CUSTOM HOSE ASSEMBLIES 

SELECT YOUR HOSE ID BELOW

1/4 100R16-04 Hose ID

3/8 100R16-06 Hose ID

1/2 100R16-08 Hose ID

HOW TO MEASURE HYDRAULIC FITTINGS

DIGITAL CALIPER / TAPE MEASURE

If you dont work with hydraulics everyday, identifying common hose fittings may be daunting. Lets find out how to identify sizes of common fittings before ordering.

For Males:

You should always measure male threads on the outside of the fitting. Never the inside.

For Females:

When measuring female threads, always measure inside the hex nut.

The chart below represents the most common measurements for Pipe, JIC, O-Ring Boss and Flat Face style hose fittings.


Pipe

Dash Size

Decimal (Caliper)

Inches (Tape Rule)

#2 (1/8”)

0.348

5/16

#4 (1/4”)

0.470

1/2

#6 (3/8”)

0.610

5/8

#8 (1/2”)

0.745

3/4

#12 (3/4”)

0.960

1

#16 (1”)

1.200

1 ¼


JIC / Boss Oring

Dash Size

Decimal (Caliper)

Inches (Tape Rule)

#4 (1/4”)

0.375

3/8

#5 (5/16”)

0.441

7/16

#6 (3/8”)

0.500

1/2

#8 (1/2”)

0.690

5/8

#10 (5/8”)

0.800

7/8

#12 (3/4”)

1.110

1

#16 (1”)

1.250

1 ¼


Flat Face

Dash Size

Decimal (Caliper)

Inches (Tape Rule)

#4 (1/4”)

0.500

1/2

#6 (3/8”)

0.625

5/8

#8 (1/2”)

0.750

3/4

#10 (5/8”)

0.936

1

#12 (3/4”)

1.110

1 1/4

#16 (1”)

1.360

1 3/8


The chart above has an error factor of +/- of 5%.  


FITTING END IDENTIFIER

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