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Your cart is empty.Tuff Stuff 4425 9/32" X 5" Straight Square Spindle
Rodion Tseitlin
August 23, 2025
All of my doors are outfitted with Prime Line knob sets, all of those have suffered from spindles that are way too short and too thin to hold the set screw in place. Every single knob has come loose over the past year, depending on use. I got this spindle and immediately feel the difference for the better, the knobs are sitting nice, tight and snug; giving that sturdy feel to the door. So thanks to Tuff Stuff.
abdul wahab junagadhwala
August 4, 2025
perfect size and good quality
Catherine O.
July 28, 2025
I ordered a set of antique door knobs to replace the set that broke. I knew the spindle that came with the knobs wouldnt be the right size. This was the right length and thickness for my antique front door. I added a thin piece of Surgical Tape tonight to hold it exactly into place (because its an antique door and I was afraid it might be wobbly.).Its perfect. Exactly what I needed.I am going to order another one very soon to have a back up spindle. Thank you.
Atium Ping
July 19, 2025
We have a ~110 year old house and this fixed the one door where we installed new knobs from H.D. but their kit only came with a 3.5" long square shaft and the knobs would fall off because the set screws didn't have enough to grip. This 5" shaft threaded into the handles and the set screws tightened down great.
Southern Sol
July 18, 2025
I have been building barn-type doors with old style hardware. This was a great replacement for the old square spindle because the door mechanism was a surface mount type from the old days. I needed the extra length for the old type door knobs.
Kevin Wong
July 10, 2025
So happy to find this to fix the knobs on one of the doors in our house. It is good quality and works well
Sam B.
June 13, 2025
Keeps the bathroom door knobs on!
John R. Garcia, II
May 20, 2025
Like most folks, we realized the doorknobs were falling off because the spindles were too short. Old ones were 3.5†and these fixed the problem perfectly!
Jackie
December 19, 2024
If you have deeper than average doors the standard spindles provided with door handles/knobs might nigh be long enough. These are the ones you need
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