-3/4" thick with optional thick door configurations up to 5" thick. Manufactured from 0.095" cold rolled steel with zinc dichromate plating for corrosion protection, this ANSI A156.13 Grade 1 Operation and Strength rated lock provides superior durability for 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 strength and corrosion resistance for commercial environments.
  • Superior Latch Design: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for enhanced 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, with four position hub toggle design for flexible configuration.
  • Enhanced Case Integrity: Four case cover screws at each corner plus interlocking armored front and cover design at the latch provide superior structural strength.
  • Roller Bearing Hub Mechanism: Smooth, wear-resistant operation with lever return spring mechanism located in trim for enhanced protection against lever droop.
  • ANSI Grade 1 Compliance: Meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength requirements with Grade 2 Security rating for commercial applications.
  • Cylinder Security Features: Solid machined cylinder rings with wavy washer provides wrenching resistance, with security screw preventing cylinder removal without core removal.
  • Anti-Microbial Finish Options: Available with UltraShield antimicrobial protected coating in 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" for thick door configuration), mortise pocket dimensions, and handing requirements.
  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 mortise pocket to accommodate the 5-7/8" H x 7/8" D x 4-1/16" W case dimensions and route for armored front installation.
  4. Install lock body in mortise pocket and secure with four case cover screws at each corner, ensuring proper alignment with door bevel using self-aligning mechanism.
  5. Configure four position hub toggle design for desired operation (always locked, always unlocked, or locked by key) and verify field-reversible latch orientation.
  6. Test lock operation including 1" deadbolt throw, 3/4" latchbolt operation, and cylinder function to verify proper installation and smooth operation. 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

Anti-Microbial 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 surface of the hardware, 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 locks deliver professional-grade reliability with 0.095" cold rolled steel construction and solid stainless steel components rated for heavy-duty commercial applications. ANSI A156.13 Grade 1 Operation and Strength certification ensures dependable performance in demanding environments. Engineered with roller bearing hub mechanisms and anti-friction latch design for smooth operation and extended service life where reliable security is essential.

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 Locks
Subcategory:
Mortise
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Intruder
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Intruder
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 45HCAIND626 – Frequently Asked Questions

1) What does the intruder function on a BEST 45HCA mortise lock actually do?
Intruder function (IND) on the BEST 45HCA is a double-cylinder arrangement, so the door can be locked down by key from inside the room without stepping into the corridor. Both sides take a cylinder, and the 45HCA is keyed as standard. It's the mortise-mechanical answer to classroom lockdown. If you'd rather have that lockdown handled electronically with credentials, the TownSteel FME-4000 is an electronic intruder classroom mortise lockset.
2) Do I get levers and trim with the BEST 45HCA, or is it just the lock body?
Lock body only. The 45HCA IND ships as the mortise case with its faceplate and latching, so you order trim (levers or knobs, roses or escutcheons), cylinders or cores, and the strike separately. Worth noting on this series: the lever return spring lives in the trim, not the case, which is what keeps levers from drooping over time, so the trim you pick is not an afterthought.
3) Will the 45HCA fit a door thicker than 1-3/4 inches?
The standard configuration is built for 1-3/4 inch doors. For anything thicker, up to 5 inches, BEST makes a thick-door configuration, but the thickness has to be specified at the time of order. It isn't something you adapt in the field, so measure the leaf before you place the order.
4) Will the BEST 45HCA latch into the strike that's already in my frame?
Check the throws against what you have. The latchbolt throws 3/4 inch and the deadbolt throws a full 1 inch, so the existing strike needs a deadbolt pocket deep enough for that 1 inch bolt. Lip projection matters too, which is why a 7/8 inch lip-to-center strike is offered as an ordering option for frames with deeper reveals. If the existing prep is a different lock brand's strike, plan on a new strike package.
5) Do I have to specify handing on the BEST 45HCA, and can it be changed on site?
Handing is a required selection at order: right hand, left hand, right hand reverse bevel, or left hand reverse bevel. That said, the 45HCA is field reversible. The latch rotates 180 degrees without opening the case, and there's a four-position hub toggle, so a locksmith can flip handing on the door if the opening turns out opposite to the drawing.
6) Does the BEST 45HCA take a small format interchangeable core?
It comes prepped for SFIC and ships less core, so you supply the cores and key them into your existing BEST system. Both sides need a cylinder because this is a double-cylinder intruder function. A machined cylinder ring with a wavy washer resists wrenching, and a security screw stops the cylinder being backed out unless the core is pulled first.
7) Is the BEST 45HCA Grade 1, and what do I need to hit Grade 1 security?
The 45H Series is rated to ANSI A156.13, Series 1000, Grade 1 Operation and Strength, with Grade 2 Security as supplied. To reach Grade 1 Security you have to add a drill resistant core (1CD, 1CDP, 1CDF or 1CDX) with escutcheon trim, or a 1EK7K4 high security cylinder with sectional trim. If the spec calls for Grade 1 across operation, strength and security straight out of the box, that's the 47H Series instead.
8) What is the closest alternative to a BEST 45HCA intruder mortise lock if I want the same classroom intruder capability but with electronic credentials?
The TownSteel FME-4000 Series is an electronic intruder classroom mortise lockset with RFID technology, Grade 1 and heavy duty, for 1-3/4 inch doors. The BEST 45HCA is a mechanical, non-electronic lock body with an intruder function and a 2-3/4 inch backset, keyed double cylinder with SFIC prep less core. The difference is credential type: the FME-4000 uses RFID cards, while the 45HCA is operated by keys on both sides.
9) We only need a standard classroom mortise lock, not intruder function. What should we order instead of the BEST 45HCA?
For a straight classroom function, the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset from the ML2000 Series for 1-3/4 inch doors, and the Cal-Royal NM8070 is a heavy duty Grade 1 classroom mortise lockset with auxiliary deadlatch, also 1-3/4 inch. Both are keyed from the outside only in classroom function, where the BEST 45HCA intruder lock is a double cylinder arrangement allowing the door to be locked from inside the room.
10) Our doors are thinner than 1-3/4 inch. Is there a mortise lock alternative to the BEST 45HCA?
The BEST 45HCA lock body is built for 1-3/4 inch doors with a thick door configuration available up to 5 inches. For thinner leaves, the Alarm Lock DL3500CR and DL2700CR Trilogy electronic mortise locks cover a 1-5/8 to 1-7/8 inch door thickness range in Grade 1 classroom function, and the Baldwin 6310 entry/storeroom mortise lock body covers 1-3/8 inch and over with a 2-1/2 inch backset. Note the Baldwin uses a 2-1/2 inch backset rather than the 2-3/4 inch backset of the 45HCA, so the mortise pocket location differs.
11) For a behavioral health or patient room, should I use the BEST 45HCA or a ligature resistant mortise lock?
For anti-ligature openings the TownSteel MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, the MRX-A-01 is the same passage function with ligature resistant arch trim, 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. The BEST 45HCA is a standard-profile heavy duty lock body with intruder function; it is available in 626AM and 630AM UltraShield antimicrobial finishes for healthcare cleanliness, but it is not a ligature resistant design.
12) Which finish should I order for a hospital or food service facility?
Two antimicrobial options are offered: 626AM satin chrome and 630AM satin stainless steel, both with the UltraShield coating that inhibits bacteria and microbe growth on the hardware surface. BEST recommends it for hospital and healthcare, elderly care, education, transportation, food service and hospitality. Standard finishes run the full range, 605, 606, 611, 612, 613, 618, 619, 622, 625, 626, 629, 630 and 690, so matching existing openings in a building is straightforward.
13) How is the BEST 45HCA different from a classroom function mortise lock like the Cal-Royal NM8070 or Corbin Russwin ML2003?
Function is the difference, not grade. The Cal-Royal NM8070 and the Corbin Russwin ML2003 are Grade 1 classroom function mortise locksets, keyed from the corridor side only. The 45HCA IND is a double-cylinder intruder lock, which means the lockdown can be done by key from inside the room. Both Cal-Royal and Corbin Russwin ship as complete locksets with trim; the 45HCA is the lock body alone, with trim and cores ordered separately.
14) Is the BEST 45HCA an electronic lock, and what if I need access control on that opening?
No, the 45HCA is purely mechanical, no wiring, no power, nothing to fail in an outage. If the opening needs credentials or audit trail, the comparable mortise options include the Schlage LEMD-GRW Grade 1 ENGAGE wireless mortise lock with a 125kHz proximity reader, or the Command Access ML190 motorized mortise lock with field selectable electric latch retraction or electric unlock on 24VDC.
15) Is the 45HCA tough enough for a high-traffic commercial corridor?
It's built as heavy duty commercial hardware. The case, cover and armored front are 0.095 inch cold rolled steel with zinc dichromate plating for corrosion resistance, the latch is solid one-piece stainless with a curve that gives 50 percent more strike contact, and the hub runs on roller bearings for wear resistance. That's the construction level you'd specify for school corridors, hospitals and government buildings, not light interior doors.
16) Does the BEST 45HCA 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, which covers door hardware operation. Since this is the lock body only, the trim you pair with it determines the actual grasping surface, so specify lever trim rather than knobs on accessible openings.
17) What is a non-keyed mortise lock alternative for doors that do not need the intruder function?
The Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating, and the Hager 3810S is a Grade 1 passage mortise lock with rose and a 2-3/4 inch backset covering 1-3/4 to 2-1/2 inch doors. All three leave the door free at all times, unlike the BEST 45HCA, which is keyed with a double cylinder arrangement.
18) We need a storeroom function mortise lock, not intruder. What are the options?
The Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series supplied with an Arcadia lever, and the Cal-Royal NM8080 is a heavy duty Grade 1 storeroom mortise lockset with an interchangeable core option for 1-3/4 inch doors. Both keep the outside lever locked at all times and keyed, which differs from the BEST 45HCA intruder function where the room side can lock the outside trim by key.
19) Does a Sargent 4874 double cylinder mortise deadbolt do the same job as a BEST 45HCA?
No. The Sargent 4874 is a double cylinder mortise deadbolt in the 4870 Series with a 2-3/4 inch backset, so it provides a bolt only and no latch or lever operation. The BEST 45HCA is a full mortise lock body with both a 1 inch throw deadbolt and a 3/4 inch throw latchbolt operated through the hub, on the same 2-3/4 inch backset. Use the 4874 where you are adding a deadbolt above an existing latch, and the 45HCA where one mortise pocket has to handle latching and locking together.
20) Can I use an electrified mortise lock in place of the BEST 45HCA if we are tying the door into access control?
Yes, with a different function. The Command Access ML190 Series is a heavy duty motorized mortise lock with field selectable electric latch retraction or electric unlock operation on 24VDC in storeroom function, and the Schlage L9092EU with 03A trim is a heavy duty electric lock/unlock outside lever mortise lock, keyed outside, with request to exit, for 1-3/4 inch doors on 12 or 24VDC. The BEST 45HCA is a non-electronic mechanical body, so it carries no wiring and no remote release.
21) What is a simpler privacy option if the opening is a restroom rather than a classroom?
The Cal-Royal NM8440 is a heavy duty 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 1-3/4 to 2 inch doors. Both are privacy function with thumbturn operation, where the BEST 45HCA is a keyed double cylinder intruder lock intended for openings that need key control from both sides.
22) If I need a dormitory or corridor function instead of intruder, what mortise lock covers that?
The Sargent 7925 is a Grade 1 heavy duty dormitory exit function mortise lock in the 7900 Series with rose trim and a single cylinder deadbolt. It differs from the BEST 45HCA in cylinder arrangement: the 7925 uses a single cylinder deadbolt, while the 45HCA is a double cylinder keyed intruder lock with a 1 inch deadbolt throw.
23) Is there a reason to pick 613 or 690 bronze over the other finishes?
Both are living finishes and they age differently. 613 is oxidized satin bronze, oil rubbed, and it is meant to wear over time into an antique appearance. 690 is a dark bronze coating over brass and stays a dark brown look. If you're replacing one lock on a run of doors that already has 613 on them, expect the new one to look brighter until it wears in.
24) What are the security head screws on the BEST 45HCA for?
They're a tamper-resistant option selected at order, yes or no, and they matter on openings where the public can reach the trim: detention-adjacent spaces, school corridors, transit facilities. Standard screws come out with a common driver. Pair them with the case's four corner cover screws and interlocking armored front for the full package.
How fast can I get the BEST 45HCAIND626 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 45HCAIND626 come with a warranty?
Absolutely. The BEST 45HCAIND626 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 45HCAIND626?
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
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