BEST 6KL Series Grade 2 Deadlo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$78.08
BEST 6K Series Part, 2-3/4" Deadlocking Latch, Satin Chrome

BEST 6KL Series Grade 2 Deadlocking Latch with Steel Construction

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Model: 6KL2626
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$78.08
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BEST 6KL Series Grade 2 Deadlocking Latch with Steel Construction

Professional Medium-Duty Cylindrical Lock Solution

The BEST 6KL Series Deadlocking Latch delivers Grade 2 medium-duty performance with superior steel or brass construction for enhanced strength and durability. This cylindrical knob set features a 1/2" throw deadlocking latch and 7-pin SFIC keying for professional security applications. UL/cUL listed for 3-hour fire rating on single 4' x 8' doors, meeting ANSI/BHMA A156.2 Series Grade 2 standards for commercial installations.

Professional Features & Benefits

  • Heavy-Duty Construction: Steel or brass construction provides superior strength compared to weaker metal alternatives used in standard cylindrical knob sets.
  • Deadlocking Security: 1/2" throw deadlocking latch ensures positive engagement and enhanced security performance.
  • Professional Keying System: 7-pin SFIC (Small Format Interchangeable Core) keying allows for flexible master key systems and easy rekeying.
  • Fire-Rated Performance: UL/cUL listed for 3-hour fire rating on single 4' x 8' doors for code compliance in fire-rated openings.
  • Grade 2 Certification: ANSI/BHMA A156.2 Series Grade 2 rating ensures medium-duty commercial performance standards.
  • Quality Materials: Component parts manufactured from brass, bronze, or zinc with internal parts of brass or zinc dichromate steel for long-term reliability.
  • Comprehensive Warranty: Three-year mechanical warranty and three-year finish warranty (613 finish excluded) for added confidence and protection.

Technical Specifications

  • Certifications ANSI/BHMA A156.2 Series—Grade 2 UL/cUL listed (3 hour) for single 4’ x 8’ doors
  • Product Specifications Materials: Component parts brass, bronze, or zinc; internal parts brass or zinc dichromate steel Latch: 1/2” throw deadlocking
  • Keying 7-pin SFIC 
  • Warranties Three-year mechanical Three-year finish (613 carries no finish warranty)

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. 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 6KL Series cylindrical locks deliver professional-grade reliability with steel or brass construction rated for Grade 2 medium-duty commercial applications. Three-year mechanical and finish warranties provide added confidence and protection. Engineered for demanding commercial applications where dependable performance and fire-rated compliance are essential.

Manufacturer Resources

BEST Product Overview

Product Specs

Series:
6K Series
Product Group:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Commercial/Residential:
Commercial
Department:
Door Hardware
Product Type:
Deadlatches

BEST 6KL2626 – Frequently Asked Questions

1) What backset do I need for a BEST 6KL deadlocking latch, and which ones are available?
The 6KL latch comes in four backsets: 2-3/8 inch, 2-3/4 inch, 3-3/4 inch and 5 inch. Measure from the door edge to the center of the existing bore hole. On a standard commercial opening that will be 2-3/4 inch; older or residential-prep doors are usually 2-3/8 inch. The 3-3/4 and 5 inch backsets exist for doors with wide stiles or a deep lock edge, which is where most people get the order wrong.
2) Will a BEST 6KL latch deadlock so the bolt can't be shimmed with a card?
Yes. The 6KL is a deadlocking latch with a 1/2 inch throw, so once the door closes and the auxiliary plunger rides the strike, the latchbolt is held against being pushed back. That is the difference between it and a plain spring latch on an exterior or tenant door.
3) Can I put a BEST 6K latch on a fire-rated door?
UL and cUL listed for a 3 hour rating on single doors up to 4 feet by 8 feet. That covers most fire-rated corridor and stairwell openings in a commercial building. Pairs and oversize leaves are outside what that listing covers.
4) Is the 6KL latch tough enough for a school or apartment corridor, or do I need Grade 1?
The 6KL is certified to ANSI/BHMA A156.2 Grade 2, which is medium duty. That suits offices, classrooms, tenant units and back-of-house doors. For a high-traffic main entrance, a stairwell that cycles all day, or anywhere the spec calls out Grade 1, step up rather than fight the grade. Among the deadlatches we carry, the Adams Rite 4300 Steel Hawk is a Grade 1 heavy duty option.
5) Does the BEST 6KL latch work with my existing SFIC cores and master key system?
Keying is 7-pin SFIC, the standard BEST small format interchangeable core. If your building is already on 7-pin SFIC, the cores you have pull and drop straight in, and the opening folds into the existing master key system without rekeying pins in the lock. A locksmith swaps the core with the control key rather than pulling the lockset off the door.
6) I'm replacing an aluminum storefront deadlatch. Is a BEST 6K latch the right part?
No. The 6KL is a cylindrical latch for a bored door prep, keyed on 7-pin SFIC. Narrow stile aluminum glass doors take a different animal entirely: the Adams Rite 4781 is a two-point deadlatch with a paddle built for narrow stile doors, and the 4510 and 4530 are standard duty deadlatches for 1-3/4 inch doors. Glass front installers should be looking at that family, not a cylindrical latch.
7) The opening needs to be released electrically - is there a deadlatch that does that, or does the BEST 6KL?
The BEST 6KL is a mechanical deadlocking latch with a 1/2 inch throw, keyed through 7-pin SFIC, with no electrical release. For electric release on a 1-3/4 inch door, the Adams Rite 4300 Steel Hawk is an electrified deadlatch with multi-voltage operation at Grade 1 heavy duty, and the Adams Rite 4510 is an electrified deadlatch with a flat faceplate at Grade 1 standard duty. Both are complete deadlatch bodies requiring their own prep and power run.
8) Can an Adams Rite 4530 deadlatch replace a BEST 6KL deadlocking latch in a cylindrical knob prep?
No. The BEST 6KL is the deadlocking latch unit for the 6K Series cylindrical knob lock, with a 1/2 inch throw deadlocking latch driven by the knob and available in 2-3/8, 2-3/4, 3-3/4 and 5 inch backsets. The Adams Rite 4530 is a standard duty deadlatch built as a Grade 1 lock body for 1-3/4 inch doors, not a latch cartridge that drops into a 6K chassis. If the door already carries a 6K cylindrical lock, the 6KL latch is the part that fits the existing bore; the 4530 requires its own separate preparation.
9) What should I use for a narrow stile aluminum storefront door instead of a BEST 6KL latch?
The Adams Rite 4781 is a two-point deadlatch with paddle designed for narrow stile doors, rated Grade 1 standard duty for 1-3/4 inch doors. The BEST 6KL deadlocking latch is a component of a 6K Series cylindrical knob lock, which needs the cross-bore and stile width a cylindrical lock requires, so it is the wrong direction for a narrow aluminum stile. For a glass front opening, the 4781 is the part built for that stile condition.
10) Will the 6KL latch drop into my existing strike, or do I have to re-prep the frame?
The latch throws 1/2 inch, which is the normal cylindrical latch projection, so an existing ANSI strike or standard T-strike in the frame will usually take it as long as the backset and the bore location match. What decides it is the backset, not the throw: order the backset that matches the door's existing prep and the latch centers on the strike where the old one did.
11) What is the 6KL, a whole lockset or just the latch?
It is the latch unit itself, the part that goes in the edge bore and throws the bolt. Buy it when the knob or lever trim on a 6K Series lock is fine but the latch is worn, dragging, or the wrong backset for a door you are re-hanging. Keep a couple of the common backsets on the truck and you can fix most 6K openings without pulling a full lockset.
12) What finishes does the BEST 6K deadlocking latch come in, and can I match the rest of my doors?
Seven finishes: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 satin bronze oil-rubbed, 625 bright chrome and 626 satin chrome. Every one of those is offered in all four backsets, so matching a building standard finish never forces you off the backset the door actually needs. 626 satin chrome is the usual commercial default.
13) I need a Grade 1 deadlatch rather than Grade 2 - what are the options?
The BEST 6KL deadlocking latch carries ANSI/BHMA A156.2 Grade 2 medium duty. Among deadlatches, the Adams Rite 4300 Steel Hawk is Grade 1 heavy duty for 1-3/4 inch doors, and the Adams Rite 4510 and 4530 are Grade 1 standard duty for 1-3/4 inch doors. Those are separate deadlatch lock bodies with their own door preparation, not replacements for the latch inside a 6K cylindrical chassis, so moving to Grade 1 here means changing the lock, not just the latch.
14) Which deadlatch works on a 3-hour fire rated opening with an SFIC master key system?
The BEST 6KL deadlocking latch is UL/cUL listed for a 3-hour rating on single 4 ft by 8 ft doors and uses 7-pin SFIC keying, which is what lets it join an existing small format interchangeable core master key system. The Adams Rite deadlatch bodies in the comparable range, including the 4300 Steel Hawk, 4510, 4530 and 4781, are cataloged by grade, duty level and a 1-3/4 inch door thickness rather than as SFIC cylindrical latches, so a facility standardizing on SFIC cores and a fire rated wood or hollow metal door is the 6KL case.
15) What is the 6KL latch actually made of?
Component parts are brass, bronze or zinc, with internal parts of brass or zinc dichromate steel. The dichromate plating on the steel internals is corrosion protection, which matters on an exterior door or an unconditioned stairwell where a plain steel latch would seize.
16) Does the oil-rubbed bronze 613 finish hold up outdoors?
613 satin bronze oil-rubbed is a living finish that darkens and wears with handling, which is the intent of it. If you want a finish that stays as delivered on an exterior or high-touch door, take 612 satin bronze or 626 satin chrome instead.
17) What is the difference between the Adams Rite 4530 and the 4510 if I am not using the BEST 6KL?
Both are Adams Rite standard duty Grade 1 deadlatches for 1-3/4 inch doors. The 4530 is built with a bolt holdback feature, which holds the latch retracted for periods when the opening is meant to stay push-pull. The 4510 is an electrified deadlatch with a flat faceplate, released by power rather than held back mechanically. The BEST 6KL, by contrast, is a 1/2 inch throw deadlocking latch that serves a 6K Series cylindrical knob lock and offers neither holdback nor electrification.
How fast can I get the BEST 6KL2626 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 6KL2626 come with a warranty?
Absolutely. The BEST 6KL2626 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 6KL2626?
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 6KL2626 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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