[[TitleIndustry]]

JIS BSPP thread flare fitting size chart

Date:Apr 02, 2020

Japanese Industrial Standard JIS 300 Flare

The male half has a 30° seat with a straight thread, while the female has a 300 seat with a straight thread as well. This connection and the 37° Flare are alike, however it's 30° seat and BSPP-like thread dimensions make it different from the American 37° Flare.

Inch size

Dash size

Thread Size

Male Thread O.D. (in)

Female thread O.D (in)

1⁄8

-2

1⁄8 - 28

3⁄8

0.38

11⁄32

0.35

1⁄4

-4

1⁄4 - 19

33⁄64

0.52

15⁄32

0.47

3⁄8

-6

3⁄8 - 19

21⁄32

0.65

19⁄32

0.60

1⁄2

-8

1⁄2 - 14

13⁄16

0.82

3⁄4

0.75

5⁄8

-10

5⁄8 - 14

7⁄8

0.88

13⁄16

0.80

3⁄4

-12

3⁄4 - 14

1 1⁄32

1.04

31⁄32

0.97

1

-16

1 - 11

1 5⁄16

1.30

1 7⁄32

1.22

1 1⁄4

-20

1 1⁄4 - 11

1 21⁄32

1.65

1 9⁄16

1.56

1 1⁄2

-24

1 1⁄2 - 11

1 7⁄8

1.88

1 25⁄32

1.79

2

-32

2 - 11

2 11⁄32

2.35

2 1⁄4

2.26


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