No, there isn't a standard size for all toilet seats, due to a variety of toilet styles. There are key measurements that you will need, even though most seats are adjustable to fit the most common toilet bowl shapes. The measurements are: The distance between the fixing holes - where the screws are.
Are all toilet seat fixings the same?
Do all toilet seats fit the same? The simple answer is no, there are a range of different toilet seat fittings. Some are bottom fixing (fitted from beneath the fixing holes) and some are top fixing (usually required when there isn't access to the bottom of the pan, e.g. with a fully shrouded toilet).
What size are Kohler toilet seat bolts?
The plastic bolt has a 3/8-16" UNC thread pattern. Some Kohler one-piece toilets utilize an anchor to receive the toilet seat bolt because of the toilet design. The anchor can receive a 1/4-20" UNC bolt thread pattern.
How do you remove a no visible toilet seat bolt?
https://www.youtube.com/watch?v=ZGluderbMd4
How do you remove expansion bolts from toilet seat?
https://www.youtube.com/watch?v=mwi3pTvqc6U
How do you remove a rusted wing nut?
https://www.youtube.com/watch?v=KV6HbS-ko8o
How do you replace a toilet seat screw?
https://www.youtube.com/watch?v=vwlctDw5yK0
Can toilet seat hinges be replaced?
Once the pin is out, you can replace the old hinges with the new replacements. Place the pin back into the hinges and put the screws back on. Lastly, reattach the seat and cover on the bowl. Your toilet is ready for use.
How do you fix a stripped toilet seat screw?
Place the end of a putty knife against the screw at the bottom of the toilet, above the plastic nut. Tap the end of the putty knife with a hammer, digging the knife into the screw. Continue tapping until the putty knife cuts through the screw, then lift up the seat and screws.