Grade 1 Heavy Duty Cylindrical Knob

Locks are for commercial, institutional and industrial use, such as schools, hospitals and factories, where a long life of dependable operation must be combined with a high degree of resistance to physical abuse and misuse.Locks are for commercial, institutional and industrial use, such as schools, hospitals and factories, where a long life of dependable operation must be combined with a high degree of resistance to physical abuse and misuse.

Features

- Exceeds 800,000 cycle ANSI Grade 1 requirements.
- Meets or exceeds ANSI A156.2 Series 4000 Grade 1 lock knob strength and operational requirements.
- Concealed mounting screws.
- Cylindrical housing --- heavy gauge cold rolled steel mechanisms are corrosion treated for normal atmosphere conditions.
- Roller bearings and coil compression springs on latch retractors ensure long life and smooth action.
- Threaded roses hold lock firmly in place and rose assembly adjustable for door thickness without removing the keyed knob.

Specifications

Door Thickness

13/8” to 2” (35mm-51mm) standard. 2” to 21/2” (51mm-64mm) optional.

Backset
23/4” (70mm) standard. 23/4”, 33/4” and 5” (60mm,
95mm, 127mm) optional

Latch Bolt
Brass, 1/2” (12mm) throw, deadlocking on keyed and exterior functions, 3/4” (19mm) throw anti-friction latch available for pairs of fire doors.

Faceplate
Brass, bronze or stainless steel. 11/8” x 21/4” (29mm x 57mm) square corner, beveled.

Lock Chassis
Steel, zinc dichromate plated for corrosion resistance.

Handing
Keyed functions of knob designs are field reversible.

Strike
ANSI curved lip strike 11/4” x 47/8” x 13/16” lip to center standard. Optional strikes, T-strike or Full strike, lip and ANSI strike box available.

Exposed Trim
Wrought brass, bronze or stainless steel

Door Preparation
ANSI A115.2, through bolted installation

Cylinders & Keys
Standard 6-pin keyway with two patented nickel silver keys per lock

Master Keying
Can be master keyed or grand master keyed and construction key system available.

I/C Core
6 or 7 pin can be available in Best & Falcon keyways

Certification
UL Listed for “A” label, 3 hours fire rated. Single Swing door (4’x8’).

Standard Tested
ANSI A156.2 Series 4000 Grade 1.