BEST 6K Series Patio Function Grade 2 Cylindrical Knob Lock

BEST 6K Series Patio Function Grade 2 Cylindrical Knob Lock

Professional Non-Keyed Knob Lock for Standard Traffic Applications

The BEST 6K Series Patio Function knob lock delivers Grade 2 performance for standard traffic commercial applications. This cylindrical knob lock features a 2 1/8" bore mounting system with 1/2" throw deadlocking latch and accommodates door thickness from 1 3/8" to 1 7/8". Built with brass and bronze components plus corrosion-treated internal steel mechanisms, this lockset exceeds ANSI Grade 2 standards and provides BHMA A156.2 Series 4000 compliance.

Professional Features & Benefits

• Door Compatibility: Designed for 1 3/8" to 1 7/8" door thickness with 2 1/8" diameter bore for versatile installation options.
• Grade 2 Performance: Exceeds ANSI Grade 2 standards and meets BHMA A156.2 Series 4000 requirements for reliable commercial use.
• Quick Rekeying System: BEST interchangeable core allows rapid key changes without lockset removal for enhanced security management.
• Durable Construction: Brass and bronze component parts with corrosion-treated internal steel mechanisms provide long-term reliability.
• 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.
• Fire Rating Compliance: UL Listed for use on 3-hour A label single doors up to 4' x 8' for code compliance applications.
• Deadlocking Security: 1/2" throw deadlocking latch with curved lip strike provides secure latching performance.

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: Patio/Privacy
• 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 between 1 3/8" and 1 7/8", 2 1/8" diameter bore, and handing as applicable to this product.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces including 1" diameter latch tube bore.
3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
4. Install threaded outside rose adjustable for door thickness and snap-on inside rose with concealed mounting screws per manufacturer torque specifications.
5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion with 1/2" throw deadlocking latch.
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 corrosion-treated internal mechanisms that exceed ANSI Grade 2 standards. UL Listed for 3-hour fire rating applications and BHMA certified for Series 4000 compliance, these locksets provide the dependable performance required for demanding commercial applications where long-term security and durability are essential.