We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Bright brass mortise cylinder lock, fifteen sixteenths inch, model 2122-03

Marks USA

Marks USA 2122-03 15/16" Brass Mortise Door Lock

SKU CH-RJAQ-Y5ZYZ MPN 2122-03

Solid brass mortise cylinder with five-pin tumbler, 15/16 inch length, re-keyable design and two keys included

  • Surface finishBright Brass
  • Sold asEach
  • Bright brass finish resists corrosion and matches traditional hardware
  • 15/16 inch solid brass cylinder fits most standard mortise locks
  • Five-pin tumbler mechanism provides reliable keyed-different security
  • Two keys included so the lock works straight from the box
  • Re-keyable design with interchangeable cam adapts to existing hardware

Solid Brass Mortise Cylinder

The Marks USA 2122-03 is a 15/16 inch solid brass mortise cylinder built for standard door installations. It uses a 5 pin tumbler mechanism and includes two keys for immediate use. The unit is keyed different and can be re-keyed to match existing hardware. It fits most mortise locks on the market for indoor or outdoor doors.

Sustained Operation And Rekeying

The brass construction resists corrosion during long term exposure to weather and daily operation. The 5 pin tumbler maintains consistent engagement over repeated locking cycles without jamming. Because the cylinder can be re-keyed, the lock stays serviceable when key control changes rather than requiring full replacement. Different cams can be swapped to match various mortise lock bodies.

Build Quality And Mounting Flexibility

Bright brass US3 finish provides a durable surface that withstands handling and environmental wear. The standard cam design allows direct installation into common mortise lock bodies without modification. Interchangeable cam compatibility means the same cylinder adapts to different lock brands or configurations. Solid brass body ensures structural integrity under torque from forced entry attempts.

How it compares

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

Price $33.99
Cheaper than about 59% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMarks
Model name2122-03
Size & build
Surface finishBright Brass

Questions about this item

Does the 5 pin tumbler cylinder generate any noise or heat during continuous daily use?

The brass mortise cylinder is a purely mechanical lock with no powered components, so it produces no operational noise, heat or power draw.

What existing door hardware must already be in place for this 15/16" cylinder to function?

A standard mortise lock body with a compatible cam slot is required; the cylinder fits most mortise locks on the market and works with different cams.

Will this US3 bright brass cylinder operate smoothly alongside older mortise lock bodies and existing key systems?

Yes, it fits standard mortise lock bodies, can be re-keyed to match existing keys and includes two new keys for immediate use.

More in Door Lock Sets & Deadbolts

Similar items