The sprayer that does not fit
Updated
On this page9
The measurement
On this shelf 31 of the 63 containers carry a 20-400 finish, then 24-400 at 8, 38-400 at 5, and 22-400 and 18-400 at 4 each. The catalog holds 34 fine mist sprayers in total, on 20-410 at 16, 24-410 at 14 and 20-400 at 4.
So the mismatch is in the second number
The -400 and -410 suffixes describe different thread configurations, not interchangeable variants of one. A 20-410 sprayer is not a 20-400 sprayer, and the two are a digit apart in a product code.
Which is the classic way this goes wrong
A bottle is chosen on appearance and a sprayer on finish diameter, the cases arrive, and the sprayer either will not run down or seats without sealing. Both are discovered at the filling table.
The shelf does carry 18 fine mist sprayers
Verified against the necks on this shelf, which is the useful number: those are the ones already matched for you. Plus 14 trigger sprayers and 14 phenolic caps, and 125 continuous thread closures.
Standardize on a bottle and sprayer pair, not separately
Pick the pair first and let the range follow from it. With 20-400 dominating the bottles and most sprayers on 20-410 and 24-410, this is the decision that most repays being made deliberately.
Chemical compatibility is a separate question again
A sprayer that threads correctly can still fail against a high-alcohol formula. Thread match and compatibility are two checks, and passing the first tells you nothing about the second.
Every container page lists its verified closures
Which is where to settle this rather than at the bench. The fit is already done per neck; what is left for you is the compatibility and the spray pattern.
Read the second number, every time
It is the single most useful habit on this shelf. The diameter tells you almost nothing on its own, and the thread configuration is what decides whether two parts become one package.