Slotted or unslotted — get this wrong and it leaks · review
A brass pop-up bolt assembly with M8 and M16 x 1.5 threads, for replacing a click-clack mechanism.
This shelf sells three different things, and the titles do not make it obvious.
Complete assemblies — the whole body, tailpiece and stopper. The Kraus at $34.95 and the Kohler at $99.99.
Plug tops — the visible cap, with no mechanism inside. The FASTROHY at $9.66 and the Tong Gu at $7.99.
Pop-up bolts — the spring mechanism and its threaded bolt, with no cap. This at $7.79 and the ALI2 at $9.99.
So before buying anything here: work out which half broke.
Push the cap down. If it goes down and stays, or bounces back without latching, the mechanism has failed and this is the part. If the cap is cracked or the chrome is lifting, the cap has failed and you want a plug top.
They unscrew from one another at an M8 thread.
Popped up 1.52 in (38.5 mm). Closed 1.1 in (28 mm). Overall 2.3 in (58.3 mm).
That matters because the bolt has to finish level with the ceramic. Too short and the cap sits below the sink surface with water standing round it; too long and it stands proud and never seals.
The drain body is already in your sink. The bolt screws into it. Measure the old one and compare these three numbers — it is the only specification on a part like this that cannot be guessed.
The ALI2 on this shelf publishes the closed height alone, which happens to match at 1.10 in (28 mm). The other four listings publish none.
Which is the standard pairing, and it is good news.
All four of the cheap parts on this shelf are on M8 at the top: this, the ALI2, and both plug tops. Which means a FASTROHY or Tong Gu cap screws onto this bolt.
So the repair can be done either half at a time, or both for under twenty dollars, from any combination on this shelf.
The bullets say brass; the maker’s own specification list says copper.
Brass is a copper alloy, so this is loose language rather than a contradiction. What the word is actually doing is separating this from zinc alloy — which is what the FASTROHY cap on this shelf is made of, and which pits far faster in permanently wet conditions.
A bolt that sits in standing water wants brass. Three of the four cheap parts here say brass; one says zinc.
It is supplied in gold.
The bolt is normally concealed under the cap, so that is usually irrelevant. If your cap is chrome and does not quite cover the shoulder of the bolt, it will show.
Available at around $7.79 on Amazon.com when we checked on October 29, 2026, for delivery to a US address.
Stock and prices on Amazon.com move without notice; the button above opens the live listing.
Prices quoted in this text were read on October 29, 2026. The live price is at the top of the page.
| Thread size | M8 at the top, M16 × 1.5 at the bottom — THE BOLT AND SPRING MECHANISM ONLY, and THE CAP IS NOT INCLUDED. One piece, 1.77 × 0.59 × 0.59 in (45 × 15 × 15 mm). |
|---|---|
| Slotted or unslotted | NOT APPLICABLE — a bolt has no slot. Whether your sink needs a slotted drain is settled by the cap, which this part does not include. |
| Operating mechanism | A spring mechanism with a screw thread push. |
| Height under the sink | 2.30 in (58.3 mm) overall — 1.52 in (38.5 mm) popped up, 1.10 in (28 mm) closed. IT IS THE ONLY PART ON THIS SHELF THAT PUBLISHES ALL THREE, and the 0.41 in (10.5 mm) of travel is what the spring actually gives you. |
| Material and finish | Gold, and the bolt is normally hidden under the cap. THE MATERIAL IS PUBLISHED TWO WAYS: brass in the bullets, COPPER in the maker's own specification list — and they are not the same metal. Neither a weight nor a warranty is published. |
| Amazon reference | B08TLTRFTJ |
| EAN | 0694847833497 |
Push the cap down. If it goes down and stays down, or goes down and springs straight back without latching, the mechanism has failed — the spring or the latch inside the bolt — and this is the part you need. If the cap itself is cracked, pitted, or the chrome is lifting, the cap has failed and you need a plug top instead: the FASTROHY or the Tong Gu on this shelf. The two parts unscrew from each other at an M8 thread. This shelf sells both halves separately and two complete assemblies, and knowing which you need before ordering is the single most useful thing about it.
Because the bolt has to end up level with the sink. The drain body is already fitted in the sink, and the bolt screws down into it; if the bolt is too short the cap sits below the ceramic and water pools around it, and if it is too long the cap stands proud and does not seal. UXELY publishes popped up 1.52 in (38.5 mm), closed 1.10 in (28 mm), overall 2.30 in (58.3 mm) — so you can measure the old one before ordering. The ALI2 on this shelf publishes only the closed height, 1.10 in (28 mm), which happens to match; the other listings publish none. It is the one specification on a part like this that cannot be guessed.
Brass, almost certainly, and the discrepancy is loose language rather than a different product. Brass is a copper alloy — copper with zinc — and sellers of small plumbing fittings use the two words interchangeably. What the word is doing on this listing is distinguishing it from zinc alloy, which is what the FASTROHY cap on this shelf is made of: zinc alloy is cheaper and pits far faster in permanently wet conditions. A brass bolt sitting in standing water in a sink outlet is the right material. Three of the four cheap parts on this shelf say brass; one says zinc.
Same category, nearby prices, between bathroom fittings. What remains is the specifications every one publishes — half empty, a column is no use.
| Model | Price | Thread size | Slotted or unslotted | Operating mechanism | Height under the sink |
|---|---|---|---|---|---|
| UXELY pop-up drain bolt assembly | $8 | M8 at the top, M16 × 1.5 at the bottom — THE BOLT AND SPRING MECHANISM ONLY, and THE CAP IS NOT INCLUDED. One piece, 1.77 × 0.59 × 0.59 in (45 × 15 × 15 mm). | NOT APPLICABLE — a bolt has no slot. Whether your sink needs a slotted drain is settled by the cap, which this part does not include. | A spring mechanism with a screw thread push. | 2.30 in (58.3 mm) overall — 1.52 in (38.5 mm) popped up, 1.10 in (28 mm) closed. IT IS THE ONLY PART ON THIS SHELF THAT PUBLISHES ALL THREE, and the 0.41 in (10.5 mm) of travel is what the spring actually gives you. |
| Tong Gu brass pop-up plug cap | $8 | A nominal 1/3 in (8 mm) screw — the M8 standard — stated to fit a standard M8 pop up plug bolt. THE VISIBLE CAP ONLY, and the maker states explicitly that THE BOLT IS NOT INCLUDED. One piece at $7.99 on October 29, 2026, against $4.83 each for the zinc alloy pair on this shelf. 2.6 in / 66 mm diameter, 2.60 × 2.60 × 2.60 in (66 × 66 × 66 mm). | NOT PUBLISHED as such, but it is the ONLY PART ON THIS SHELF THAT PUBLISHES THE DRAIN HOLE IT SUITS: 1.4 to 1.5 in / 1.42 to 1.50 in (36 to 38 mm). That one figure is what the other cap here leaves you to guess. | NONE — it is a cap, driven by the bolt you supply. | NOT PUBLISHED BY THE MAKER. |
| ALI2 click-clack pop-up bolts, 2-pack | $10 | M8 at the top, M16 × 1.5 at the bottom — the same two threads as the UXELY bolt on this shelf. THE BOLT AND SPRING MECHANISM ONLY, cap not included. Two pieces at $5.00 each. | SUITED TO OVERFLOW SINKS, per the maker — which is the slotted case, and the only statement of it on this shelf among the bolt-only parts. | Push to close and seal, push again to open and drain. The maker states it collects hair neatly and prevents it clogging. | 1.10 in (28 mm) CLOSED, AND NOTHING ELSE: the popped-up height is not published, where UXELY gives 1.52 in (38.5 mm), and neither is the overall height, where UXELY gives 2.30 in (58.3 mm). So the travel — the whole point of a spring bolt — cannot be worked out from this listing. |
| FASTROHY click-clack drain plug tops | $10 | An 0.31 in (8 mm) screw hole, which is the M8 standard on this shelf — THE VISIBLE CAP ONLY, with NO MECHANISM INSIDE and no bolt included. Two pieces at $4.83 each. The diameter is published TWO WAYS: 2.60 in (66 mm) in the title and 2.56 in (65 mm) in the bullets. The maker's own advice is to measure your size before choosing. Five published bullets, two of which repeat each other. | NOT PUBLISHED, and neither is the DRAIN HOLE SIZE IT SUITS, where Tong Gu on this shelf publishes 1.42 to 1.50 in (36–38 mm) — so nothing on this listing tells you whether it will seat in your drain. | NONE — it is a cap, pushed by whatever bolt you already have. | NOT PUBLISHED BY THE MAKER. |
This model is listed on Amazon.com, at ≈ $8 at the last reading. Listed is not the same as in stock: availability changes daily, and the buy box shows the live price.
Details checked on October 29, 2026.
A click-clack drain whose button has stopped springing — the cheapest possible fix
Specifications: the manufacturer sheet for bathroom fittings and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Two clicker pop-up drains, brass · M8 top thread · the maker calls the same metal copper
A pair of brass clicker pop-up bolts with M8 and M16 x 1.5 threads and a 1.10 in (28 mm) closed height.
Best for: A click-clack drain that no longer springs — two brass mechanisms for ten dollars
≈ $10
Pack of two chrome sink drain push button click clack plug tops in high quality zinc alloy, intended as a replacement pop up click clack plug top; the title states 2.60 in (66 mm) and the bullets state a chrome plug diameter of 2.56 in (65 mm) with a screw hole diameter of 0.31 in (8 mm), and the maker advises measuring before choosing
A pair of chrome click-clack plug tops in zinc alloy, with an 0.31 in (8 mm) screw hole.
Best for: A cracked or pitted click-clack cap, where two for nine dollars means one spare in the drawer
≈ $10
Clicker drain without overflow, polished chrome · 1 1/4 in (32 mm) connection · metal build
A clicker drain without overflow, with a 1-1/4 in connection and a brass tailpiece, in polished chrome.
Best for: A Kohler sink and a Kohler faucet, where the finishes have to be the same and the paperwork has to say Kohler
≈ $100
