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Bronze surface-mounted rim deadlock with key cylinder and thumb turn

Guard Security

Guard Security 505 Surface Mounted Rim Deadlock 1" Bolt Bronze Finish

SKU CH-E1GY-4B6P8

Surface-mounted rim deadlock with a solid brass cylinder, hardened steel revolving bolt and thumb-turn operation

  • Sold asEach
  • Product typeDeadbolts
  • Solid brass cylinder resists wear and corrosion
  • Hardened steel revolving bolt prevents sawing attacks
  • Die-cast alloy case provides durable construction
  • Key operation from outside secures entry
  • Thumb turn inside allows quick exit

Surface-Mounted Rim Deadlock

The Guard Security 505 is a surface-mounted rim deadlock designed for residential or light-commercial doors. It installs on the face of the door rather than requiring a mortise pocket, making it suitable for retrofit projects where door thickness or existing hardware prevents a traditional cutout. Buyers who need a mortise-style lock or a multi-point locking system will not be served by this rim-mounted design.

Mechanical Operation Limits

The lock operates with a single 1" throw bolt that extends from the case when engaged. Outside access is by key only, while inside operation uses a thumb turn, so the door cannot be deadlocked from the exterior without a key. The hardened steel bolt revolves to resist sawing attempts, but the unit provides no latch function and cannot be operated by handle or lever from either side.

1" Hardened Steel Bolt Throw

The decisive specification is the 1" bolt throw constructed from hardened revolving steel, which is engineered to defeat sawing attacks. The bolt engages directly into a surface-mounted strike on the door frame, so the security of the installation depends on the frame material and screw fixing quality rather than on the lock body alone.

How it compares

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

Price $15.99
Cheaper than about 77% of the 2,145 comparable items (median $55.99).

Specifications

Product
Product typeDeadbolts

Questions about this item

Which Guard Security 505 deadlock variant should I pick for a standard external door?

The 505 model is a single specification: surface-mounted rim deadlock with a 1-inch bolt, bronze finish, solid brass cylinder and hardened steel revolving bolt. No alternative versions or capacities are offered.

How does the 1-inch bolt perform when the lock is fitted to a timber door?

The 1-inch throw engages the strike plate fully; the hardened steel revolving bolt resists sawing while the solid brass cylinder provides smooth key operation from outside and thumb-turn release from inside.

What fixing standard does the surface-mounted rim design follow and what does it limit?

The rim pattern mounts on the door face with screws through the die-cast alloy case, so it suits doors where mortising is impractical but requires a flat surface and visible hardware on the interior side.

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