# JIS 30° Female (Cone) Seat — Hydraulic and pipe connection type identification

For JIS 30° Female (Cone) Seat, governing standard is JIS B 0202; region of origin is Japanese Connections; thread type (tapered or parallel) is parallel pipe threads; seat or flare angle is 30°; seal method is Japanese JIS 30° flare connections are comparable to American SAE 37° flare connections in application and sealing principals, recorded from its source on 2026-08-13.

- **Connection type:** JIS 30° Female (Cone) Seat _(verified: appears in the quote below)_
- **Governing standard:** JIS B 0202 _(verified: appears in the quote below)_
- **Region of origin:** Japanese Connections _(our reading, not quoted from the source)_
- **Thread type (tapered or parallel):** parallel pipe threads _(verified: appears in the quote below)_
- **Seat or flare angle:** 30° _(verified: appears in the quote below)_
- **Seal method:** Japanese JIS 30° flare connections are comparable to American SAE 37° flare connections in application and sealing principals. _(verified: appears in the quote below)_
- **Interchangeability notes:** JIS 30° flare angle and dimensions are different with threads that are similar to BSPP _(verified: appears in the quote below)_

## What the source says

> JIS 30° Female (Cone) Seat connections are are parallel pipe threads per JIS B 0202. Japanese JIS 30° flare connections are comparable to American SAE 37° flare connections in application and sealing principals. Yet, JIS 30° flare angle and dimensions are different with threads that are similar to BSPP.

## Source

- https://brennaninc.com/connection-types/

Last verified: 2026-08-13. Review by: 2028-08-12.
Part of [Hydraulic and pipe connection type identification](https://referencesource.org/hydraulic-pipe-connection-types/).