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Pair of solid brass door knobs in polished brass finish with threaded spindle

Progressive Hardware Co., Inc.

Progressive Hardware Co., Inc. 2600LP Polished Brass Door Lock

SKU CH-CGX4-BG42G MPN 2600LP

Solid brass door knob set with threaded spindle fits Lockwood mortise locksets

  • Surface finishPolished Brass
  • Solid brass construction ensures lasting durability
  • Factory-pinned spindle simplifies installation on 1-3/4" doors
  • Threaded 3/8-18 TPI spindle provides secure fastening
  • Case-hardened set screws resist wear on interior knob
  • Packed as a complete pair for immediate fitting

Polished Brass Door Knob Set

The Progressive 2600LP is a solid brass knob set finished in polished brass US3. It is designed for Lockwood surface-mount mortise locksets and similar applications. Supplied as one pair per box, it suits residential and light-commercial doors requiring a traditional mortise lock trim.

Factory-Pinned Spindle Installation

Each knob arrives factory-pinned to the swivel spindle for a standard 1-3/4 inch door. The spindle carries two 3/8 inch centres and a 3/8-18 TPI thread. The inside knob secures with two case-hardened set screws, so a hex or Allen driver matching those screws is the only tool normally required.

Verify Mortise Lock Compatibility

Confirm the existing lock body is a Lockwood surface-mount mortise type or an equivalent that accepts a 3/8-18 threaded spindle with dual 3/8 inch centres. Check that the door thickness matches the factory-pinned 1-3/4 inch dimension, as the spindle length is not adjustable. Ensure the current trim uses the same spindle geometry before ordering.

How it compares

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

Price $42.99
Cheaper than about 55% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameProgressive Hardware Co., Inc.
Model name2600LP
Size & build
Surface finishPolished Brass

Questions about this item

How can I confirm the 2600LP knob set is working correctly after installation?

Turn each knob; the latch should retract smoothly and the spindle must rotate freely without binding.

What components are included with the 2600LP and what must I supply?

The box contains one pair of solid brass knobs with a factory-pinned 3/8-18 threaded spindle; you must provide the mortise lock body and mounting screws.

Which finish version of the 2600LP should I select for a polished brass look?

Choose the US3 Polished Brass finish listed in the product title; it is the only finish offered for this model.

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