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Polished brass keyed door chain guard lock, steel construction

Tuff Stuff

Tuff Stuff TUF55 Polished Brass Keyed Door Chain Guard Lock

SKU CH-6WQK-85GRH MPN TUF55

A keyed steel chain guard in polished brass secures exterior doors while allowing a view or ventilation

  • Surface finishPolished Brass
  • Keyed operation lets you control access from inside or out
  • Ilco IN8 keyway uses a common blank for easy replacement
  • Steel construction resists forced entry and corrosion
  • Brass-plated finish matches traditional door hardware
  • Mounting screws included for straightforward installation

Polished Brass Door Chain Guard

The Tuff Stuff TUF55 is a keyed door chain fastener designed for exterior residential doors. It allows the occupant to open the door partially for viewing or ventilation while the chain remains engaged. The lock operates from the interior using a key or by hand, offering flexible access control for houses or apartments. Mounting screws are supplied for immediate fitting.

Steel Construction For Sustained Use

Built from steel with a brass-plated finish, the unit resists corrosion during long-term exposure to weather and daily handling. The robust metal construction prevents door damage caused by forced entry attempts or repeated impact against the chain limit. This material choice supports reliable operation over extended periods without the degradation seen in lighter alloys.

Ilco IN8 Keyway And Simple Mounting

The cylinder accepts standard Ilco IN8 key blanks, simplifying key cutting or replacement at local locksmiths. Included mounting screws enable straightforward installation on typical timber or composite door frames without specialised tools. The polished brass finish maintains a traditional appearance that suits period or contemporary entrance hardware.

How it compares

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

Price $16.99
Cheaper than about 75% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameTuff Stuff
Model nameTUF55
Size & build
Surface finishPolished Brass

Questions about this item

Does the TUF55 chain lock produce any mechanical noise or heat when left engaged all day?

The TUF55 is a purely mechanical steel chain guard with a brass-plated finish; it has no motor, electronics or power draw, so it generates no heat and makes no sound beyond the click of the key or chain.

What mounting hardware must I already have to install the TUF55 door chain guard?

Mounting screws are included with the TUF55, so you only need a screwdriver and a drill with a suitable bit for the door material; no additional brackets or fasteners are required.

Will the Ilco IN8 keyway on the TUF55 work with the same key as my existing Ilco IN8 cylinders?

Yes, the TUF55 uses the standard Ilco IN8 keyway, so it can be keyed alike with any other lock that shares that key blank.

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