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Polished brass mortise cylinder 1-1/8 inch Yale YA1 keyway

Kaba Group

Kaba Group 7185YA1-03 1-1/8" Mortise Cylinder Door Lock Polished Brass Yale YA1

SKU CH-QKCT-9F5YP MPN 7185YA1-03

Solid brass mortise cylinder with Yale YA1 keyway, 1-1/8" length, standard cam and 1.150 x 32 UNS thread

  • Lock keyingKeyed Different
  • Surface finishPolished Brass
  • Sold asBox
  • Solid brass construction resists wear and corrosion
  • Polished brass US3 finish matches traditional hardware
  • 1-1/8" length fits standard mortise lock bodies
  • Yale YA1 keyway works with existing key systems
  • Standard cam #1 suits common lock mechanisms

Solid Brass Mortise Cylinder

The Kaba Group 7185YA1-03 is a 1-1/8 inch mortise cylinder machined from solid brass bar stock to OEM specifications. It uses a Yale YA1 keyway and a standard number one cam, making it a direct replacement for many existing mortise lock bodies. The cylinder is keyed different out of the box.

Polished Brass Finish and Threading

A US3 polished brass finish protects the solid brass body in both indoor and outdoor installations. The cylinder face measures 1.360 inches (34.5mm) in diameter and the threads are 1.150 x 32 UNS, matching common mortise lock preparations.

Five Pin Tumbler and Cam Compatibility

The five pin tumbler mechanism works with the supplied Yale YA1 keyway and accepts the standard cam included. Other compatible cams can be substituted if the application requires a different cam profile. Buyers who need a keyed alike set or a different keyway will need a separate cylinder.

How it compares

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

Price $23.99
Cheaper than about 67% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameIlco
Model name7185YA1-03
Size & build
Surface finishPolished Brass
More details
Lock keyingKeyed Different

Questions about this item

How do I install the 1.150 x 32 UNS mortise cylinder and which step is often missed?

Thread the 1-1/8" cylinder into the mortise lock until the 1.360" face seats flush, then tighten the set screw through the lock body to lock the Standard Cam #1 in place — skipping the set screw lets the cylinder spin.

What maintenance will the solid brass Yale YA1 cylinder need over time?

Lubricate the 5 pin tumbler mechanism annually with dry graphite powder; the polished brass finish can be cleaned with a soft cloth and brass polish if tarnish appears.

What is the first limitation that appears during heavy daily use of this mortise cylinder?

The 5 pin tumbler Yale YA1 keyway wears faster than the solid brass body, leading to key sticking or misalignment before the threads or cam show fatigue.

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