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Mason jar screw band, regular mouth (70-450 thread)
What thread is on a mason jar band? · 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
Long Earth Society build part. Jar-bodied cold sides and vacuum test chambers; a lid disc drawn at Ø70 or Ø86 clamps under the band. The engines
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. Mating features
- sizes
- 2 in table
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).
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 |
Mating features
Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits 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-* |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Mason jar | web | CC BY-SA 4.0 (text) |
| Ball (Newell Brands) | Ball canning jars and lids | web | Ball site verify |
| 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 | manufacturer drawing verify | |
| WebstaurantStore (Ball 30000) | Ball regular-mouth lids and bands: top diameter 2 3/4 in, height 9/16 in | web | listing verify |
| WebstaurantStore (Ball 40000ZFP) | Ball wide-mouth lids and bands: top diameter 3 3/8 in, height 5/8 in | web | listing verify |
| Healthy Canning | Lids for home canning: regular mouth 70 mm (2 3/4 in), wide mouth 86 mm (3 3/8 in) | web | site verify |
| The Cary Company | 70G-450 metal lid spec 30WG70 (GPI 450 finish; tinplate minimum nominal thickness .00605 in) | distributor spec verify | |
| Long Earth Society | Engine builds (videos and write-ups) | web, video | LES site |
Free files
★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| mason-band-regular-70 | 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) | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=mason-jar-band
How it fits
Goes in or on
Mason jarsscrews onto the jar's 70-450 threadConnects to
Mason jar flat lidsclamps the flat lidYou might also need
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.