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Satin chrome steel swivel spindle, square shaft with solid centre

Progressive Hardware Co., Inc.

Progressive Hardware Co., Inc. 45-20-C Door Lock Spindle 9/32" x 4-3/4" 20 TPI

SKU CH-G1BV-8J429 MPN 45-20-C

Steel swivel spindle with 9/32" square shaft and 20 threads per inch replaces Corbin Russwin #22 hardware

  • FinishSatin Chrome
  • Selling UnitBox
  • KeyingKeyed Different
  • Swivel spindle fits 3/8" hubs for smooth operation
  • 9/32" square by 4-3/4" long suits standard mortise locks
  • 20 TPI threading on both ends ensures secure knob attachment
  • Solid steel construction resists wear in high-traffic doors
  • Direct replacement for Corbin Russwin #22 simplifies hardware upgrades

Replacement Swivel Spindle

The Progressive 45-20-C is a steel swivel spindle built to replace Corbin Russwin #22 hardware. It fits mortise locks requiring a 9/32 inch square shaft and a solid center for 3/8 inch hubs. The 4-3/4 inch length suits standard door thicknesses in commercial and heavy residential installations. This new component restores two-sided lever operation without replacing the full lock body.

Threaded Interface Limits

Both ends carry 3/8-20 threads per inch, so the spindle only mates with matching threaded lever hubs. It will not engage unthreaded, set-screw or clip-on lever designs common on lighter residential locks. The 20 TPI pitch is fixed; cross-threading occurs if forced into metric or coarser threads. Swivel action compensates for minor door-to-frame misalignment but cannot correct severe warp or hinge sag.

Solid Center Fit

The single 3/8 inch solid center section is the decisive specification: the lock hubs must accept this exact diameter. If the existing hubs are drilled larger, smaller, or tapered, the spindle will not transmit torque and the levers will spin freely. Verify hub bore size before ordering; no adapter bushings are included.

Highlights

  • Swivel spindle fits 3/8" hubs for smooth operation
  • 9/32" square by 4-3/4" long suits standard mortise locks
  • 20 TPI threading on both ends ensures secure knob attachment
  • Solid steel construction resists wear in high-traffic doors
  • Direct replacement for Corbin Russwin #22 simplifies hardware upgrades

Specifications

BrandProgressive Hardware Co., Inc.
Model45-20-C
FinishSatin Chrome
Selling UnitBox
KeyingKeyed Different

Questions about this item

How do I pick the right spindle length and square size for my lock?

This spindle measures 9/32" square by 4-3/4" long, matching the Corbin Russwin #22 replacement specification exactly.

What does the 20 threads per inch rating tell me about fit?

The 3/8"-20 threading on both ends ensures the spindle engages securely with compatible lock hubs and hardware.

How does the solid center design affect the installation?

The one 3/8" solid center fits 3/8" hubs directly, providing a rigid connection for the swivel mechanism.

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