BEST 8T Series Double Cylinder Tubular Deadbolt with 1" Stainless Steel Throw

BEST 8T Series Double Cylinder Tubular Deadbolt with 1" Stainless Steel Throw

Premium Security Deadbolt for Commercial and Residential Applications

The BEST 8T Series Double Cylinder Tubular Deadbolt delivers enhanced security with a full 1" stainless steel throw bolt and attack-resistant design features. Built for standard door preparations with 1-3/4" door thickness, this deadbolt features solid extruded brass or bronze cylinder construction and free-turning, wrench-resistant tapered cylinder rings. UL listed for use as auxiliary lock on 3-hour fire doors, the 8T Series provides reliable security for commercial office spaces, residential applications, and healthcare facilities requiring enhanced protection.

Professional Features & Benefits

• Full 1" Stainless Steel Throw: Solid stainless steel deadbolt provides maximum security and corrosion resistance for long-term durability.
• Attack-Resistant Design: Free-turning, wrench-resistant tapered cylinder rings and optional hidden mounting screws enhance security against forced entry attempts.
• Premium Construction: Solid extruded brass or bronze cylinder with wrought brass or bronze trim ensures professional-grade durability and performance.
• Fire Door Compatibility: UL listed for use as auxiliary lock on 3-hour fire doors with C-UL mark for Canadian compliance standards.
• Interchangeable Core System: Compatible with existing BEST masterkeyed systems and permits instant, economical rekeying with original interchangeable core technology.
• Simple Installation: Self-aligning and reversible strike design simplifies installation while maintaining security performance.
• ADA Compliance: Includes ADA turn lever for accessibility compliance in commercial applications.
• Manufacturer Warranty: 3 Year warranty coverage for added confidence and protection.

Technical Specifications

• Faceplate: Brass or bronze; 8T2 - 1” x 2 1/4”; 8T3 - 1 1/8” x 2 1/4”
• Strikes: ANSI rectangular 1 1/8” x 2 3/4”; ANSI curved lip 1 1/4” x 4 7/8”;
  ANSI curved lip 1 1/8” x 2 3/4”; ANSI high security rectangular 1 1/4” x 4 7/8”
• Trim: Wrought brass or bronze; rose or turned lever rose; 2 3/4” diameter
  to cover 2 1/8” bore; machined brass or bronze cylinder ring
• Backset: 2 3/8” for 8T2; 2 3/4” for 8T3
• Deadbolt: 8T2 - 1” throw, 5/8” x 7/8”, brass nickel plated, concealed hardened
  steel free-turning pin; 8T3 – 1” throw, 5/8” x 7/8”, solid stainless steel
• Door thickness: 1 3/4” doors standard, other thicknesses available 

DOWNLOAD & RESOURCES

• T Series Sell Sheet
• T Series FAQs
• T Series Catalog
• T Series Green Circle Certificate
• BEST Product Warranty Reference Chart

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including 1-3/4" door thickness and standard bore dimensions for tubular deadbolt installation.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door surfaces for proper alignment.
3. Prepare door by drilling required holes per manufacturer specifications, ensuring proper backset dimensions (2-3/8" for 8T2 or 2-3/4" for 8T3 models).
4. Install deadbolt assembly and secure mounting hardware per manufacturer torque specifications, utilizing hidden mounting screws where applicable.
5. Install self-aligning and reversible strike plate in door frame, ensuring proper alignment with deadbolt throw.
6. Test deadbolt operation to verify smooth extension and retraction of the 1" stainless steel throw bolt 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 (including MRI and X-ray rooms)
• Retail Establishments
• Multi-Tenant Residential Properties
• Government and Municipal Buildings
• Industrial and Warehouse Facilities

Why Choose BEST Quality?

BEST 8T Series tubular deadbolts incorporate top quality design, engineering, and premium materials including solid stainless steel construction and extruded brass or bronze components. UL listed for 3-hour fire door applications with 3 Year warranty coverage, these deadbolts deliver the professional-grade reliability and security performance expected from BEST. Engineered for demanding commercial applications where dependable protection and long-term durability are essential.