Atlanta Rubber and Hydraulics Inc.
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O-Ring Boss Male Rigid Hydraulic Hose Fittings
Replaces the Discontinued Eaton Weatherhead U Series
Highlights
- High strength
- Corrosion resistant coated steel
- Manufactured to exact specifications to match hydraulic hose
Hose Compatible
- SAE R1S
- SAE R2S
- Thermoplastic R7 & R8
MADE IN THE USA!
U-Series Reference
We have created a reference chart for your convenience at the bottom of this page with additional fitting specifications.
Click on the Specifications button below to view.
The Weatherhead U Series Part Number is located at the end of the Product Name.
There may not be an interchange for all of our hose ends.
If you are on a phone, click on the small green plus to view more information.
| Image | Name | Summary | Price | Buy | hf:att:pa_hydraulic-coupling-sizes |
|---|---|---|---|---|---|
 | 3/16" Hose ID x 1/4" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 3-16 | ||
| 1/4" Hose ID x 1/4" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 04U-P04 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 1-4-04 | ||
| 1/4" Hose ID x 5/16" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 04U-P05 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 1-4-04 | ||
| 1/4" Hose ID x 3/8" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 04U-P06 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 1-4-04 | ||
| 1/4" Hose ID x 1/2" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 1-4-04 | ||
| 3/8" Hose ID x 3/8" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 06U-P06 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 3-8 | ||
| 3/8" Hose ID x 1/2" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 06U-P08 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 3-8 | ||
| 3/8" Hose ID x 5/8" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 06U-P10 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 3-8 | ||
| 1/2" Hose ID x 1/2" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 08U-P08 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 1-2 | ||
| 1/2" Hose ID x 5/8" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 08U-P10 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 1-2 | ||
| 1/2" Hose ID x 3/4" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 08U-P12 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 1-2 | ||
| 5/8" Hose ID x 5/8" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 10U-P10 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 5-8 | ||
| 5/8" Hose ID x 3/4" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 5-8 | ||
| 3/4" Hose ID x 5/8" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 12U-P10 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 3-4 | ||
| 3/4" Hose ID x 3/4" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 12U-P12 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 3-4 | ||
| 3/4" Hose ID x 7/8" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 3-4 | ||
| 3/4" Hose ID x 1" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 3-4 | ||
| 1" Hose ID x 3/4" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 1 | ||
| 1" Hose ID x 1" - Male Boss O-Ring Rigid Standard Hydraulic Fitting | 16U-P12 | Website pricing may be different than counter sales or phone sales. *** Do not use with a Swage Tool. | 1 |
Technical Specifications for the MB – O-Ring Boss Male Rigid
Our ORB Fittings to Weatherhead U Series Comparison Chart
The Weatherhead U Series Part Number is listed in the first column.
We have more ORB fittings available and there may not be a comparible part number.
| Eaton Weatherhead Part Number | SKU | A (Hose ID) | B | C | D | Thread |
|---|---|---|---|---|---|---|
| N/A | MB-03-04 | 3/16 | 1.92 | 0.86 | 9/16 | 7/16 - 20 |
| 04U-P04 | MB-04-04 | 1/4 | 2.11 | 0.86 | 9/16 | 7/16 - 20 |
| 04U-P05 | MB-04-05 | 1/4 | 2.11 | 0.86 | 5/8 | 1/2 - 20 |
| 04U-P06 | MB-04-06 | 1/4 | 2.15 | 0.89 | 11/16 | 9/16 - 18 |
| N/A | MB-04-08 | 1/4 | 2.34 | 1.09 | 7/8 | 3/4 - 16 |
| 06U-P06 | MB-06-06 | 3/8 | 2.5 | 1 | 11/16 | 9/16 - 18 |
| 06U-P08 | MB-06-08 | 3/8 | 2.54 | 1.04 | 7/8 | 3/4 - 16 |
| 06U-P10 | MB-06-10 | 3/8 | 2.65 | 1.15 | 1 | 7/8 - 14 |
| 08U-P08 | MB-08-08 | 1/2 | 2.68 | 1.18 | 7/8 | 3/4 - 16 |
| 08U-P10 | MB-08-10 | 1/2 | 2.75 | 1.25 | 1 | 7/8 - 14 |
| 08U-P12 | MB-08-12 | 1/2 | 2.84 | 1.34 | 1-1/4 | 1 1/16 - 12 |
| 10U-P10 | MB-10-10 | 5/8 | 2.76 | 1.26 | 1-1/16 | 7/8 - 14 |
| N/A | MB-10-12 | 5/8 | 2.86 | 1.36 | 1-1/4 | 1 1/16 - 12 |
| 12U-P10 | MB-12-10 | 3/4 | 2.75 | 1.25 | 1-1/8 | 7/8 - 14 |
| 12U-P12 | MB-12-12 | 3/4 | 2.95 | 1.36 | 1-1/4 | 1 1/16 - 12 |
| N/A | MB-12-14 | 3/4 | 2.95 | 1.36 | 1-1/2 | 1 3/16 - 12 |
| N/A | MB-12-16 | 3/4 | 3.05 | 1.46 | 1-1/2 | 1 5/16 - 12 |
| N/A | MB-16-12 | 1 | 3.11 | 1.37 | 1-3/8 | 1 1/16 - 12 |
| 16U-P12 | MB-16-16 | 1 | 3.21 | 1.48 | 1-1/2 | 1 5/16 - 12 |