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Bright brass tubular deadbolt with captive thumbturn cylinder

Medeco

Medeco 11-R633-605-00 Bright Brass 605 Grade 1 door lock

SKU CH-53XX-GQ9Y6 MPN 11-R633-605-00

Grade 1 tubular deadbolt with captive key cylinder, 6-pin tumbler, anti-drill and anti-pry protection, and convertible thumbturn for occupied or unoccupied security

  • Surface finishBright Brass
  • Sold asBox
  • Grade 1 certification delivers maximum physical security
  • Six-pin tumbler cylinder resists picking and unauthorised key duplication
  • Captive thumbturn allows safe egress when occupied and double-cylinder security when vacant
  • Bright brass 605 finish provides corrosion resistance and residential aesthetics
  • ANSI/BHMA A156.30 and UL 437 listings confirm high-security performance

High-security Grade 1 deadbolt

The Medeco Maxum 11-R633-605-00 is a Grade 1 tubular deadbolt built for commercial and heavy-duty residential doors. It uses a six-pin tumbler cylinder with the original 00 keyway to deliver triple-locking resistance against picking and unauthorised key duplication. The captive thumbturn converts the inside cylinder for safe egress when occupied and reverts to double-cylinder security when vacant. Bright brass finish and solid-brass construction add anti-drill and anti-pry protection.

Captive thumbturn and ANSI/BHMA compliance

Installation requires a 2-1/8" crossbore and a 1" edge bore on doors 1-3/8" to 2-1/2" thick with a 2-3/8" backset and 1" faceplate. The captive thumbturn mechanism frees occupants from needing a key to exit during occupied hours while restoring keyed security on both sides when the building is empty. Cylinders carry ANSI/BHMA A156.30 and UL 437 listings, confirming high-security performance for apartments, retail outlets and similar settings.

Solid brass resists physical attack

All-metal brass components withstand drilling, prying and forced-entry attempts without electronic parts that could fail. Mechanical operation means no power draw, no fan noise and no thermal load under any conditions. The lock maintains consistent function through temperature swings and humidity typical of interior and exterior door installations.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $402.99
Pricier than about 91% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMedeco
Model name11-R633-605-00
Size & build
Surface finishBright Brass

Questions about this item

How does the captive thumbturn handle extended daily locking and unlocking cycles?

The captive thumbturn converts the inside cylinder to a thumbturn for safe exit when the facility is occupied and quickly reverts to double-cylinder mode to guard against unauthorised entry or exit when unoccupied.

What is the heat or power behaviour of this mechanical deadbolt during continuous operation?

As a purely mechanical lock, it generates no heat and draws no power during all-day use.

Which door preparations must already exist for this deadbolt to install correctly?

The door needs a 2-1/8" crossbore, a 1" edge bore, a 2-3/8" backset and a thickness between 1-3/8" and 2-1/2" to match the 1" faceplate.

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