SAE J514, Straight O-Ring Boss (ORB) Thread Sizes
This straight thread connection uses the same threads as the JIC 37° . However the 37° flare has been removed and an o-ring has been added. When mated with a female o-ring boss port the o-ring is trapped in a special tapered counter bore to affect the seal.
|
Dash Size
|
Inch Size
|
Thread Size
|
Male Thread (O.D)
|
Female Thread (I.D.)
|
|
2
|
1/8"
|
1/8-27*
|
.31
|
.27
|
|
3
|
3/16"
|
3/8-24*
|
.38
|
.34
|
|
4
|
1/4"
|
7/16-20*
|
.44
|
.39
|
|
5
|
5/16"
|
1/2-20*
|
.5
|
.45
|
|
6
|
3/8"
|
9/6-18*
|
.56
|
.51
|
|
8
|
1/2"
|
3/4-16*
|
.75
|
.67
|
|
10
|
5/8"
|
7/8-14*
|
.88
|
.8
|
|
12
|
3/4"
|
3/4-14
|
1.06
|
.98
|
|
14
|
7/8"
|
1 3/16-12
|
1.18
|
1.09
|
|
16
|
1"
|
1 5/16-12
|
1.31
|
1.22
|
|
20
|
1 1/4"
|
1 5/8-12
|
1.63
|
1.54
|
|
24
|
1 1/2"
|
1 7/8-12
|
1.88
|
1.79
|
|
32
|
2"
|
2.5-12
|
2.5
|
2.41
|
