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Mason jar flat lids: regular Ø70.00 and wide-mouth Ø86.00
What is the diameter of a mason jar lid? · Standard part · basis: Regular 70 mm (2 3/4 in) and wide-mouth 86 mm (3 3/8 in) flat lids; 0.154 mm tinplate (GPI 450 metal closure spec, 0.00605 in minimum nominal)
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
- Flat lids: regular mouth Ø70.00, wide mouth Ø86.00, both 0.154 mm thick. Each file is a plain disc at those sizes.
- Not drawn, because no dimension is published for it: the sealing-compound ring and the formed (embossed) profile.
- The lid sits on the jar's glass rim inside the band; the regular band's thread root is Ø71.22, so the Ø70.00 lid sits inside it.
Sizes
| lid | dia_mm | thickness_mm |
|---|---|---|
| regular mouth | 70.0 | 0.154 |
| wide mouth | 86.0 | 0.154 |
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 |
|---|---|---|---|---|
| flat lid on jar mouth under the band | Ø70.00 disc in Ø71.22 band thread root | glass rim, clamped by the band | clamp | mason-lid-flat-regular-70* |
| flat lid on jar mouth under the band | Ø86.00 disc | wide-mouth glass rim and band | clamp | mason-lid-flat-wide-86* |
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 2 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| mason-lid-flat-regular-70 | regular-mouth flat lid: Ø70.00 disc (2 3/4 in), 0.154 mm tinplate; sealing-compound ring and formed profile not drawn (no published dimensions) | STEP · STL |
| mason-lid-flat-wide-86 | wide-mouth flat lid: Ø86.00 disc (3 3/8 in), 0.154 mm tinplate; sealing-compound ring and formed profile not drawn (no published dimensions) | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=mason-jar-lid
How it fits
Goes in or on
Mason jarssits on the jar's rimConnects to
Mason jar screw band, regular mouththe band clamps it to the rimYou might also need
Questions
What diameter is a regular mouth mason jar lid?
70.00 mm (2 3/4 in); a wide-mouth lid is 86.00 mm (3 3/8 in). Both are 0.154 mm tinplate.
How thick is a mason jar lid?
0.154 mm (0.00605 in) tinplate, the minimum nominal thickness in the 70-450 metal closure spec.