BEST 9K Series Grade 1 Cylindrical Exit Lock with Non-Keyed Lever

BEST 9K Series Grade 1 Cylindrical Exit Lock with Non-Keyed Lever

Premium Commercial-Grade Cylindrical Lock Solution

The BEST 9K Series cylindrical lock delivers professional-grade security with Grade 1 BHMA certification for demanding commercial applications. This non-keyed exit lock features a 2-3/4" backset, 9/16" latch throw, and heavy-duty construction designed for 1-3/4" to 2-1/4" doors. Built with corrosion-treated steel chassis and brass components, the 9K Series combines exceptional durability with smooth operation for high-traffic environments.

Professional Features & Benefits

• Grade 1 BHMA Certification: Listed by BHMA for A156.2, Series 4000, Grade 1 providing the highest level of commercial lock performance and durability.
• Heavy-Duty Construction: Corrosion-treated steel chassis with brass latch components and zinc alloy lever handles engineered for demanding commercial use.
• Standard Door Compatibility: 2-3/4" backset with 9/16" latch throw designed for 1-3/4" to 2-1/4" door thickness with spacers available for 1-3/8" doors.
• Attack-Resistant Design: Rose locking pin and assembly design offers exceptional torque resistance, preventing twisting, bending, or breaking under attack while maintaining key access functionality.
• Through-Bolt Mounting: Strong through-bolt mounting studs with 5/16" diameter holes at 12 and 6 o'clock positions provide superior torque resistance and security.
• UL Fire Rating: Listed by Underwriters Laboratories for use on 3-hour A label single or double swinging doors for fire-rated applications.
• ADA Compliance: Design and operation meets ANSI A117.1 section 404.2.6 requirements for accessibility in commercial buildings.
• 10-Year Manufacturer Warranty: Comprehensive warranty coverage provides long-term protection and confidence in commercial installations.

Technical Specifications

• Backset (Distance): 2-3/4"
• Commercial/Residential: Commercial
• Department: Door Hardware
• Door Hand Direction: Non-Handed
• Duty Level: Heavy Duty
• Electronic: No
• Function Description: Latch operated by Rotating the inside lever. Inside lever is always unlocked and cannot be locked.
• Grade: Grade 1
• Handle Type: Lever
• Keyed: No
• Keyed Function: Non-Keyed
• Lock Function: Exit Only
• Lock Type: Cylindrical
• PDF:9K Series Catalog: https://zensupply.com/content/pdf/best/BA-0003_BEST_9K-Catalog-03-24.pdf
• PDF:Service Manual for 9K Series: https://zensupply.com/content/pdf/best/4418941408539
• Product Attribute: Cylindrical Locks
• Product Category: Mechanical Locks
• Product Function: Exit
• Product Group: Mechanical Locks
• Product Model: Y
• Product Subgroup: Bored Locksets
• Product Substrate: Corrosion-Treated Steel
• Product Type: Leversets
• Series: 9K Series
• Standard Latch: 9/16" Throw
• Standard Strike: 2-3/4" x 1-1/8" with curved lip and box
• Subcategory: Cylindrical Locks
• Warranty: 10 Year

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including 1-3/4" to 2-1/4" door thickness, 2-3/4" backset, and non-handed operation compatibility.
2. Use manufacturer-provided templates to mark mounting hole locations accurately including standard ANSI A115.2 preparation plus two additional 5/16" diameter through-bolt holes at 12 and 6 o'clock positions.
3. Prepare door by drilling required holes including 2-1/8" diameter chassis hole and routing as specified in manufacturer instructions. Use available drill jig for through-bolt hole accuracy.
4. Install all mounting hardware including through-bolt studs and secure the lock to door per manufacturer torque specifications for maximum attack resistance.
5. Adjust lever operation for smooth function and verify 9/16" latch throw engagement with strike plate alignment throughout full range of motion.
6. Test exit function to verify inside lever operation and proper latching. Install appropriate strike (STK, S3, or S3-7/8) based on door and frame requirements. 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

Anti-Microbial Option

The 9K Series is available with BEST UltraShield antimicrobial protected coating (finish 626AM) that inhibits the growth of bacteria and other microbes on hardware surfaces. This option is recommended for healthcare, elderly care, education, transportation, food service, and hospitality applications where product cleanliness is a high priority.

Why Choose BEST Quality?

BEST 9K Series cylindrical locks deliver professional-grade reliability with corrosion-treated steel construction and Grade 1 BHMA certification for the most demanding commercial applications. The 10-year manufacturer warranty and UL fire rating demonstrate BEST's commitment to quality and performance. Engineered with attack-resistant features and heavy-duty through-bolt mounting, the 9K Series provides dependable security where reliable operation is essential.