Brass Adapter, 0.31 Inch Female 42 deg Inverted Flare Union

Alternate Part Numbers
Alternate Part Number C1HN73, Alternate Part Number MI-00333409, Alternate Part Number MINO-00925F73151
Application
Other - Hydraulic brake, power steering, fuel lines and transmission cooler lines, LP and natural gas (special order)
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13553
End Gender 2
13555
End Size 1
0.50
End Size 2
0.50
End Type 1
SAE
End Type 2
SAE
L
0.70
Minimum Working Temperature
-65
Supplier Part Number
302X5
Thread Sealant
No
Tube O.D.
0.31
Tube O.D.
0.3125
Product Weight
0.03 lbs

Product Questions & Answers

Got a brake line on an older truck that needs a union, this the right fitting for that kind of job?
Question by: Lance S on Dec 26, 2025, 9:50 PM
Brake line repair is exactly what this union is built for. It uses a 42 degree inverted flare seat on both ends with SAE threads, which is the standard connection type for most automotive and light truck hydraulic brake lines. The tube O.D. it works with is 0.3125 inch, so as long as your existing line matches that size, it should mate up clean. Both end sizes are 0.5 inch. It's brass, so it holds up well against the moisture and road grime those lines deal with over time.
Answer by: Customer Support on Dec 28, 2025, 5:35 PM
Will this here fitting work alright for hooking up my fuel lines?
Question by: Marvin G on Oct 1, 2025, 5:11 PM
This adapter is indeed intended for fuel lines, as well as hydraulic brake, power steering, transmission cooler, LP, and natural gas applications.
Answer by: Customer Support on Oct 2, 2025, 6:06 PM

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