BEST 45H Series Heavy Duty Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$635.00
$393.63
BEST 45H Series Heavy Duty Mortise Lock Body with Intruder Function

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

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Model: 45HCAINA626
$635.00
$393.63
Selected Finish is

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

$635.00
$393.63
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BEST 45H Series Heavy Duty Mortise Lock Body with Intruder Function

Professional-Grade Mortise Lock Body for Commercial Security Applications

The BEST 45H Series mortise lock body delivers heavy-duty security with intruder function capability for demanding commercial applications. This field-reversible lock body features a 2-3/4" backset, solid stainless steel latchbolt with 3/4" throw, and 1" throw deadbolt for enhanced security. Constructed from 0.095" cold rolled steel with zinc dichromate plating, this ANSI A156.13 Grade 1 Operation and Strength rated lock body provides exceptional durability for high-traffic installations.

Professional Features & Benefits

  • Heavy-Duty Steel Construction: 0.095" cold rolled steel case, cover, and armored front with zinc dichromate plating for superior strength and corrosion resistance.
  • Enhanced Security Design: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for superior strength and security performance.
  • Field-Reversible Operation: Reversible latch rotates 180 degrees for easy handing change without opening case, plus four position hub toggle design for flexible configuration.
  • Precision Engineering: Roller bearing hub mechanism provides smooth, wear-resistant operation with enhanced cycle life and reduced strike wear.
  • Reinforced Case Integrity: Four case cover screws at each corner plus interlocking armored front and cover design at the latch for maximum structural strength.
  • ANSI Grade 1 Performance: Meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength requirements for commercial applications.
  • Comprehensive Bolt System: 3/4" throw stainless steel latchbolt and 1" throw deadbolt with non-handed stainless steel auxiliary bolt for complete security.
  • Professional Installation Features: Self-aligning trim mechanism and armored front design for fast, accurate installation with automatic door bevel adjustment.

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" 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 and frame by cutting and routing as specified in manufacturer instructions for proper case and strike installation.
  4. Install the lock body into the mortise pocket and secure with mounting hardware per manufacturer torque specifications.
  5. Configure the four position hub toggle to determine locked/unlocked operation for each hub and adjust latch handing if needed using the 180-degree rotation feature.
  6. Test lock body operation including latchbolt, deadbolt, and auxiliary bolt function to verify proper alignment and smooth operation throughout the full range of motion. 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 Installations

Why Choose BEST Quality?

BEST 45H Series mortise lock bodies deliver professional-grade reliability with 0.095" cold rolled steel construction and precision-engineered components rated for demanding commercial applications. The solid stainless steel anti-friction latch system provides 50% more surface contact for superior strength, while the roller bearing hub mechanism ensures smooth, wear-resistant operation. Engineered to meet ANSI A156.13 Grade 1 standards where dependable security performance 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 Lock Body
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 45HCAINA626 – Frequently Asked Questions

1) What does the intruder function do on a BEST 45H mortise lock?
The intruder function (INA) on the BEST 45H is a double-cylinder, keyed-both-sides arrangement. A key is used on either side to throw or retract the 1 inch deadbolt, so a teacher or staff member can lock the door from inside the classroom without stepping into the corridor. The lock body carries a 3/4 inch stainless latchbolt plus a non-handed stainless auxiliary bolt alongside that deadbolt.
2) Will the BEST 45H mortise lock body work on a 2 inch or thicker door?
Not in the standard build. The standard 45H lock configuration is made for 1-3/4 inch doors. BEST does offer a thick-door configuration for doors 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.
3) Do I need to order the BEST 45H handed, or can I flip it 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 a four position hub toggle sets locked or unlocked operation for each hub. The auxiliary bolt is non-handed.
4) Does the 45H mortise lock come with a cylinder or core?
No core is included. The 45H is prepped for BEST small format interchangeable core (SFIC) and ships less core, so you supply and key the cores to your system. Since the intruder function is double cylinder, you need two cores for a complete opening.
5) Is the BEST 45H ANSI Grade 1, and what do I need to hit Grade 1 security?
The 45H meets ANSI A156.13, Series 1000, Grade 1 for Operation and Strength, but Grade 2 for Security as standard. To reach Grade 1 Security you must use a drill resistant core (1CD, 1CDP, 1CDF, or 1CDX) with escutcheon trim, or the 1EK7K4 high security cylinder with sectional trim. If Grade 1 security is written into your spec straight out of the box, the 47H Series is rated Grade 1 for Operational, Strength, and Security.
6) Does this include the lever, rose, escutcheon, or strike?
This is the lock body only. Levers or knobs, roses or escutcheon trim, and cores are ordered separately. Two strike-related options are on the order form: a 7/8 inch lip to center strike, and security head screws, both of which you select yes or no when ordering.
7) Is there an antimicrobial option for a hospital or school?
Two finishes carry the BEST UltraShield antimicrobial coating: 626AM satin chrome and 630AM satin stainless steel. UltraShield inhibits growth of bacteria and other microbes on the hardware surface, and BEST recommends it for healthcare, elderly care, education, transportation, food service, and hospitality.
8) Is this an electrified or access control mortise lock?
No, the 45H intruder lock body is entirely mechanical. There are no electrified options on it, so if the opening needs to tie into an access control system or fail-safe/fail-secure power, this is not the lock body for that job.
9) Does the 45H mortise lock meet ADA accessibility requirements?
The design and operation of the BEST mortise lock meets the intent of the standard for ANSI A117.1 section 404.2.6. Note that operable-part reach and force at the opening also depend on the trim and closer you pair with the lock body.
10) What finishes can I get to match the rest of the doors in my building?
Fifteen finishes are offered: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 oil-rubbed satin bronze, 618 bright nickel, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, 626AM satin chrome antimicrobial, 629 bright stainless, 630 satin stainless, 630AM satin stainless antimicrobial, and 690 statuary dark bronze. Two age on purpose: 613 wears to an antique look, and 690 stays a dark brown over time.
11) Is the BEST 45H lock body rated for high traffic corridors?
It is built as a heavy duty commercial lock body. The case, cover, and armored front are 0.095 inch cold rolled steel with zinc dichromate plating for corrosion resistance, four case cover screws sit at the corners, and the hub runs on roller bearings for cycle life. The latch is solid one-piece stainless steel with roughly 50 percent more contact surface against the strike.
12) Do I have to shim the lock face for a beveled door edge?
No shimming. The armored lock face on the 45H self-adjusts to the proper bevel during installation, and the trim mechanism is self-aligning, which is what keeps install time down on a run of doors.
How fast can I get the BEST 45HCAINA626 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 45HCAINA626 come with a warranty?
Absolutely. The BEST 45HCAINA626 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 45HCAINA626?
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 45HCAINA626 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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