JIS B 0203 Taper pipe threads
CurrentLatest edition found. Still confirm amendments with the publisher.
- Edition
- JIS B 0203:1999
- Publisher
- JIS
- Part family
- Fasteners & threads
- Reviewed
- 27 October 2026 · source checked
Is JIS B 0203 still current?
Yes. JIS B 0203:1999 is the latest edition MechAtlas found (MechAtlas review: 27 October 2026). Check the publisher for amendments before you specify it.
What it covers
Japanese sealing taper pipe threads (R, Rc, Rp).
Parts that use JIS B 0203
- Pipe threads (BSP / NPT) (Japan (JIS), main)
Inch-sized threads on pipes and fittings: taper threads seal on the thread, parallel threads need a gasket.
R 1/2 / Rc 1/2
Taper pipe threads; 1999.
Official source
MechAtlas does not reproduce standards. Check the official edition at the publisher's page for JIS B 0203 or the JIS store.
Open in MechAtlasCheck a drawing callout
Other fasteners & threads standards
- DIN 125-1 Replaced
Washers, product grade A, up to 250 HV - DIN 1481 Replaced
Heavy spring pins (old) - DIN 2999-1 Replaced
Whitworth pipe threads (old) - DIN 6325 Replaced
Hardened parallel pins m6 (old) - DIN 6914 Replaced
HV hex bolts for steel structures (old) - DIN 7 Replaced
Parallel pins (old) - DIN 7337 Replaced
Break mandrel blind rivets (old) - DIN 7991 Replaced
Hexagon socket countersunk head screws - DIN 9021 Replaced
Washers, outside diameter about 3 x thread - DIN 912 Replaced
Hexagon socket head cap screws (ISO 4762 modified) - DIN 913 Replaced
Hexagon socket set screws, flat point (ISO 4026 modified) - DIN 916 Replaced
Hexagon socket set screws, cup point (ISO 4029 modified)