ABK-6 turn dead lock

The ABK-6 Turn Dead Lock represents the pinnacle of mechanical rim lock security. It is engineered for applications where standard single-turn and three-turn locks provide insufficient protection against determined intrusion attempts.

This ABK-6 turn dead lock requires six complete key revolutions—a full 2160 degrees of rotation—to fully extend or retract its massive 30mm hardened steel deadbolt. This extended mechanical sequence provides unprecedented resistance against lock manipulation, picking, bumping, and impression  techniques.

ABK-6 turn dead lock  also delivers exceptional mechanical advantage to overcome seized or misaligned door conditions.

Constructed from reinforced zinc alloy with an internally armored case, this lock is the definitive surface-mounted security solution for high-value asset protection, commercial storage, government facilities, museum collections, and residential properties requiring maximum perimeter defense.

Each ABK-6 turn dead lock undergoes individual factory torque testing and precision calibration to ensure smooth six-turn operation across decades of daily use.

When standard locks are insufficient, this lock establishes a new baseline for mechanical door security.

ABK-6 turn dead lock

What Makes the 6-Turn Mechanism Significantly More Secure?

The six-turn requirement is not merely an incremental change from three-turn models. It represents an exponential increase in operational complexity for unauthorized entry attempts.

Each of the six full key rotations engages the lock mechanism through 2160 degrees of cumulative movement. ABK-6 turn dead lock creates over 20 times the mechanical work requirement compared to a standard quarter-turn rim latch.

For ABK-6 turn dead lock picking attacks, the extended rotation means the picker must maintain perfect tension and pin manipulation through six complete plug rotations. This is a task of extraordinary difficulty even for experienced practitioners.

For bump key attacks, the six-turn lock requires six consecutive successful bump impacts. Each is separated by full key extraction and reinsertion. This is statistically improbable within practical time constraints.

The psychological deterrent effect is equally significant. The deliberate, extended winding sequence audibly signals robust security and discourages casual intrusion attempts.

What Are the Critical Component Specifications?

This ABK-6 turn dead lock is specified with significant material and dimensional upgrades compared to standard rim locks.

The deadbolt is precision-machined from through-hardened 4140 chromoly steel. It achieves 52-56 HRC case hardness with a tough, ductile core. The bolt measures 30mm in projection—20% longer than the ABK-3 model—providing deeper frame engagement and substantially increased jimmy resistance.

The ABK-6 turn dead lock case is constructed from reinforced Zamak 5 zinc alloy. It contains higher copper and magnesium content than standard Zamak 3, delivering 15% greater tensile strength and impact resistance.

The drive train incorporates six individual cam followers riding on oil-impregnated sintered bronze bushings. It is engineered for 100,000+ operational cycles without measurable wear.

The cylinder employs 6-pin tumbler technology with serrated and mushroom driver pins. These are specifically configured to defeat lock picking and raking attacks.

How Does the ABK-6 Compare to ABK-3 for Security Applications?

This ABK-6 turn dead lock is specifically engineered for high-risk applications where the ABK-3 provides baseline security but may be vulnerable to sustained attack.

Comparative security assessment reveals three distinct advantages. First, the six-turn requirement increases manipulation time by approximately 400% against skilled lock picking attacks.

Second, the 30mm chromoly deadbolt provides 5mm additional frame penetration. This substantially increases resistance to physical spreading attacks.

Third, this ABK-6 turn dead lock features a fully reinforced strike box with a 2mm thick hardened steel liner. This component is not included in standard ABK-3 configurations.

For residential perimeter doors, home offices housing valuables, firearms storage rooms, and commercial rear entries in high-crime areas, this lock provides definitive mechanical security.

The ABK-3 remains appropriate for general purpose interior security, garden gates, and low-to-moderate risk applications.

Is the ABK-6 Suitable for Fire Escape Doors and Egress Paths?

Critical consideration: This lock is NOT certified for use on fire escape doors, emergency exits, or any egress path requiring tool-free immediate interior release.

This ABK-6 turn dead lock is key-operated from both exterior and interior faces. There is no thumb-turn or lever handle for rapid egress. In emergency conditions, locating the key and performing six full rotations to retract the deadbolt presents an unacceptable delay for life safety applications.

This lock is designed exclusively for security applications where emergency egress is not required. These include secure storage rooms, armories, evidence lockers, vault ante-rooms, and perimeter gates with alternative exits.

For applications requiring both security and egress, consider the ABK-3 with interior thumb-turn option, or consult local building codes for compliant security hardware.

What Attack Resistance Testing Has Been Conducted?

This ABK-6 turn dead lock has undergone extensive third-party physical attack testing.

Against drill attacks, the cylinder incorporates dual hardened steel rotating discs and two stationary anti-drill pins positioned directly in the path of common drill bit diameters. Testing confirms this configuration successfully spalls or shatters high-speed steel and carbide-tipped drill bits under 3/16″ diameter.

Against prying attacks, the concealed mounting screws and overlapping case design prevented successful jimmy insertion in 92% of attempts during standardized physical penetration testing.

The 30mm deadbolt withstood 1,200 lbs of spreading force applied between door and frame before bolt shear occurred. This exceeds ANSI/BHMA Grade 1 requirements by 40%.

While no mechanical lock is impervious to unlimited time and tools, this lock consistently delays intrusion attempts beyond the practical threshold for most opportunistic and semi-skilled attackers.

What Finish Options and Corrosion Protection Are Available?

This ABK-6 turn dead lock is offered in a curated selection of architectural finishes engineered for maximum durability.

The Stainless Steel Satin finish features a Type 304 stainless steel cover plate with brushed grain. It provides superior corrosion resistance for coastal and high-humidity environments.

The Black Armor finish utilizes a multi-stage zinc phosphate base with thermoset polyester powder topcoat, cured at 400°F for maximum adhesion and chip resistance.

This ABK-6 turn dead lock  is also available in Polished Brass and Oil-Rubbed Bronze for heritage and decorative applications. Each is protected by a clear epoxy topcoat rated for 500+ cycles of ASTM B117 salt spray testing.

All finishes include UV-stable pigments formulated to resist fading, chalking, and color shift during prolonged sunlight exposure.

What Keying and Master Keying Options Exist?

This lock cylinder accepts industry-standard 6-pin rim cylinder configurations. It is compatible with most major locksmith key systems.

Each lock ships standard with three precision-milled nickel silver keys cut to a randomized, non-progressive bitting pattern.

For commercial and institutional applications, this lock can be factory-ordered keyed-alike, keyed-different, or master keyed. It is also available in Small Format Interchangeable Core configuration for facilities requiring rapid rekeying without cylinder removal.

Consult authorized ABK distributors for custom keying schedules and construction keying requirements prior to order placement.

What Installation Considerations Are Unique to the ABK-6?

The reinforced construction and six-turn mechanism require specific installation considerations beyond standard rim locks.

Due to the extended rotational travel of the drive train, the cylinder cam must achieve full clearance within the door thickness. Doors thinner than 40mm may not provide sufficient depth for complete cam rotation. Installers should verify door thickness compatibility prior to purchase.

This lock also requires a minimum door stile width of 120mm to accommodate the larger lock case footprint.

For retrofit installations, it includes a universal mounting template with alignment references for both 50mm and 60mm backset configurations.

Professional locksmith installation is strongly recommended, particularly on period doors, non-standard dimensions, or when integrating with existing master key systems.