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Pair of 2-1/4 inch solid brass door knobs in satin chrome finish with spindle

Progressive Hardware Co., Inc.

Progressive Hardware Co., Inc. 2600LP-26D Satin Chrome Door Lock

SKU CH-MNPG-J5WAX MPN 2600LP-26D

Solid brass door knob set with spindle fits Lockwood and Marks mortise locksets

  • FinishSatin Chrome
  • Solid brass construction resists wear for decades
  • Satin chrome finish matches modern and period hardware
  • 20 TPI spindle fits Lockwood and Marks mortise locksets
  • Supplied as a matched pair with hardened set screws
  • Trusted replacement knob specified for over 60 years

Solid brass knob pair for surface-mount mortise

This set includes two 2-1/4" diameter knobs made from solid brass with a satin chrome finish. It is designed as a direct replacement for Lockwood surface-mount mortise locksets and compatible Marks 91A and 71A models. The product has been a standard replacement choice for over 60 years.

Verify spindle thread

The supplied straight spindle measures 3-1/2" and uses a 20 TPI thread standard. Confirm that your existing mortise lockset accepts this thread pitch and spindle length. The hardware is intended for surface-mount installations only and will not suit tubular latch or cylindrical lock preparations.

Hardened set screws and matched spindle simplify

Case-hardened set screws are included to secure each knob firmly to the spindle, reducing the risk of loosening over time. The paired knobs and spindle are packed together in a single box, so no additional components are required to complete the replacement on a compatible lockset.

Highlights

  • Solid brass construction resists wear for decades
  • Satin chrome finish matches modern and period hardware
  • 20 TPI spindle fits Lockwood and Marks mortise locksets
  • Supplied as a matched pair with hardened set screws
  • Trusted replacement knob specified for over 60 years

Specifications

BrandProgressive Hardware Co., Inc.
Model2600LP-26D
FinishSatin Chrome

Questions about this item

What comes in the box and is the mortise lockset included?

The box contains one pair of 2-1/4" solid brass knobs with a 3-1/2" straight spindle and case-hardened set screws. The Lockwood or Marks mortise lockset is not included and must be purchased separately.

Which finish and spindle spec should I select for a Lockwood 91A or Marks 71A mortise lock?

Choose the 26D Satin Chrome finish with the standard 20 TPI spindle. This combination matches the threading and dimensions required for Lockwood 91A and Marks 71A surface-mount mortise locksets.

How does the 20 TPI spindle perform once installed in a period mortise lock?

The 20 threads-per-inch spindle engages the lock hub directly, providing a positive mechanical connection that has been the standard replacement for over 60 years in surface-mount mortise installations.

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