SAE J518 4-Bolt Flange
For SAE J518 4-Bolt Flange, governing standard is SAE J518; region of origin is American Connections; thread type (tapered or parallel) is flange bolts; seat or flare angle is flat surface; seal method is The male is a flanged head with a groove for an O-ring and either split or captive flange halves and bolt holes which match the port. The seal is made where the O-ring is compressed between the flanged head and the flat surface of the port. The connection is held by threaded bolts, recorded from its source on 2026-08-13.
- Connection type
- SAE J518 4-Bolt Flange verified
- Governing standard
- SAE J518 verified
- Region of origin
- American Connections our reading
- Thread type (tapered or parallel)
- flange bolts
- Seat or flare angle
- flat surface verified
- Seal method
- The male is a flanged head with a groove for an O-ring and either split or captive flange halves and bolt holes which match the port. The seal is made where the O-ring is compressed between the flanged head and the flat surface of the port. The connection is held by threaded bolts. verified
- Interchangeability notes
- Excluding bolt sizes, SAE J518, JIS B 8363, ISO/DIS 6162 and DIN 20066 are interchangeable.
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
SAE J518 4-Bolt Flange* There are two pressure ratings for these connections: Code 61 which is considered the standard series and Code 62 which is the 6000 PSI series. The design is the same for each series, yet the flange head diameters and bolt hole spacing are larger for the 6000 PSI high pressure Code 62 connection. The female port of the fitting is a smooth, un-threaded port with four bolt holes set in a rectangular pattern around the port. The male is a flanged head with a groove for an O-ring and either split or captive flange halves and bolt holes which match the port. The seal is made where the O-ring is compressed between the flanged head and the flat surface of the port. The connection is held by threaded bolts.
— brennaninc.com, retrieved 2026-08-13
Source
- brennaninc.comhttps://brennaninc.com/connection-types/