BEST 6K Series Grade 2 Passage Function Non-Keyed Cylindrical Knob Lock

BEST 6K Series Grade 2 Passage Function Non-Keyed Cylindrical Knob Lock

Professional Grade 2 Cylindrical Lock Solution

The BEST 6K Series Grade 2 cylindrical knob lock delivers reliable performance for standard traffic applications with passage function operation. This non-keyed knobset features a 2 1/16" diameter cylindrical case designed for 2 1/8" bore installation, with door thickness compatibility from 1 3/8" to 1 7/8". Built with brass and bronze component parts and internal steel mechanisms with corrosion treatment, this lockset exceeds ANSI Grade 2 standards and carries UL listing for 3-hour fire rating applications.

Professional Features & Benefits

• Door Compatibility: Accommodates door thickness from 1 3/8" to 1 7/8" with 2 1/8" diameter bore for standard installation requirements.
• Grade 2 Performance: Exceeds ANSI Grade 2 standards and BHMA A156.2 Series 4000 Grade 2 listing for reliable commercial performance.
• Durable Construction: Brass and bronze component parts with internal steel mechanisms featuring corrosion treatment for long-term reliability.
• Fire Rating Compliance: UL listed for use on 3-hour A label single doors (4' x 8') for code compliance applications.
• Quick Rekeying System: BEST interchangeable core allows rapid rekeying without lockset removal for enhanced security management.
• Concealed Mounting: Snap-on inside rose design eliminates exposed mounting screws for clean appearance and tamper resistance.
• Reversible Operation: Lockset reversible for either hand of door without removing keyed knob for installation flexibility.
• 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: Passage/Hall/Closet
• 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"), 2 1/8" diameter bore, and appropriate backset selection.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door surfaces for latch tube (1" or 7/8" diameter).
3. Prepare door by drilling required 2 1/8" diameter bore for lock housing and latch tube holes as specified in manufacturer instructions.
4. Install latch assembly and secure the cylindrical lock housing to door per manufacturer torque specifications with concealed mounting system.
5. Adjust threaded outside rose for proper door thickness and verify snap-on inside rose is properly seated with no exposed mounting screws.
6. Test lockset operation to verify proper function and smooth knob operation throughout the full range of motion. 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 with BHMA A156.2 Series 4000 Grade 2 certification for demanding commercial applications. Engineered for standard traffic applications where dependable passage function performance and quick rekeying capability are essential.