Advance Tabco
Advance Tabco FC-1-1818-X Wall Mounted Sink 18 in x 18 in, 304
- Silver
$790.99
0.00948475BTC
In stock
Tuff Stuff
Tuff Stuff 4620 Door Lock Spindle 9/32" Square x 2-5/8" Long 3/8"-20 TPI
Two-piece sectional steel spindle fits vintage knobs with 9/32" square by 2-5/8" length and 3/8"-20 threading
- FinishSatin Chrome
- Selling UnitBox
- KeyingKeyed Different
- Two-piece sectional design simplifies installation on vintage knobs
- 9/32" square shaft fits Corbin Russwin, Yale and Baldwin hardware
- 3/8"-20 TPI threading matches original spindle specifications
- Steel construction resists wear in high-traffic door applications
- Model 4620 replaces worn spindles without modifying existing locksets
Replacement Spindle for Vintage Knobs
The Tuff Stuff 4620 is a new two-piece sectional steel spindle made to replace worn or broken shafts in existing door hardware. It suits homeowners and locksmiths restoring Corbin Russwin, Yale, Marks, Norwalk, National, Baldwin or Tuff Stuff vintage knobs. The 9/32" square profile and 3/8"-20 TPI threading match the original specifications for these brands.
Sectional Design and Thread Constraints
Because the spindle splits into two sections, it fits doors where a solid bar cannot be inserted after the knobs are mounted. The 3/8"-20 thread pitch is fixed; it will not engage hardware cut to a different pitch or diameter. The 2-5/8" overall length sets the maximum door thickness this spindle can bridge without modification.
Upgrade from Damaged Original Shafts
This part replaces a snapped, stripped or corroded original spindle that prevents the latch from retracting. The jump is worth it when the knob rose and lock body are still sound but the connecting shaft has failed. It is not for buyers who need a longer spindle for thicker doors or a different thread standard for non-listed brands.
Highlights
- Two-piece sectional design simplifies installation on vintage knobs
- 9/32" square shaft fits Corbin Russwin, Yale and Baldwin hardware
- 3/8"-20 TPI threading matches original spindle specifications
- Steel construction resists wear in high-traffic door applications
- Model 4620 replaces worn spindles without modifying existing locksets
Specifications
| Brand | Tuff Stuff |
|---|---|
| Model | 4620 |
| Finish | Satin Chrome |
| Selling Unit | Box |
| Keying | Keyed Different |
Questions about this item
Which spindle length should I choose for a standard interior door?
This model 4620 measures 2-5/8 inches long with a 9/32 inch square section, matching many vintage knob sets.
What does the 9/32 inch square dimension mean once the spindle is installed?
The 9/32 inch square cross-section fits the square broach in period knobs and levers, transferring torque without rounding.
Will the 3/8 inch 20 TPI threading work with my existing knob roses?
The 3/8 inch diameter with 20 threads per inch matches Corbin Russwin, Yale, Marks and most vintage hardware threads.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
