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Pair of polished brass round door knobs with rose plates, thru-bolted assembly

Tuff Stuff

Tuff Stuff 3004 Polished Brass Knob Rose Kit

SKU CH-A19B-VEMJ9

Polished brass knob and rose kit with 9/32" spindle for thru-bolted mortise locks on 1-3/4" doors

  • Security gradeHeavy Duty
  • Surface finishPolished Brass
  • Sold asPair
  • Product typeDoor Knob
  • Polished Brass US3 finish resists corrosion on gates
  • Thru-bolted mounting fits Marks 22AC and Maxtech LKMT1033D mortise locks
  • 9/32" square spindle operates smoothly through heavy doors
  • Spring-loaded spindle centres knob automatically after each use
  • Pair includes knobs, roses and screws for 1-3/4" doors

Replacement Kit for Thru-Bolted Mortise Locks

This polished brass knob and rose kit fits thru-bolted ornamental iron gate doors and mortise lock sets. It is designed as a direct replacement for hardware such as the Marks 22AC and compatible Maxtech LKMT1033D models. The set includes both interior and exterior knobs for a complete installation.

Pre-Assembled Components and Included Fasteners

Each knob and rose arrive pre-assembled, reducing the number of separate pieces to handle on site. The package supplies mounting screws sized for both 1-3/8 inch and 1-3/4 inch door thicknesses. A spring-loaded 9/32 inch square spindle is fitted to operate the latch mechanism.

Constraints of Thru-Bolt Mounting and Spindle Size

The thru-bolt mounting pattern requires alignment with existing door prep and lock body holes; it will not suit surface-mounted or single-sided rose fixtures. The 9/32 inch square spindle limits compatibility to locks cut for that specific dimension. Buyers needing a different spindle size or a non-thru-bolted rose design cannot use this kit.

How it compares

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

Price $20.99
Cheaper than about 69% of the 2,145 comparable items (median $55.99).

Specifications

Product
Product typeDoor Knob
Size & build
Surface finishPolished Brass
More details
Security gradeHeavy Duty

Questions about this item

Will the 9/32" square spindle need periodic replacement?

The spindle is integral to the spring-loaded assembly and designed for heavy-duty use; no separate spindle replacement schedule is indicated.

What is the first limitation under continuous daily operation?

The kit is rated heavy duty and built for thru-bolted mortise locks, so the limiting factor will be the host lock mechanism rather than the knob or rose.

Does the polished brass finish generate heat or noise during all-day use?

Polished brass is a passive material; the knob and rose produce no heat or noise during normal operation.

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