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Brass Adapter, 0.31 Inch Female 42 deg Inverted Flare To 1/4-18 Male NPT, Straight

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Description & Features

Designed with precision this Brass Adapter features a 0.31 Inch Female 42 Inverted Flare to 1/4-18 Male NPT offering seamless integration for various hydraulic applications. Engineered by Danfoss Power Solutions this connector ensures optimal performance in fuel lines hydraulic brake systems power steering and transmission cooler lines as well as LP and natural gas systems.

The robust brass construction delivers excellent durability contributing to longer lifespans and reduced maintenance needs. The male NPT and female inverted flare ends facilitate a secure leak-proof connection essential for maintaining system integrity.

This adapter's consistent and reliable performance makes it a trusted choice for industry professionals ensuring efficient operations in demanding environments.

MPN: EAR99

Supplier Part Number: 202X5X4

Specifications

Alternate Part Numbers
Alternate Part Number C1HH75, Alternate Part Number MI-00333378, Alternate Part Number MINO-00925F73128
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
13554
End Gender 2
13555
End Size 1
0.25
End Size 2
0.50
End Type 1
NPTF
End Type 2
UNF
L
0.98
Supplier Part Number
202X5X4
Thread 1
1/4-18
Thread Sealant
No
Tube O.D.
0.31
Tube O.D.
0.31
Product Weight
0.02 lbs

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Product Questions & Answers (2)

Question by: Keith H on Oct 18, 2025, 11:24 AM
fitting's got a 1/4-18 male NPT on one end -- what's the thread setup on the other side?
Answer by: Customer Support on Oct 20, 2025, 6:47 AM
The other end is a 0.31 inch female 42 degree inverted flare. So you've got a female inverted flare on one side accepting a matching flare fitting, and a male NPT thread on the other end that screws into a standard pipe thread port. Straight configuration, no angle to it.
Question by: Denise M on Jan 27, 2026, 8:41 PM
got a line with a 5/16 inverted flare female end and i need to tie into a 1/4 npt port, is this the right little adapter?
Answer by: Customer Support on Jan 29, 2026, 6:01 PM
For that mix of ends, yes. This adapter is a straight brass fitting with a 0.31 inch (5/16) female 42 degree inverted flare on one side and a 1/4-18 male NPT on the other, made for a secure, leak resistant connection between those two styles.