Reference Source

ISO 6149

For ISO 6149, region of origin is ISO Connections; thread type (tapered or parallel) is straight threads; seat or flare angle is flat face; seal method is The male connector has straight threads with an O-ring. The female port is also straight threads machined surface to provide a smooth, flat, accurately located surface (minimum spotface), along with a chamfer where the O-ring seats. It seals when the O-ring is compressed into the chamfer when mating the male connection; interchangeability notes is similar to the SAE J514 Straight Thread O-ring Boss (ORB), this type of connection incorporates metric threads, recorded from its source on 2026-08-13.

Connection type
ISO 6149 verified
Governing standard
ISO 6149 verified
Region of origin
ISO Connections our reading
Thread type (tapered or parallel)
straight threads verified
Seat or flare angle
flat face
Seal method
The male connector has straight threads with an O-ring. The female port is also straight threads machined surface to provide a smooth, flat, accurately located surface (minimum spotface), along with a chamfer where the O-ring seats. It seals when the O-ring is compressed into the chamfer when mating the male connection. verified
Interchangeability notes
similar to the SAE J514 Straight Thread O-ring Boss (ORB), this type of connection incorporates metric threads verified
Sourcebrennaninc.com
Verified
Review by
DatasetHydraulic and pipe connection type identification

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

ISO 6149 Port and Stud Ends with ISO 261 Threads and O-ring Seal though it is similar to the SAE J514 Straight Thread O-ring Boss (ORB), this type of connection incorporates metric threads. The male connector has straight threads with an O-ring. The female port is also straight threads machined surface to provide a smooth, flat, accurately located surface (minimum spotface), along with a chamfer where the O-ring seats. It seals when the O-ring is compressed into the chamfer when mating the male connection. This is also considered a mechanical connection.

brennaninc.com, retrieved 2026-08-13

Source

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