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Mechanical Locks

8K Cylindrical Series


This Grade 1 heavy-duty cylindrical lock provides the security you count on from BEST. Unlike other cylindrical knob sets that are made from weaker metals, the BEST 8K Series is constructed of steel or brass to ensure the overall strength and durability of the lock. Plus, the knob itself is a single-machined unit instead of being formed from multiple parts and then pressed and joined into a single unit to provide more structural integrity and greater resistance against wear-and-tear. The 8K Series, which offers quick, economical rekeying with the BEST original interchangeable core, is commonly used in government and military facilities.

Mechanical Locks


No Keeper Hole

Requires no keeper hole on keyed knobs for added security.

Breakaway Feature Option

Prevent the lock from being overpowered by a wrench.

Lead Lined Options

Allowing for radioactive doors (MRI, x-ray, etc.).

Tactile or Knurled Knob

Allowing for blind, safety and accessibility applications.

Long Bearing Length

Smooth and wear resistant operation.

The BEST solutions for your industry

Where it Works


Safeguard high-traffic government and military buildings with the 8K’s superior single-machined durability and high-security features to prevent tampering and attack.


Protect medical personel and ensure accessibility for patients with the 8K’s specialized knobs.


Bright Brass Finish Swatch 605 605: Bright Brass
606: Satin Brass
Satin Bronze Finish Swatch 612 612: Satin Bronze
Oil-Rubbed Bronze Finish Swatch 613 613: Oil-Rubbed Bronze
Bright Chrome Finish Swatch 625 625: Bright Chrome
Satin Chrome Finish Swatch 626 626: Satin Chrome
Dark Bronze Coated Finish Swatch 690 690: Dark Bronze Coated

UltraShield™ antimicrobial coating available

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