Understanding Neck Finishes
The key to finding the right closure.
If you've ever found the perfect bottle or jar only to discover that the cap doesn't fit, you've encountered one of the most important details in packaging: the neck finish.
The neck finish identifies the opening of a container and helps determine which closure will fit.
How to Read a Neck Finish
A specification such as 20/410 contains two pieces of information.
-
20
DiameterRefers generally to the neck diameter.
-
410
FinishIdentifies the thread/finish style.
The container and closure must have compatible specifications.
Common Neck Finishes
Go Krafted currently offers options including:
Caps & Closures (5)
- 13/415
- 15/415
- 18/415
- 20/410
- 20/415
Lids (16)
- 27mm
- 33/400
- 38/400
- 40/400
- 43/400
- 45/400
- 48/400
- 51/400
- 53/400
- 58/400
- 63/400
- 66/400
- 70/400
- 75/400
- 83/400
- 89/400
Why Neck Finish Matters
A closure isn't interchangeable simply because it looks like it will fit. The correct neck finish helps ensure the component is designed to work with the corresponding container. This is especially important when purchasing:
- Pumps
- Droppers
- Sprayers
- Caps
- Lids
- Dispensers
How Do I Find My Neck Finish?
Check:
- The manufacturer's specification sheet
- Your container documentation
- The original packaging supplier
- Your existing product specifications
If you're still unsure, don't guess.
Send Us What You Have
If you have a container but don't know the neck finish, send us:
- A photo
- Manufacturer information
- Product specifications
- Container dimensions
Our team can help you identify what information you need to find the appropriate closure.
If you are sourcing the container and closure separately, confirm the neck finish before ordering. It's one of the easiest ways to avoid an expensive packaging mismatch.
Find the Right Closure
Not sure which closure fits your container? We'll help you match it.