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Polished brass mortise turn knob cylinder, 1-1/4 inch length, thumb turn only

Kaba Group

Kaba Group 7201TK2-03 Polished Brass 1-1/4" Mortise Turn Knob Cylinder Door Lock

SKU CH-5K2K-QMTRJ MPN 7201TK2-03

Solid brass mortise turn-knob cylinder with a thumb turn and no key, Adams Rite cam, 1.150 x 32 UNS thread and 1.360 inch face diameter

  • FinishPolished Brass
  • Selling UnitBox
  • KeyingKeyed Different
  • Solid brass construction resists wear and corrosion
  • US3 polished brass finish suits traditional and modern doors
  • 1-1/4 inch length fits standard mortise lock preparations
  • Adams Rite cam #2 aligns with common hardware
  • Thumb-turn operation provides keyless egress from inside

Solid Brass Mortise Turn Knob Cylinder

The Ilco 7201TK2-03 is a solid brass mortise turn knob cylinder finished in US3 polished brass. It measures 1-1/4 inches in length and uses a 1.150 x 32 UNS thread with a 1.360 inch (34.5 mm) cylinder face diameter. This replacement unit suits interior or exterior doors requiring a thumb-turn mechanism without a keyed exterior.

Mechanical Operation and Durability

Precision machining from solid brass bar stock provides consistent alignment and smooth rotation during daily use. The five-pin tumbler mechanism engages cleanly with the Adams Rite #2 cam to retract the latchbolt. Brass construction resists corrosion on exterior installations and requires no lubrication under normal conditions.

Installation Fit and Cam Compatibility

The cylinder threads directly into mortise lock bodies cut for the 1.150 x 32 UNS standard, while the 1.360 inch face seats flush against the door surface. Adams Rite #2 cam is fitted; other cam styles can be substituted if the lock body demands a different tailpiece configuration. Each box contains a single cylinder keyed differently from any other unit.

Highlights

  • Solid brass construction resists wear and corrosion
  • US3 polished brass finish suits traditional and modern doors
  • 1-1/4 inch length fits standard mortise lock preparations
  • Adams Rite cam #2 aligns with common hardware
  • Thumb-turn operation provides keyless egress from inside

Specifications

BrandIlco
Model7201TK2-03
FinishPolished Brass
Selling UnitBox
KeyingKeyed Different

Questions about this item

How do I install the 1-1/4" mortise cylinder with 1.150 x 32 UNS threads?

Thread the cylinder into the mortise lock body until the 1.360" face seats flush; the step often missed is aligning the Adams Rite Cam #2 with the lock's cam slot before tightening the set screw.

What maintenance will the solid brass cylinder and 5-pin tumbler need over time?

Apply a dry graphite lubricant to the keyway annually; avoid oil-based sprays that attract grit and can gum up the five pin chambers.

What is the first limit that appears when the thumb turn is operated repeatedly on a heavy door?

The Adams Rite Cam #2 interface between the turn knob and the lock body will show binding or wear before the solid brass cylinder body does.

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