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Satin chrome double cylinder deadbolt with captive thumb-turn key and interior keyway

Mul-T-Lock

Mul-T-Lock HDC-26-206 Satin Chrome Hercular Double Cylinder Captive Key Deadbolt

SKU CH-AKY4-GB21N

A high-security deadbolt with a captive-key design that switches between single and double-cylinder operation for flexible entry and exit control

  • Security gradeHeavy Duty
  • Grade1
  • Lock keyingKey Control
  • Surface finishSatin Chrome
  • Sold asBox
  • Product typeDeadbolts
  • Captive key lets you switch between single and double cylinder operation
  • Satin chrome finish resists corrosion and matches modern door hardware
  • Grade 1 heavy-duty rating meets the highest residential security standard
  • Interactive+ mechanism uses patented keys that require an order card for duplication
  • Double locking design adds a second cylinder barrier against forced entry

Captive Key Deadbolt Operation

The Mul-T-Lock HDC-26-206 is a Grade 1 heavy-duty deadbolt featuring a captive key mechanism. It serves residential and commercial doors requiring high-security access control. The Interactive+ 206 keyway provides patented key control requiring authorised dealer duplication.

Mechanical Operation Environment

As a purely mechanical lock, the unit generates no operational noise, draws no power and produces no heat during normal use. Performance depends solely on physical key insertion and cylinder rotation within the satin chrome housing.

Key Control And Conversion

The captive thumb-turn key locks into the inner cylinder for single-cylinder convenience and quick egress. Removing it via the inner key cylinder converts the lock to double-cylinder mode for enhanced security. The Interactive+ system restricts key duplication to authorised dealers presenting a key order card.

How it compares

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

Price $284.99
Pricier than about 90% of the 2,145 comparable items (median $55.99).

Specifications

Product
Product typeDeadbolts
Size & build
Surface finishSatin Chrome
More details
Security gradeHeavy Duty
Grade1
Lock keyingKey Control

Questions about this item

How do I install the captive thumb-turn key so it stays locked in the inner cylinder?

Insert the special key with the attached thumb turn into the central cylinder on the inside assembly; an internal piece locks the thumb turn in place, letting the lock operate as a single-cylinder deadbolt for keyless exit.

What maintenance will the Interactive+ 206 keyway need over time?

Keys are patented and can only be duplicated by presenting a key-order card to an authorised dealer, so plan to visit a dealer for any additional keys rather than cutting them locally.

What limit appears first when the deadbolt sees heavy daily use?

The lock is rated Grade 1 for heavy-duty security, indicating it meets the highest ANSI/BHMA cycle and strength requirements for residential and commercial deadbolts.

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