# Mason jars: regular (60 mm mouth) and wide-mouth (76 mm mouth), outside envelopes

> What is the mouth opening of a mason jar?

- Category: Hardware › Found & household materials
- Kind: Standard part
- Basis: Mouth openings 2 3/8 in (60 mm) regular and 3 in (76 mm) wide (USDA Complete Guide to Home Canning, via Wikipedia); outside envelopes at the sizes in the table
- Page: https://xemstudio.com/objects/mason-jar/ · JSON: https://xemstudio.com/api/geometry?object=mason-jar · Plain text: https://xemstudio.com/objects/mason-jar/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- Mouth openings: regular 60 mm, wide 76 mm. Regular jars take the Ø70.00 lid and the 70-450 band; wide jars the Ø86.00 lid.
- The files are outside envelopes (plain cylinders) of six common jars at the sizes in the table; those sizes are typical and vary by maker, as no jar drawing is published.
- Not drawn: the glass thread, neck, shoulder and wall (the 450 glass finish drawings are not published).

## Sizes

| jar | mouth | mouth_opening_mm | lid_mm | envelope_od_mm | envelope_height_mm |
|---|---|---|---|---|---|
| half-pint | regular | 60 | 70 | 65 | 95 |
| pint | regular | 60 | 70 | 78 | 130 |
| quart | regular | 60 | 70 | 90 | 175 |
| pint | wide | 76 | 86 | 86 | 125 |
| quart | wide | 76 | 86 | 90 | 170 |
| half-gallon | wide | 76 | 86 | 110 | 240 |

## Where the files are

- Wikipedia: [Mason jar](https://en.wikipedia.org/wiki/Mason_jar) — web — CC BY-SA 4.0 (text)
- Ball (Newell Brands): [Ball canning jars and lids](https://www.ballmasonjars.com/) — web — Ball site (verify at link)
- Comet Tool Co.: [70-450 continuous-thread closure drawing (part 1340-0109): T 2.804 in at skirt, E 2.700 in at midpoint, 4 TPI (.250 pitch), 1 1/4 turns](https://www.comet-tool.com/wp-content/uploads/2021/08/70-450-0109-merged.pdf) — PDF — manufacturer drawing (verify at link)
- WebstaurantStore (Ball 30000): [Ball regular-mouth lids and bands: top diameter 2 3/4 in, height 9/16 in](https://www.webstaurantstore.com/ball-30000-regular-mouth-replacement-lids-and-bands-pack/52730000.html) — web — listing (verify at link)
- WebstaurantStore (Ball 40000ZFP): [Ball wide-mouth lids and bands: top diameter 3 3/8 in, height 5/8 in](https://www.webstaurantstore.com/ball-40000zfp-wide-mouth-lids-and-bands-for-canning-jars-pack/52740000.html) — web — listing (verify at link)
- Healthy Canning: [Lids for home canning: regular mouth 70 mm (2 3/4 in), wide mouth 86 mm (3 3/8 in)](https://www.healthycanning.com/lids-for-home-canning/) — web — site (verify at link)
- The Cary Company: [70G-450 metal lid spec 30WG70 (GPI 450 finish; tinplate minimum nominal thickness .00605 in)](https://www.thecarycompany.com/media/pdf/specs/30WG70.pdf) — PDF — distributor spec (verify at link)
- Long Earth Society: [Engine builds (videos and write-ups)](https://longearthsociety.com/engineering/) — web, video — LES site

## Free STEP/STL (6 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/mason-jar/index.json

- mason-jar-half-pint-regular-envelope: [STEP](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-half-pint-regular-envelope.step) · [STL](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-half-pint-regular-envelope.stl) — half-pint regular-mouth jar, outside envelope Ø65 × 95 (table values, typical ±2 mm by maker); glass thread, neck and wall not drawn
- mason-jar-pint-regular-envelope: [STEP](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-pint-regular-envelope.step) · [STL](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-pint-regular-envelope.stl) — pint regular-mouth jar, outside envelope Ø78 × 130 (table values, typical ±2 mm by maker); glass thread, neck and wall not drawn
- mason-jar-quart-regular-envelope: [STEP](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-quart-regular-envelope.step) · [STL](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-quart-regular-envelope.stl) — quart regular-mouth jar, outside envelope Ø90 × 175 (table values, typical ±2 mm by maker); glass thread, neck and wall not drawn
- mason-jar-pint-wide-envelope: [STEP](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-pint-wide-envelope.step) · [STL](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-pint-wide-envelope.stl) — pint wide-mouth jar, outside envelope Ø86 × 125 (table values, typical ±2 mm by maker); glass thread, neck and wall not drawn
- mason-jar-quart-wide-envelope: [STEP](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-quart-wide-envelope.step) · [STL](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-quart-wide-envelope.stl) — quart wide-mouth jar, outside envelope Ø90 × 170 (table values, typical ±2 mm by maker); glass thread, neck and wall not drawn
- mason-jar-half-gallon-wide-envelope: [STEP](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-half-gallon-wide-envelope.step) · [STL](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-jar-half-gallon-wide-envelope.stl) — half-gallon wide-mouth jar, outside envelope Ø110 × 240 (table values, typical ±2 mm by maker); glass thread, neck and wall not drawn

## How it fits

### Goes in or on
- [Mason jar flat lids: regular Ø70.00 and wide-mouth Ø86.00](https://xemstudio.com/objects/mason-jar-lid/): the lid sits on the rim

### Connects to
- [Mason jar screw band, regular mouth (70-450 thread)](https://xemstudio.com/objects/mason-jar-band/): the band screws onto the jar

## Questions

**How wide is the opening of a mason jar?**

60 mm (2 3/8 in) for regular mouth and 76 mm (3 in) for wide mouth.

**Are the jar files exact?**

They are outside envelopes at typical sizes; jars vary by maker and no jar drawing is published, so measure yours.

## Fits with

- [Mason jar flat lids: regular Ø70.00 and wide-mouth Ø86.00](https://xemstudio.com/objects/mason-jar-lid/)
- [Mason jar screw band, regular mouth (70-450 thread)](https://xemstudio.com/objects/mason-jar-band/)
- [Laboratory rubber stoppers #0–#13 (25 mm tall)](https://xemstudio.com/objects/rubber-stoppers/)
- [O-rings, common metric sizes (ISO 3601)](https://xemstudio.com/objects/o-rings-metric/)
- [Steel food cans: soup, vegetable, tuna, #2, #2½, #10, coffee](https://xemstudio.com/objects/steel-food-cans/)