CUSTOM HOSE ASSEMBLIES
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%.
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