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Polished brass mortise cylinder lock, 1-1/8 inch size

Tuff Stuff

Tuff Stuff TSS218513 1-1/8" Mortise Door Lock

SKU CH-K7F2-8MASB MPN TSS218513

A polished-brass 1-1/8" mortise cylinder with five-pin tumbler, standard cam and re-keyable design for indoor or outdoor doors

  • Surface finishPolished Brass
  • Solid brass cylinder resists wear and corrosion
  • Polished brass US3 finish matches classic hardware
  • 1-1/8 inch size fits standard mortise lock bodies
  • Five-pin tumbler mechanism allows re-keying for access control
  • Standard cam design works with most mortise lock brands

Mortise Cylinder for Door Locks

The Tuff Stuff TSS218513 is a brass mortise solid cylinder built for indoor and outdoor door lock replacement. It suits homeowners and maintenance staff who need a direct-fit cylinder with a standard cam and five-pin tumbler mechanism. The lock comes keyed different and can be re-keyed to match existing key systems.

1-1/8 Inch Cylinder Length

The single specification that decides fit is the 1-1/8 inch cylinder size, which must match the door thickness and mortise pocket depth. The polished brass US3 finish resists corrosion on exterior doors while maintaining a traditional appearance. Different cam options are available separately if the standard cam does not suit the lock body.

Straightforward Cylinder Swap

Installation requires removing the old cylinder and threading this unit into the mortise lock body using the standard cam. The most common issue is ordering the wrong cylinder length for the door thickness, so measure the existing cylinder before purchase. Re-keying should be performed by a locksmith if matching to an existing key system is needed.

How it compares

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

Price $12.99
Cheaper than about 83% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameTechnical Security Series
Model nameTSS218513
Size & build
Surface finishPolished Brass

Questions about this item

What does the 1-1/8" size mean for my door installation?

The 1-1/8" measurement is the cylinder length; choose it when your door thickness and mortise pocket depth require exactly that length for the cam to engage the lock body correctly.

How does the standard cam limit or enable compatibility?

The included standard cam works with most common mortise lock bodies; if your lock uses an unconventional cam shape you can swap it because the cylinder accepts different cams.

What mounting preparation does the solid brass cylinder need?

It fits a standard mortise cut-out — simply thread the cylinder into the lock body, secure with the set screw, and ensure the cam aligns with the latch mechanism.

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