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Bronze single cylinder deadlock with flat strike

Prime-Line

Prime-Line 667F Single Cylinder Deadlock Bronze US10

SKU CH-SHG1-MRB1W MPN 667F

Single-cylinder deadlock with shutter guard and hardened drill-point screws for tamper resistance

  • Surface finishAged Bronze
  • Jimmy-proof design resists forced entry with solid bronze alloy construction
  • Single cylinder operation uses SE1 keyway for convenient keyed access outside
  • Shutter guard blocks tampering if outer cylinder is compromised
  • Hardened drill-point screws withstand drilling attacks
  • Flat strike and recessed cylinder collar complete the secure installation

Single Cylinder Deadlock

The Prime-Line 667F is a single cylinder solid deadlock designed for residential entry doors. It provides a jimmy proof locking mechanism that resists forced entry attempts. The lock suits homeowners seeking a traditional key-operated deadbolt with a Bronze US10 finish. It is not suited for buyers who want keyless electronic access or a double cylinder function.

Bronze Alloy Construction

A solid high strength bronze alloy case and bolt deliver durability against physical attack. The 5 pin SE1 keyway cylinder is made from solid brass and includes a recessed cylinder collar. A shutter guard blocks tampering if the outer cylinder is compromised. The lock does not meet the needs of users who require a higher pin count or a restricted keyway system.

Flat Strike Installation

The included flat strike mounts on the door frame for standard latch engagement. Hardened drill point screws resist removal during forced entry attempts. No specific thermal, noise or power draw characteristics apply to this mechanical hardware. It is not intended for buyers who need an adjustable strike or a motorised locking bolt.

How it compares

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

Price $105.99
Pricier than about 67% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand namePRIME-LINE Segal Products
Model name667F
Size & build
Surface finishAged Bronze

Questions about this item

Will the flat strike on this 667F deadlock align with the mortise cut in my existing door frame?

The lock includes a solid bronze case bolt flat strike designed for standard mortise preparations; check your current strike pocket depth before installing.

How can I verify the shutter guard is engaged after fitting the lock?

With the door closed, turn the interior thumbturn — the bolt should extend fully and the outer cylinder collar remains recessed, showing the guard is active.

Does the box contain the SE1 keyway cylinder and all mounting hardware?

Yes — the package supplies a solid brass 5-pin SE1 cylinder, two keys, hardened drill-point screws and the flat strike; no extra parts are required.

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