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Satin chrome steel swivel spindle with two removable centers

Progressive Hardware Co., Inc.

Progressive Hardware Co., Inc. 45-20-R Door Lock Swivel Spindle 9/32" Square x 4-3/4" Long 20 TPI 3/8

SKU CH-QDVN-5Z6XQ MPN 45-20-R

Steel swivel spindle with two removable centers replaces surface-mount mortise locksets

  • Lock keyingKeyed Different
  • Surface finishSatin Chrome
  • Sold asBox
  • Steel construction resists wear during daily use
  • Swivel design allows smooth handle operation
  • Fits surface-mount mortise locksets directly
  • 9/32″ square by 4-3/4″ long dimensions
  • Two removable centres simplify installation

Replacement Swivel Spindle

This steel swivel spindle replaces worn parts on surface-mount mortise locksets. It measures 9/32" square by 4-3/4" long with a 3/8"-20 thread pitch and includes two removable centers for flexible installation. The satin chrome finish resists corrosion in daily use. Supplied new in a box and keyed different for standard security.

Thread And Fit Constraints

The 3/8"-20 threading only matches locksets cut to that exact pitch, so verify the existing hardware before ordering. The 9/32" square cross-section must align with the lock body and knob hub without modification. Two removable centres allow adjustment, yet the overall length remains fixed at 4-3/4" and cannot be shortened.

Square Dimension Decides Fit

The 9/32" square size is the single specification that determines whether this spindle engages the lock mechanism correctly. If the lockset requires a different square dimension or thread count, this part will not operate the latch. Match the original hardware precisely to avoid binding or free-play.

How it compares

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

Price $12.99
Cheaper than about 83% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameProgressive Hardware Co., Inc.
Model name45-20-R
Size & build
Surface finishSatin Chrome
More details
Lock keyingKeyed Different

Questions about this item

Which spindle size fits my mortise lockset?

The 9/32" square by 4-3/4" long steel swivel spindle with 3/8"-20 threading is made as a direct replacement for surface-mount mortise locksets.

What does the 20 threads-per-inch spec mean once installed?

The 20 TPI thread matches the original spindle pitch so the knob or lever engages securely without binding or play in the lock body.

How does the 3/8"-20 thread interface affect compatibility?

The 3/8" diameter with 20 threads per inch is the standard interface for surface-mount mortise locksets, ensuring the two removable centers align and operate correctly.

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