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Progressive Hardware Co., Inc.

Progressive Hardware Co., Inc. 46-20-2-5/8 Door Lock Spindle 9/32" Square x 2-5/8" Long 3/8"-20 TPI Steel

SKU CH-DM6T-HXCGY MPN 46-20-2-5/8

A two-piece sectional steel spindle measuring 9/32 inch square by 2-5/8 inch long with 3/8-20 threads per inch, compatible with Corbin Russwin, Yale, Marks, Norwalk, National.

  • FinishSatin Chrome
  • Selling UnitBox
  • KeyingKeyed Different
  • Two-piece sectional design simplifies installation on vintage hardware
  • 9/32" square steel shaft fits Corbin Russwin, Yale and Baldwin knobs
  • 3/8"-20 TPI threading ensures secure engagement with lock mechanisms
  • Satin chrome finish resists corrosion for lasting appearance
  • Supplied new in a box, keyed different for individual door control

Replacement Steel Spindle for Vintage Knobs

This two-piece sectional spindle replaces worn originals on Corbin Russwin, Yale, Marks, Norwalk, National, Baldwin and Progressive hardware. The 9/32" square steel shaft measures 2-5/8" long and uses 3/8"-20 threads. It fits mortise locks that accept a split spindle design.

Satin Chrome Finish With Keyed Different Packaging

The satin chrome coating resists corrosion on the exposed ends. Each box contains a single spindle keyed differently, so multiple doors can operate independently. No additional screws, escutcheons or installation tools are included in the package.

Thread Standard Limits Compatibility To 3/8"-20

The 3/8"-20 thread pitch only engages lock bodies cut to that exact specification. Doors with metric threads, coarser Unified threads or solid one-piece spindles cannot use this part. Verify the lock body threading before ordering.

Highlights

  • Two-piece sectional design simplifies installation on vintage hardware
  • 9/32" square steel shaft fits Corbin Russwin, Yale and Baldwin knobs
  • 3/8"-20 TPI threading ensures secure engagement with lock mechanisms
  • Satin chrome finish resists corrosion for lasting appearance
  • Supplied new in a box, keyed different for individual door control

Specifications

BrandProgressive Hardware Co., Inc.
Model46-20-2-5/8
FinishSatin Chrome
Selling UnitBox
KeyingKeyed Different

Questions about this item

Will the 3/8"-20 threaded sections need periodic lubrication?

The steel threads on this two-piece sectional spindle do not require scheduled lubrication under normal residential use.

What fails first if the 9/32" square steel spindle is over-torqued daily?

The 3/8"-20 threads on the sectional halves will strip before the 9/32" square shaft yields.

Does the satin-chrome finish affect heat buildup during continuous lever operation?

The thin satin-chrome coating adds no measurable thermal resistance; the steel body dissipates hand-generated heat instantly.

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