TOTOTHU651N Top Mounting Seat Hardware for Toilet and Toilet Seat

these toilet bolts are the most secure way to stop the seat from roving around.I installed them on an American Standard toilet. The holes in the porcelain were 14 mm. diam- a tight fit but manageable with a water lubricantThe holes in the plastic hinges on the seat were too small - 10mm.- So I easily enlerged them to 14 mm with a drill and round file. Worked like a charm.

We purchased Water Ridge one-piece toilets from Costco. They are a good product at a great price but the seats on 2 of the 3 were driving me crazy. Constantly lose and off center, we were constantly tightening the bolts. Very annoying. This product--what genius! They only took about 5 minutes to install and we haven't had to make any adjustments since then! Snug and tight, like a toilet seat should be! I don't generally get excited about plumbing hardware but this item is just such a stroke of genius! (Yes genius! And I'll say it again!)

The item arrived promptly and well packed. I bought them on spec for a Pfister Kamato toilet .... and they fit! I'm sure they would be great for the Toto toilets they were designed for, too! The rubber piece is 63 mm. long; the top cylindrical part of the plug is 10 mm. long and 17 mm. in diameter. Each un-expanded ball is 18 mm. in diameter and 13 mm. long. There is 23 mm. between the ball centres. The stainless screw is 66 mm. long. Recommended.

I got so tired of having to tighten the bolts on the toilet seat every few days. As if cleaning a toilet wasn't bad enough. I installed these and have not had to tighten them since. A great solution to an aggravating problem. Highly recommended! I have a Toto toilet with a soft close seat so I can not say if these would work with other brands, but after installing them I can not see why they would not work with any toilet & seat.

I had to buy these to replace a previous set I accidentally allowed to get "sucked in" to my seamless Toto toilet so, when installing, just keep that in mind or you'll have to wait a few days to get another pair in ;)