BEST 8K37AB4ES3 Grade 1 Entrance Cylindrical Knob Lock

Grade 1 Entrance Cylindrical Lock, SFIC Less Core, Non-handed

Function: Entrance (AB) ANSI # F109 (F81x F82)
• Latch operated by rotating inside knob, rotating the outside knob only when the inside push button is out or turning the
   outside key
• Outside knob locked by pushing the inside button or pushing and turning the inside button
• Turning the inside button keeps the outside knob locked until button is turned back and released
• Outside knob unlocked by turning the key in the outside knob, rotating inside knob or closing the door (only when the button
   is not turned, this applies for each operation)
• Inside knob always unlockedat)

8K Series – Features:
• Quick, economical rekeying with the BEST® interchangeable core.

• Knobs machined from brass or bronze bar stock.

• Rotating knob face provides for easy hand of door change without removing the knob.

• No keeper hole on keyed knobs for added security.

• Keyed knob removable only after the core is removed.

• The tactile or knurled knob feature designed for blind, safety and accessibility applications.

• Friction insert inside rose resists loosening.

• The optional breakaway feature prevents the lockset from being overpowered by a wrench.

• 9/16" throw, deadlocking latch.

• Spin free knob feature permits the lock to be operated only by use of a key.

• Steel retractor with low friction bearings for smooth, wear resistant operation.

• Long bearing length in chassis for smooth, wear resistant operation.

Products covered by one or more of the following patents: 5,590,555 5,794,472

8K Specifications:
Materials Internal parts are brass or corrosion-treated steel.

Chassis: 2 1/16" diameter to fit 2 1/8" hole in door.

Backset: 2 3/4"

Cylinder: SFIC Prep 6 to 7 Pins - Less Core

Latch: 9/16" throw. Front 2 1/4 x 1 1/8" beveled. Latch housing fits 1" hole in edge of door.

Knobs Diameter: 2 1/8" Projection from door– 2 7/8" #4, #6 Knob Material – Machined from solid brass or bronze.

Roses: All roses are brass or bronze reinforced with steel liner. Roses are threaded to chassis. A – round, 3 3/4" diameter;

Door Thickness: Adjustable from 1 3/8" to 2” standard. Special “E” trim for 2 1/8" to 3” doors available.
The “B” style square trim is for doors 1 3/4" to 2” only.

Strike: (S3) – 4 7⁄8" x 1 1/4" with curved lip and box available (ANSI A115.2).

Certification:
The 8K Cylindrical Lock meets or exceeds the following standards:

Builders Hardware Manufacturers Association: 8K series – Listed by BHMA for A156.2, Series 4000, Grade 1.

Underwriters Laboratories®: 8K series – Listed by Underwriters Laboratories for use on 3 Hr, A label for single or
double swinging doors.

California State Fire Marshal: 8K series – Listed with California State Fire Marshal.Door thickness – Available for 1 3/4"
to 2 1/4" doors only. Spacers available for 1 3/8" doors.