# Mason jar screw band, regular mouth (70-450 thread)

> What thread is on a mason jar band?

- Category: Hardware › Found & household materials
- Kind: Standard part
- Basis: 70-450 continuous-thread closure drawing (Comet Tool 1340-0109): root T 2.804 in, crest E 2.700 in, 4 TPI, 1 1/4 turns; Ball band height 9/16 in regular, 5/8 in wide
- Page: https://xemstudio.com/objects/mason-jar-band/ · JSON: https://xemstudio.com/api/geometry?object=mason-jar-band · Plain text: https://xemstudio.com/objects/mason-jar-band/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses

**Exact dimensions.** Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part.

## Notes

- Regular-mouth band: Ø71.53 outside, 14.29 (9/16 in) tall, 0.154 mm sheet.
- Internal thread: 4 TPI (6.35 mm pitch), single start, right hand, 1¼ turns; root Ø71.22, crest Ø68.58 (1.32 deep), drawn as a 60° L-form.
- The wide-mouth band is 5/8 in (15.88) tall; it has no file, because no 86 mm finish drawing with its thread was found.
- Not drawn: the band's top flange and its aperture (not published).

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| band internal thread | Ø71.22 root / Ø68.58 crest, 6.35 pitch, 1¼ turns RH | jar 70-450 glass thread | run | mason-band-* |

## Sizes

| band | outside_mm | height_mm | thread | root_mm | crest_mm | turns |
|---|---|---|---|---|---|---|
| regular (70) | 71.53 | 14.29 | 4 TPI (6.35) RH single start | 71.22 | 68.58 | 1.25 |
| wide (86) | None | 15.88 | None | None | None | None |

## 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 (1 parts, CC BY 4.0, Xem Studio)

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

- mason-band-regular-70: [STEP](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-band-regular-70.step) · [STL](https://xemstudio.com/files/hardware/mason-jars-and-lids/mason-band-regular-70.stl) — regular-mouth screw band, 70-450 internal thread: root Ø71.22 (T), crest Ø68.58 (E), 6.35 mm pitch (4 TPI) single-start right-hand, 1 1/4 turns, 60° L-form 1.32 deep; 14.29 tall (9/16 in), 0.154 mm sheet; top flange not drawn (aperture not published)

## How it fits

### Goes in or on
- [Mason jars: regular (60 mm mouth) and wide-mouth (76 mm mouth), outside envelopes](https://xemstudio.com/objects/mason-jar/): screws onto the jar's 70-450 thread

### Connects to
- [Mason jar flat lids: regular Ø70.00 and wide-mouth Ø86.00](https://xemstudio.com/objects/mason-jar-lid/): clamps the flat lid

## Questions

**What thread is on a regular mason jar?**

The 70-450 finish: 4 threads per inch (6.35 mm pitch), single start, right hand, 1¼ turns; in the band the thread root is Ø71.22 and the crest Ø68.58.

**How tall is a mason jar band?**

9/16 in (14.29 mm) for the regular band and 5/8 in (15.88 mm) for the wide-mouth band.

## Fits with

- [Mason jar flat lids: regular Ø70.00 and wide-mouth Ø86.00](https://xemstudio.com/objects/mason-jar-lid/)
- [Mason jars: regular (60 mm mouth) and wide-mouth (76 mm mouth), outside envelopes](https://xemstudio.com/objects/mason-jar/)
- [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/)