does this fit kohler?

I’ve installed this on two Kohler toilets. But it wasn’t easy. The hole in the toilet body is small. So you can’t push the rubber part down through the top. But you can push the top of the rubber fitting up from underneath - with some effort and squishing of the rubber top flange to force it in the hole. Once seated, however, it fits well and it seems to holding everything nicely.

Does this not use the wing nut on the bottom of the toilet hole?

The rubber part has a threaded insert. When you tighten the top the rubber is expanded in the hole of the toilet to hold it in place. These worked well for my toilet seat, which wanted to always move from side to side.

Is it possible to use longer bolts with this in order to accommodate a luxe bidet and a handrail attachment? Might need extra length..

Yes you could but you don't need to. As long as the rubber part fits in the hole... all the bolt does is squeeze the rubber to make it expand inside the porcelain. It's a compression fitting.

Mine are not holding the lid into place. Am I supposed to keep tightening?

This is an expansion bolt, and can only expand to a certain point. If your hole diameter is > the fully tightened up bolt, then you will need a bolt with a greater diameter. So yes, keep turning the screw insuring that the entire black rubber expansion in not rotating while turning the screw

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4 Pack Toilet Seat Bolts, Hinge Bolt Screws Toilet Seat Fixings Fix Expanding Rubber Top Nuts Screws Mount Seat Hardware Replacement Parts Kit (for 14-16mm hole toilet seats)

Product ID: 70525798

Details

Brand
SelfTek
Color
Pack
Item dimensions L x W x H
1.57 x 0.39 x
Material
Rubber Steel
Size
One Size for

🔩4-pack durable bolts

🧽expanding rubber grip

🛠️rust-resistant stainless steel

R411

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Description

🚽 Upgrade your throne with bolts that mean business!

BUILT TO LAST - Stainless steel screws and brass nuts resist rust and corrosion, maintaining sleek functionality.
SECURE FIT EVERY TIME - Expanding rubber top nuts ensure a snug, wobble-free toilet seat for a premium feel.
EFFORTLESS INSTALLATION - Flexible rubber bungs slide in easily—no bottom tightening needed, saving you time and hassle.
UNIVERSAL COMPATIBILITY - Designed for 14-16mm hole toilet seats with top fix hinges, fitting most modern toilets seamlessly.
TRUSTED QUALITY SUPPORT - Backed by 24-hour responsive customer service and a 4.4-star rating from over 2,200 users.

The SelfTek 4 Pack Toilet Seat Bolts kit features rust-resistant stainless steel screws encased in expanding rubber nuts designed for 14-16mm hole toilet seats. This easy-installation hardware replacement ensures a stable, wobble-free seat with durable materials built to withstand moisture and daily use, backed by strong customer satisfaction and responsive support.

Specifications

ASIN	B078YSBS2S
Best Sellers Rank	#20,465 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #23 in Toilet Replacement Parts #118 in Toilet & Urinal Parts
Brand	SelfTek
Color	Style03-Rubber+Steel-4 Pack
Compatible Groove Diameter	0.55 inches
Customer Reviews	4.4 4.4 out of 5 stars (2,282)
Fastener Type	Bolt, Push, Round
Finish Types	Rubber
Item Diameter	0.67 inches
Item Dimensions	1.57 x 0.39 x 0.04 inches
Item Shape	Round
Item Weight	1.28 ounces
Manufacturer	SelfTek
Material Type	Rubber, Steel
Number Of Items	4
Number of Packs	1
Number of Pieces	4
Outside Diameter	0.67 inches
Part Number	SelfTek/397PHHO
Screw Head Style	Round
Set Name	Toilet Seat Fixing Kit (4 Pack)
Size Name	One Size for 14-16mm
Thread Size	M6
UPC	799355410915
Unit Count	4 Count

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R411

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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