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Are There Universal Toilet Seat Bolts?

By Raised Toilet Seat Staff

If you’ve lost a bolt, stripped a thread, or watched your riser do the twist every time you sit down, you’re not alone.

But can you just walk into a hardware store and grab any toilet seat bolt to fix it?

Short answer: Yes… but also, no.
Here’s what you need to know about “universal” toilet seat bolts—and when they work (or don’t) for raised seats.

🔩 Standard Toilet Bolts: What They Are

Most standard toilet seat bolts:

  • Are about 2.5 inches long
  • Use nylon or stainless steel
  • Fit through the bowl’s rear mounting holes
  • Use a wingnut underneath to tighten

🛠 For regular seats, this works 99% of the time.

🚽 Raised Seat = Extra Layers

When you add a riser, the bolt now has to:

  • Pass through the bidet plate (if applicable)
  • Pass through the riser base
  • Still anchor securely to the bowl

If your bolt is too short, or the thread doesn’t match, you’re stuck with a wobbly mess.

✅ When Universal Bolts Do Work

  • You’re using a non-locking er with standard spacing
  • You’re not using a bidet between the riser and seat
  • The bolt is long enough (look for 3”+ bolt kits)
  • You use washers to ensure stability

Look for:

  • “Universal toilet seat bolts long”
  • “Raised toilet seat bolt kit”

🚫 When They Don’t Work

  • You have a riser with non-standard spacing
  • The riser requires a proprietary clip or bracket
  • You’re trying to install over a bidet base that shifts the alignment
  • Your toilet is elongated with deeper rear holes

💡 Nova’s Bolt Compatibility Checklist

  • Bolt length at least 3 inches?
  • Threads match your seat/riser insert?
  • Washer + nut included?
  • Can you tighten it without stripping plastic?
  • No risk of overtightening near porcelain?

🧠 Final Verdict

There’s no truly “one size fits all” bolt—but many options do fit most risers if you check the specs.

If all else fails, look up the exact riser brand and model.
Then go for the OEM bolt kit or a “universal extra-long bolt set.”

Need universal bolts or toilet seat hardware? Browse more solutions here.