Best 9K37D-16-D-S3 Interchangeable Core Storeroom Lever Lockset

Usually Ships: 1-2 Business Days
  • Extra Heavy Duty, ANSI/BHMA Certified Grade 1
  • ADA compliant, 3-hour fire-rated
  • Storeroom function – less core (sold separately)

Available Options:


Best 9K37D-16-D-S3 Grade 1 Storeroom Cylindrical Lock, 16 Lever, D Rose, SFIC Less Core, S3 4-7/8″ ANSI Strike

Building on BEST’s legacy of innovation, the 9K series cylindrical lock combines top-quality materials and exceptional craftsmanship into a tough, dependable, long-lasting security solution. The 9K series was designed to be low maintenance, easy to install, durable, and secure.

Storeroom (D) – ANSI Function F86

  • Pre-assembled heavy-duty chassis – Out of the box and onto the door, the 9K offers quick and easy installation.
  • Cast construction lock hub – Protects the lock’s critical components from everyday use and abuse.
  • Hardened steel through-bolt studs – Deliver maximum lever torque resistance that stands up to the hardiest hands.
  • Proven quality – Tested to exceed 10 times the BHMA Grade 1 criteria by UL.




605 Bright Brass, 606 Satin Brass, 612 Satin Bronze, 613 Oil Rubbed Bronze, 622 Matte Black, 625 Bright Chrome, 626 Satin Chrome

Lock Function


Lever Design

16 Lever (Curved, No Return)


D – 3 1/2” Convex


Not Included – Sold Separately


Heavy Duty

ANSI/BHMA Standard

Listed by BHMA for A156.2, Series 4000, Grade 1

Fire Rating

Listed by Underwriters Laboratories for use on 3 Hr, A label for single or double swinging doors

ADA Compliance

Meets ADA requirements – A117.1 Accessibility Code




1/2” throw, deadlocking – 1-1/8" x 2-1/4" face


S3: Conforms to ANSI A115.2 for 1 3/4” doors (4 7/8” x 1 1/4” with curved lip).



Door Thickness

1-3/4" to 2-1/4"

Buy American Act Compliance

Meets Buy Amercian Act – Made in USA

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Best 9K37D-16-D-S3 Interchangeable Core Storeroom Lever Lockset