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Polished brass thumb turn knob disc, regular bar style

Progressive Hardware Co., Inc.

Progressive Hardware Co., Inc. 2651TK-W door lock thumb turn knob disc

SKU CH-J54D-G62SX MPN 2651TK-W

A solid brass thumb-turn disc with spring-loaded cam fits mortise deadlocks using a 16 mm square hub and secures via the cylinder locking screw

  • Surface finishPolished Brass
  • Polished brass finish resists tarnish and wear
  • Spring-loaded cam ensures smooth thumb-turn operation
  • Fits standard mortise deadlocks with regular bar style
  • 3/16" square hub matches common cylinder sizes

Mortise thumb turn knob disc

The Progressive Hardware 2651TK-W is a solid brass disc that operates a mortise deadlock through a 3/16" square hub. Its polished brass finish matches traditional door hardware and the regular bar style suits standard throw deadlocks. The spring loaded cam returns the knob automatically after each turn. It is supplied new and ready for installation.

Non-threaded cylinder mounting

The disc is not threaded and is secured by the cylinder locking screw already present in the lock body. This arrangement frees the installer from tapping or threading the knob itself and allows quick replacement without removing the cylinder. Buyers who need a threaded rose or a different hub size will need a separate component.

How it compares

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

Price $36.99
Cheaper than about 58% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameProgressive Hardware Co., Inc.
Model name2651TK-W
Size & build
Surface finishPolished Brass

Questions about this item

How deep is the 3/16" square hub engagement on the 2651TK-W?

The 2651TK-W uses a 3/16" square hub that seats fully into the mortise lock body; the spring-loaded cam keeps it seated during repeated deadlock throws.

Will the polished brass finish discolor from the heat of a door that gets full sun all day?

Polished brass on the 2651TK-W is solid material, not a thin coating, so prolonged solar heat will not cause peeling or flaking; surface may develop a natural patina over years.

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