Neck Finish Reference Guide
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Look up glass bottle neck finish specifications, compatible closures, and common mismatch issues.
28-400
Continuous thread (GPI 400)
28mm GPI finish, 400 thread style. One of the most common neck finishes for beverage and food bottles.
ReadingAI estimate
28-400 is the most common GPI finish. If you're unsure which finish you need, start here — but verify your product's liner compatibility.
Compatible Closures
Common Uses
- Beverage bottles
- Sauce bottles
- Oil bottles
- Personal care products
⚠️ Common Pitfalls
- Do not confuse with 28-410 (different thread pitch)
- Check liner compatibility with product (acidic contents need PE/EVA liner)
Neck Finish Quick Reference Table
Complete list of neck finishes in our reference database. Click the search icon to look up details.
| Finish Code | Diameter | Thread Type | Common Uses | |
|---|---|---|---|---|
| 28-400 | 28mm | Continuous thread (GPI 400) | Beverage bottlesSauce bottlesOil bottles | |
| 28-410 | 28mm | Continuous thread (GPI 410) | Pharmaceutical bottlesChemical containersVitamins/supplements | |
| 24-400 | 24mm | Continuous thread (GPI 400) | Essential oil bottlesDropper bottlesSmall cosmetic bottles | |
| 33-400 | 33mm | Continuous thread (GPI 400) | Wide-mouth jarsThick saucesCosmetic creams | |
| 26/22 BVS | 26mm | Crown (pry-off / twist-off) | Beer bottlesCider bottlesCarbonated soft drinks | |
| ROPP 28mm | 28mm | ROPP (Roll-On Pilfer-Proof) | Spirits bottlesLiqueur bottlesPremium beverage packaging | |
| 18-400 | 18mm | Continuous thread (GPI 400) | Essential oilsSerumsEye drops | |
| 20-400 | 20mm | Continuous thread (GPI 400) | Facial serumsTravel-size toiletriesNail polish remover | |
| 38-400 | 38mm | Continuous thread (GPI 400) | Cosmetic jarsFood jarsSupplements | |
| Cork 18.5mm | 18.5mm | Cork (straight bore) | Wine bottles (not sparkling)Olive oil bottlesSpecialty vinegar |
Neck Finish Reference at a Glance
Why Use This Reference Guide
Instant Lookup
Type a finish code (e.g., 28-400) and get diameter, thread type, compatible closures, common uses, and pitfalls in one view.
Pitfall Warnings
Every finish entry includes common mistakes — like confusing 28-400 with 28-410 or forgetting to check liner compatibility.
Closure Compatibility
Each finish lists exactly which closures fit: CT caps, ROPP, droppers, sprayers, pumps, and crown corks.
Industry Context
Common uses by industry segment: beverage, spirits, pharmaceutical, cosmetic, food — so you know what's standard in your category.
Global Coverage
Covers GPI (US/global), BVS (German/European), ROPP (spirits), and cork finishes. One reference for the international supply chain.
Full Reference Table
Browse all 10+ finishes in a sortable table even when you don't know the exact code. Scan by diameter, thread type, or common use.
Who Uses the Neck Finish Guide
How to Use the Neck Finish Guide
Enter the Code
Type the neck finish code from your bottle specification or supplier quote into the search field.
Review Specifications
Review the thread type, compatible closures, and typical applications for that neck finish.
Avoid Pitfalls
Check the common pitfalls section to avoid costly mistakes like mismatched closures or wrong liner choices.