BEST 8K Series Dormitory Function Single Cylinder Grade 1 Heavy Duty Knob Lock

BEST 8K Series Dormitory Function Single Cylinder Grade 1 Heavy Duty Knob Lock

Premium Grade 1 Cylindrical Knob Lock for Heavy-Duty Commercial Applications

The BEST 8K Series delivers dependable security for high-traffic commercial environments with Grade 1 heavy-duty construction. This dormitory function single cylinder knob lock features knobs machined from solid brass or bronze bar stock with a 2 1/16" diameter chassis designed to fit 2 1/8" door holes. The 9/16" throw deadlocking latch provides reliable security, while the adjustable door thickness accommodation from 1 3/8" to 2" ensures versatile installation compatibility.

Professional Features & Benefits

• Grade 1 Heavy-Duty Construction: Exceeds ANSI Grade 1 requirements with knobs machined from solid brass or bronze bar stock for exceptional durability in high-traffic applications.
• Chassis Specifications: 2 1/16" diameter chassis fits standard 2 1/8" door holes with adjustable door thickness from 1 3/8" to 2" for versatile installation options.
• Deadlocking Latch System: 9/16" throw deadlocking latch with 2 1/4 x 1 1/8" beveled front provides reliable security and smooth operation.
• Enhanced Security Design: Keyed knob removable only after core removal, snap-on inside rose with no exposed screws, and no keeper hole on keyed knobs for added security protection.
• BEST Interchangeable Core System: Quick, economical rekeying with BEST interchangeable core technology and 7-pin housing that accepts all BEST cores (less SFIC core).
• Rotating Knob Face: Allows easy hand of door change without removing the knob, plus steel retractor with low friction bearings for smooth, wear-resistant operation.
• Optional Breakaway Protection: Available breakaway feature prevents the lockset from being overpowered by a wrench for vandal-resistant applications.
• Corrosion-Resistant Components: Internal parts are brass or corrosion-treated steel with brass or bronze roses reinforced with steel liner for long-term durability.

Technical Specifications

• Commercial/Residential: Commercial
• Department: Door Hardware
• Door Hand Direction: Non-Handed
• Duty Level: Heavy Duty
• Electronic: No
• Grade: Grade 1
• Handle Type: Knob
• Keyed: Yes
• Keyed Function: Single Cylinder
• Product Attribute: Cylindrical Locks
• Product Category: Mechanical Locks
• Product Function: Corridor/Dormitory
• Product Group: Mechanical Locks
• Product Subgroup: Bored Locksets
• Product Type: Knobsets
• Series: 8K Series
• Standard Cylinder: 7-pin housing, accepts all BEST cores (less SFIC core)
• Subcategory: Bored Locksets

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness (1 3/8" to 2" standard), 2 1/8" bore hole, and 1" latch hole dimensions.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper chassis and latch alignment.
3. Prepare door by drilling required 2 1/8" diameter hole for chassis and 1" hole in door edge for latch housing per manufacturer specifications.
4. Install chassis, latch assembly, and mounting hardware, securing the device to door per manufacturer torque specifications with threaded roses.
5. Adjust knob alignment and test rotating knob face functionality for proper hand of door operation and smooth movement throughout full range of motion.
6. Test lock operation with interchangeable core installed to verify proper function, deadlocking latch engagement, and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Government and Military Facilities
• Educational Institution Dormitories
• Commercial Office Buildings
• Healthcare Institutions
• Multi-Tenant Residential Properties
• Industrial and Warehouse Facilities
• High-Traffic Commercial Environments

Why Choose BEST Quality?

BEST 8K Series knob locks deliver professional-grade reliability with solid brass or bronze construction that exceeds ANSI Grade 1 requirements for demanding commercial applications. The premium workmanship includes corrosion-treated internal components and carefully designed features like steel retractors with low friction bearings for long-term performance. Engineered for high-traffic environments where dependable security and smooth operation are essential, backed by BEST’s proven track record in commercial door hardware solutions.