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Appendix
Appendix
Installation & Maintenance
Assemblies
Equipment & Accessories
Fittings
Hoses
Fitting Identification
Fitting Standards
Male
Female
SAE 45˚ Flare (SAE J512)
Identification
Straight threads. Both male and female have 45-degree seat.
Seal
The seal is made on the 45-degree flare seat. The
threads hold the connection mechanically. Only connect
male SAE 45 with female SAE 45.
Application
Commonly used in low-pressure, refrigeration and
automotive piping systems and are frequently
constructed of brass and connected to copper tubing.
Comments
Use caution when identifying this fitting as the threads
are the same as SAE J512 37-degree (JIC), in -2, -3, -4, -5,
-8
and -10 sizes. The sealing surface angles are different,
however.
Thread Identification Table
SAE 45° Flare
Dash Size
Nominal
Size
Thread
Size
Female
Thread ID
Male
Thread OD
in.
in.
in.
-2
1/8
5/16-24 17/64
5/16
-3
3/16 3/8-24 21/64
3/8
-4
1/4
7/16-20 25/64
7/16
-5
5/16 1/2-20 29/64
1/2
-6
3/8
5/8-18 9/16
5/8
-7
7/16 11/16-16 5/8
11/16
-8
1/2
3/4-16 11/16
3/4
-10
5/8
7/8-14 13/16
7/8
-12
3/4
1
h
-14 63/64
1
h
Male
Female
O-Ring Boss Straight Thread (SAE J514)
Identification
Male fitting has a straight thread and an O-ring. The
female port has a straight thread and a chamfer to
accept the O-ring.
Seal
The seal takes place by compressing the O-ring into the
chamfer. The threads hold the connection mechanically.
Only connect O-ring boss male with O-ring boss female.
Application
Recommended by the National Fluid Power Association
for optimal leakage control in medium- and high-pressure
hydraulic systems.
Thread Identification Table
Straight Thread O-Ring Boss
Dash Size
Nominal
Size
Thread
Size
Female
Thread ID
Male
Thread OD
in.
in.
in.
-2
1/8
5/16-24 17/64
5/16
-3
3/16
3/8-24 21/64
3/8
-4
1/4
7/16-20 25/64
7/16
-5
5/16
1/2-20 29/64
1/2
-6
3/8
9/16-18 1/2
9/16
-8
1/2
3/4-16 11/16
3/4
-10
5/8
7/8-14 13/16
7/8
-12
3/4
1
h
-12 31/32
1
h
-14
7/8
1
i
-12 1
5
1
i
-16
1
1
j
-12 1
7
1
j
-20
1
e
1
c
-12 1
9
1
c
-24
1
f
1
d
-12 1
;
1
d
-32
2
2
f
-12 2
8
2
f