IDENTIFYING & MEASURING HYDRAULIC FITTINGS


HOW TO IDENTIFY & MEASURE HYDRAULIC FITTINGS USING DIGITAL CALIPER / TAPE MEASURE


If you are not familiar with the hydraulic world then identifying common hose and fittings may leave room for error.

It's not as straight forward as measuring 1"on your tape measure and it being a 1" (#16) hydraulic fitting.

Below is an easy step by step guide on verifying what fitting and size you need (+ Cross Refence Chart).


For Males:

When measuring male threads, always measure on the outside of the fitting.  Never the inside. 

Demonstrated below:


For Females:

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

Demonstrated like below:

Hydraulic Fitting Cross Reference Measurements


Now you can identify which fitting you need measurements for by using the pictures below.  

Then use the cross reference chart to match to the correct hydraulic fitting 'Dash Size' based on your measurements.


Example:  If you used a Tape Ruler and measured a Male Pipe Fitting at 1" then your Dash Size would be the #12 (3/4") hydraulic size.

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 below has an error factor of +/- of 5%.  

SELECT YOUR HOSE ID BELOW

1/4 100R16-04 Hose ID

3/8 100R16-06 Hose ID

1/2 100R16-08 Hose ID

3/4 100R16-12 Hose ID


DON'T SEE WHAT YOU NEED? FEEL FREE TO PLACE A PHONE ORDER

MONDAY - FRIDAY (8AM - 5PM EST)


434-392-9833