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SAE J518 4 bolt Flange size chart

Date:Apr 02, 2020

Four-Bolt Flange (SAE J518 and ISO 6162)

Commonly found in fluid power systems, the Four-Bolt Flange works well connecting 1/2" to 3" hose and tube. The seal forms between the O-ring on the male half and the smooth face of the female port (with the O-ring seating on the ring groove of the male). Two clamp halves, held by four bolts, hold the connection together.

 

These are available in two pressure groups: standard (code 61) and high pressure (code 62).

Inch size

Dash size

Code 61 Bolt Spacing

Code 61 Flange O.D.

Code 62 Bolt Spacing

Code 62 Flange O.D.

1⁄2

-8

1 1⁄2

1 3⁄16

1 19⁄32

1 1⁄4

3⁄4

-12

1 7⁄8

1 1⁄2

2

1 5⁄8

1

-16

2 1⁄16

1 3⁄4

2 1⁄4

1 7⁄8

1 1⁄4

-20

2 5⁄16

2

2 5⁄8

2 1⁄8

1 1⁄2

-24

2 3⁄4

2 3⁄8

3 1⁄8

2 1⁄2

2

-32

3 1⁄16

2 13⁄32

3 13⁄16

3 1⁄8

2 1⁄2

-40

3 1⁄2

3 5⁄16

n/a

n/a

3

-48

4 3⁄16

4

n/a

n/a


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