Best Access Systems Stanley Security Solutions, Inc.

BEST Keying Systems and Locks

The BEST® brand carries a strong legacy of ingenuity and excellence that started when Frank E. Best invented the small format interchangeable core in 1921.

Today, the BEST mechanical product portfolio consists of reliable keying systems, key and core control software, cylindrical locks, mortise locks, mortise deadlocks, tubular deadbolts, padlocks, cabinet locks, mortise and rim cylinders, utility cylinder locks, push locks, sliding panel locks, semi-trailer king pin locks, and key retaining devices.

To stay in tune with technological advances, BEST has also introduced a complete suite of pioneering electromechanical locks and electronic access control systems.

Featured Product:

BEST STANLEY Cylindrical Locks - 9K Buy Now

Cylindrical Locks - 9K


Certifications– UL Listed: Listed by Underwriter’s Laboratories for use on 3 Hr, A label single swinging doors (4’x10′). GYJT Builders Hardware-single point locks or latches.

American National Standard: ANSI A156.2, Series 4000 Grade 1 (formerly FF-H-106C Series 161.)

Finish– BHMA US DESCRIPTION 605 3 bright brass 606 4 satin brass 611 9 bright bronze 612 10 satin bronze 613 10B oxidized satin bronze, oil rubbed 618 14 bright nickel plated 619 15 satin nickel plated 622 19 flat black 625 26 bright chromium plated 626 26D satin chromium plated 690 20 dark bronze

Backset– 2 3/4″ standard, 3 3/4″ and 5″ available.

Chassis– Critical latch and chassis components are brass or corrosion-treated steel. 2 1/16″ diameter to fit 2 1/8″ hole in door (Conforms to ANSI A115.2). Lost Motion feature available as an option.(see page 11 for special features)

Door thickness– Available for 1 3/4″

Latch– Solid brass 9/16″ throw. Front 2 1/4″ x 1 1/8″ beveled.

Lever handles– Lever handles are a high-quality zinc alloy. Trim components are brass or bronze.Body is approximately 1 5/8″ in diameter; Handle is approximately 4 3/4″ long (from center-line of chassis). #14 and #15 levers conform to California Administrative Code Title 19 and Title 24. All three styles of levers conform to the Illinois Accessibility Standard.

Mounting– In addition to standard door preparation (ANSI A115.2 for 1 3/4″ doors), two additional holes are needed for through-bolts. Through-bolts require two 5/16″ diameter holes located at 12 o’clock and 6 o’clock positions. A drill jig is provided to insure accuracy of the holes. (see KD303 on back page).

Projection on door– Approximately 2 3/4″ when mounted on 1 3/4″ door.

C – 3″ Convex
D – 3 1/2″ Convex
K – 3″ Convex – no ring
L – 3 1/2″ Convex – no ring

Strike– STK: Conforms to ANSI A115.2 (2 3/4″ x 1 1/8″ with curved lip & box). S3: Conforms to ANSI A115.2 for 1 3/4″ doors (4 7/8″ x 1 1/4″ with curved lip).S3-7/8: Conforms to ANSI A115.2 for 1 3/4″ doors (4 7/8″ x 1 7/8″ flat)

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