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Brass Adapter, 1/4-18 Male NPT To 0.25 Inch Female 42 deg Inverted Flare, 90 deg Elbow

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Description & Features

Optimize your hydraulic and instrumentation systems with this Brass Adapter 1/4-18 Male NPT To 0.25 Inch Female 42 deg Inverted Flare 90 deg Elbow by Danfoss Power Solutions (Aeroquip Inc-Alternate). This durable adapter is essential for hydraulic brake power steering fuel lines transmission cooler lines LP and natural gas applications.

The adapter's male NPT end fits securely with 1/4-18 threading while the female 42-degree inverted flare end accommodates a 0.25-inch diameter tube. Engineered to withstand temperatures as low as -65 degrees Fahrenheit this adapter ensures reliable performance under harsh conditions.

With a drop dimension of 0.8400 inches it meets the rigorous standards required for instrumentation and hydraulic systems. It's versatile and adheres to the UNSPSC 40183100 classification. The precision threading and sealing ensure a leak-free connection making it vital for various hydraulic and fuel line systems.

MPN: 42 Inverted Flare To Pipe Adapters SKU: 402X4X4

Supplier Part Number: 402X4X4

Specifications

Alternate Part Numbers
Alternate Part Number C1HJ22, Alternate Part Number FMC3650400, Alternate Part Number MI-00333443, Alternate Part Number MINO-00925F73169
Application
Hydraulic brake, power
steering, fuel lines and
transmission cooler lines,
LP and natural gas (special
order).
instrumentation and hydraulic
systems.
Drop Dimension
0.84
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Gender 2
13555
End Size 1
0.25
End Size 2
0.44
End Type 1
NPTF
End Type 2
Inverted
L
1.09
M
0.28
Minimum Working Temperature
-65
Supplier Part Number
402X4X4
Thread 1
1/4-18
Thread Sealant
No
Tube O.D.
0.25
Tube O.D.
0.25
Product Weight
0.05 lbs

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Product Questions & Answers (2)

Question by: Debbie B on Apr 7, 2025, 8:37 AM
Will this fitting hold up okay for hooking up my fuel line?
Answer by: Customer Support on Apr 8, 2025, 2:04 PM
This brass adapter is designed for fuel lines, along with hydraulic brakes, power steering, and transmission cooler lines. It can also be used in LP and natural gas applications, though those are considered special orders.
Question by: Chad H on Nov 24, 2025, 2:34 PM
trying to hook a 1/4 inch tube up to a 1/4-18 npt port, is this the right elbow for that?
Answer by: Customer Support on Nov 26, 2025, 6:17 AM
For that combo, it matches up as a 90 degree elbow with a 1/4-18 male NPT on one end and a 0.25 inch female 42 degree inverted flare on the other, which is meant to mate to 1/4 inch tube flare connections.