Are toilet seat fittings universal?

Your seat post holes should measure 5.5 inches, and, if they do, all standard toilet seats will fit your seat post holes regardless of shape.
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Are all toilet seat fittings 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).
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Are all toilet seat bolts the same size?

For your reference, the standard measurement for US toilet seat bolts is 5.5 inches. Measure the width of the bowl at its widest point. Be sure to place your measuring tape on the outside of the brim for an accurate dimension.
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Are toilets universal size?

Standard toilets will measure between 15 and 17 inches, while chair style toilets can be up to 17 inches. Toilet bowl shapes: Round toilet bowls take up less room than elongated bowls, which are usually up to three inches longer.
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Do toilets have different size holes?

Not every toilet requires the same size hole, and clearances also vary, but there is a standard size and placement that works for most models.
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How to fix a toilet seat with hidden fixings



How do I know what size toilet flange I need?

The most common and readily available toilet flange is the 4 x 3-inch size. This pipe is 4 inches wide at the top but only 3 inches wide at the bottom. The 3-inch bottom is the correct size for fitting the schedule 40 pipe most frequently used in home drains.
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What size bolts are used on toilet seat?

2-1/2" x 3/8" diameter bolts and nuts to fasten seat hinge to bowl. Made of tough nonrusting plastic material. Bolt head is 5/8" diameter. 2-7/8" diameter washers are included to adapt to seat hinges requiring larger bolt head.
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What size bolt holds a toilet seat on?

Most toilet seats require a 1/2-in. socket. The deep socket fits over the long bolt and grips the nut tightly. Most metal bolts aren't covered by a flip-open cover; all you have to do is turn the nut counterclockwise.
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Do all elongated toilet seats fit?

No, not all toilet seats fit the same because toilets come in a variety of different shapes, so you'll need to check yours before buying.
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Can I put an elongated toilet seat on a round toilet?

An elongated bidet seat will still mount on a round toilet, as well as function just fine, but the aesthetics and comfort of the seat will be greatly diminished.
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How do you tell if you have a round or elongated toilet?

Toilet seats are sold by shape (not by length).

You should, however, get exact measurements if you have a custom or non-standard toilet. If the length is between 18-19.5 inches, you have an elongated toilet bowl seat. If the length is between 17-17.75 inches, you have a round toilet bowl seat.
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Are all toilet seat hinges the same?

There are two main types of hinge fixings, top fixing and bottom fitting, and it is worth noting that not all hinges are suitable for all toilets. Bottom fixing toilet seat hinges feature a traditional style fixing which includes fitting two bolts down into your pan and then tightening them from underneath.
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Can you replace toilet seat hinges?

Over time, these hinges can break or wear out, requiring replacement. If your toilet seat hinges are broken or stripped out, you do NOT need to change the whole toilet seat, but instead only the hinges. With the right tools and spare parts, you can easily replace your toilet seat hinges.
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Are there different types of toilet seats?

There are 2 main types of toilet seat: standard close and soft close. Let's look at these in closer detail. A standard close toilet seat can be contemporary or traditional in style and can come in a variety of materials and finishes.
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Can you use metal bolts on a toilet seat?

Use these Toilet Seat Hinge Bolts as an easy alternative to replacing the entire toilet seat. Made from a solid metal construction, these bolts help provide strength and durability. Perfect for use on wooden seats.
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How do I remove rusted toilet seat bolts?

The best way to do this is by equipping a Dremel rotary tool with a cutting blade. Then, from the underside of the toilet, cut through the nut and bolt at a 45-degree angle. Once cut this way, you can easily pull the bolt out from the top. Use this Dremel equipped with a cutter blade to cut through rusted bolts.
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What size are toilet tank nuts?

The Everbilt brand 5/16” diameter by 2 1/4” length steel “T” toilet bowl bolts and nuts is both an excellent and handy plumbing item as well as a woodworking item.
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Are all toilet seals the same size?

Wax rings come in two diameters, 3 inches and 4 inches, because — as you might expect — those are the two standard sizes for toilet waste openings. Besides diameter, thickness is also an important parameter when it comes to wax rings. Again, there are two possibilities: regular and extra thick.
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Can you put a 3 inch flange in a 4 inch pipe?

Bought a standard 3inch and 4inch flange, both do not fit. 3 inch fits in loose, 4 inch sits right on top of the opening.
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How big around is a toilet flange?

The right flange size depends somewhat on your toilet and your piping. The most common type of flange actually has openings of both 3 and 4 inches in diameter. It is wider on the top than the bottom, which allows it to fit to wider toilet models.
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