FEMALE
NPT
SIZE
P

MALE NPT SIZE
PI

BASIC
ORDERING
NUMBER

A

MIN
OPENING  E

HEX FLAT
H

1/8

1/16

-2-WRA-1

1.09

.12

9/16

1/4

1/8

-4-WRA-2

1.26

.19

3/4

3/8

1/8

-6-WRA-2

1.33

.19

7/8

3/8

1/4

-6-WRA-4

1.50

.28

7/8

1/2

1/8

-8-WRA-2

1.58

.19

1.1/16

1/2

1/4

-8-WRA-4

1.76

.25

1.1/16

1/2

3/8

-8-WRA-6

1.75

.38

1.1/16

3/4

1/4

-12-WRA-4

1.82

.28

1.5/16

3/4

3/8

-12-WRA-6

1.82

.38

1.5/16

3/4

1/2

-12-WRA-8

2.02

.47

1.5/16

1

1/4

-16-WRA-4

1.96

.28

1.5/8

1

1/2

-16-WRA-8

2.16

.47

1 5/8

1

34

-16-WRA-12

2.17

.62

1 5 8