BEST 6K Series Privacy Function Grade 2 Cylindrical Knob Lock

BEST 6K Series Privacy Function Grade 2 Cylindrical Knob Lock

Professional Privacy Lock Solution for Commercial Applications

The BEST 6K Series Privacy Function Cylindrical Knob Lock delivers Grade 2 performance for standard traffic commercial applications. This non-keyed privacy lock features a 2 1/8" diameter cylindrical case with 1/2" throw deadlocking latch and accommodates door thickness from 1 3/8" to 1 7/8". Built with brass and bronze components and internal steel mechanisms with corrosion treatment, this lockset exceeds ANSI Grade 2 standards for reliable long-term performance.

Professional Features & Benefits

• Door Thickness Compatibility: Standard installation for 1 3/8" to 1 7/8" door thickness with threaded outside rose adjustment for precise fit.
• Grade 2 Performance: Exceeds ANSI Grade 2 standards and BHMA A156.2 Series 4000 Grade 2 listing for commercial reliability.
• Durable Construction: Brass and bronze component parts with internal steel mechanisms featuring corrosion treatment for normal atmospheric conditions.
• Quick Core System: BEST interchangeable core allows rapid rekeying without lockset removal for flexible key management.
• Concealed Mounting: Snap-on inside rose design eliminates exposed mounting screws for clean professional appearance.
• Universal Installation: Lockset reversible for either hand of door without removing keyed knob for installation flexibility.
• Fire Rating Compliance: UL Listed for use on 3-hour A label single doors (4' x 8') for code compliance applications.
• Multiple Backset Options: Available in 2 3/8", 2 3/4", 3 3/4", and 5" backsets (62K, 63K, 64K, 65K Series) for various door configurations.

Technical Specifications

• Commercial/Residential: Commercial
• Department: Door Hardware
• Duty Level: Medium Duty
• Electronic: No
• Grade: Grade 2
• Handle Type: Knob
• Keyed: No
• Keyed Function: Non-Keyed
• Product Attribute: Cylindrical Locks
• Product Category: Mechanical Locks
• Product Function: Privacy/Bed/Bath
• Product Group: Mechanical Locks
• Product Subgroup: Bored Locksets
• Product Type: Knobsets
• Series: 6K Series
• Standard Latch: 1/2" Throw
• Standard Strike: 2-3/4" x 1-1/8" with Curved Lip
• Subcategory: Bored Locksets

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness (1 3/8" to 1 7/8" standard), backset selection, 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 (2 1/8" diameter bore for lock housing, 1" or 7/8" diameter for latch tube) 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 6K Series cylindrical locks deliver professional-grade reliability with brass and bronze construction and internal steel mechanisms rated to exceed ANSI Grade 2 standards. UL Listed for 3-hour fire rating applications and BHMA certified for commercial performance. Engineered for demanding commercial applications where dependable privacy function and long-term durability are essential.