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Bright brass tubular deadbolt with captive key cylinder and thumbturn

Medeco

Medeco 11-R634-605-00 Bright Brass 605 Grade 1 Captive Key Tubular Deadbolt 2-3/4" Backset 1" Faceplate

SKU CH-F11Q-V2RR9 MPN 11-R634-605-00

Grade 1 tubular deadbolt with captive key cylinder, 6-pin tumbler, and anti-drill/anti-pry protection for doors 1-3/8" to 2-1/2" thick

  • Surface finishBright Brass
  • Sold asBox
  • Grade 1 security meets ANSI/BHMA A156.30 standard
  • UL437 listed cylinder resists drilling and picking
  • Captive thumbturn allows safe exit when occupied
  • 6-pin tumbler with Original 00 keyway controls duplication
  • Fits doors 1-3/8" to 2-1/2" thick with 2-3/4" backset

Medeco Maxum Grade 1 Deadbolt

The Medeco Maxum 11-R634-605-00 is a Grade 1 tubular deadbolt with a Bright Brass 605 finish designed for commercial and heavy-duty residential doors. It features a 6-pin tumbler cylinder and a captive thumbturn that converts between double-cylinder and thumbturn operation. The lock fits doors 1-3/8" to 2-1/2" thick with a 2-3/4" backset and 1" faceplate.

Sustained physical attack resistance

Solid brass construction combines with anti-drilling and anti-prying features to maintain integrity during prolonged forced-entry attempts. The cylinder meets ANSI/BHMA A156.30 and UL 437 listings for high-security performance. Triple locking action resists picking and unauthorized key duplication over the life of the installation.

Mechanical operation and installation

The captive key cylinder allows quick conversion to thumbturn mode for safe egress when the building is occupied. A 2-1/8" crossbore and 1" edge bore match standard door preparations for straightforward fitting. The 6-pin Original 00 keyway delivers consistent, smooth operation without electronic components or battery maintenance.

How it compares

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

Price $416.99
Pricier than about 91% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMedeco
Model name11-R634-605-00
Size & build
Surface finishBright Brass

Questions about this item

Does the captive thumbturn create any mechanical noise or heat when the deadbolt is operated repeatedly throughout the day?

The captive thumbturn is a purely mechanical component with no motor or electronic parts, so it produces no heat and only the normal audible click of the bolt engaging.

What door preparation must already exist for the 2-3/4" backset and 1" faceplate to install correctly?

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

Will the 6-pin tumbler cylinder with Original 00 keyway accept existing Medeco keys cut for the same keyway?

Yes, the cylinder uses the Medeco Original 00 keyway, so keys previously cut for that keyway will operate the lock without re-keying.

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