

🔐 Upgrade your door game with precision and durability!
The Tuff Stuff 4520 Swivel Square Spindle is a 4.75-inch long, 9/32" thick alloy steel replacement spindle featuring a 20 TPI thread and a secure stop pin. Designed for surface mount mortise locksets, it offers easy installation and reliable performance, making it the go-to choice for upgrading or repairing thicker doors with style and durability.
| ASIN | B071RY2THT |
| Assembled Diameter | 0.5 Inches |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #88,815 in Automotive ( See Top 100 in Automotive ) #4 in Automotive Replacement Spindles |
| Brand | Tuff Stuff |
| Color | Gray |
| Customer Reviews | 4.4 4.4 out of 5 stars (50) |
| Cutting Diameter | 0.5 Inches |
| Date First Available | May 8, 2017 |
| Exterior Finish | Stainless Steel |
| Finish | Polished |
| Hand Orientation | Ambidextrous |
| Handle Attachment Mechanism | Stop Pin |
| Handle Material | Alloy Steel |
| Included Components | Screw |
| Is Discontinued By Manufacturer | No |
| Item Depth | 4.75 inches |
| Item Weight | 1.58 ounces |
| Item model number | 4520 |
| Lock Type | Mortise Lock |
| Manufacturer | Tuff Stuff |
| Material | Alloy Steel |
| Metal Type | Alloy Steel |
| Number Of Pieces | 1 |
| Number of Items | 1 |
| Part Number | 4520 |
| Product Dimensions | 4.75"L x 0.5"W |
| Projection Distance | 4.75 Inches |
| Special Feature | Easy to Install |
| Special Features | Easy to Install |
| UPC | 608781045205 |
| Unit Count | 1.0 Count |
G**S
Works very well to install door lock on thicker doors
This is exactly what I needed for my mortise lock with skeleton key set. The door was a bit thicker than the standard, so I purchased this longer spindle and it works just as expected! Pleased with this purchase, and easy installation.
M**I
Just works
Have to replace every 8 years or so does the job saves me a locksmith fee
M**E
Good fit
Fixed my Lock....
A**N
Spindle for door knob replacement.
It was too long for my door.
E**E
Worked perfectly…
I didn’t even know what this item was called. I just submitted a photo of the broken item on the amazing Amazon app, and had a new one at my doorstep (and in my doorknob) the very next day!!!
A**R
Finally found it
Checked locksmiths in this town for years. Couldn't find anything even with the old "shaft" in hand. Looking for a split doorknob SHAFT online. Didn't know that it was actually a split SPINDLE! Looks like a shaft to me.
B**9
Worked exactly as expected
No issues encountered, 10 min install and the lock set was restored.
J**N
As described
As described
Trustpilot
1 week ago
1 month ago