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Brass Adapter, 1/4-18 Male NPT To 5/8-18 Male SAE 45 deg Flare, 90 deg Elbow

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Description & Features

Crafted by Danfoss Power Solutions (Aeroquip Inc-Alternate) this brass adapter also known as 49X6 offers a reliable connection between a 1/4-18 male NPT and a 5/8-18 male SAE 45-degree flare. Designed for industrial use it features a 90-degree elbow to facilitate seamless directional changes in fluid systems.

The adapter's precision-engineered threads ensure a secure and leak-free connection. Manufactured to high standards it maintains performance under varying conditions. Made from durable brass it resists corrosion and ensures longevity making it suitable for various commercial applications.

With an end size of 0.375 for 1 and 0.25 for 2 this component provides compatibility with different setups. The male UNF and NPTF ends are designed for easy and secure threading promoting efficient system integration without additional sealants.

MPN: EAR99

Supplier Part Number: 49X6

Specifications

Alternate Part Numbers
Alternate Part Number C1HQ39, Alternate Part Number MI-00333231, Alternate Part Number MINO-00925F73072
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Gender 2
13556
End Size 1
0.38
End Size 2
0.25
End Type 1
UNF
End Type 2
NPTF
M
0.97
N
1.06
Supplier Part Number
49X6
Thread 1
1/4-18
Thread 2
5/8-18
Thread Sealant
No
Tube O.D.
0.38
Tube O.D.
0.38
Product Weight
0.11 lbs

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Product Questions & Answers (2)

Question by: Ronnie W on Oct 22, 2025, 3:25 PM
Does this adapter need any thread sealant on the NPT end, or do the threads seal up on their own?
Answer by: Customer Support on Oct 23, 2025, 6:16 PM
The male NPTF end on this adapter is engineered to make a pressure-tight connection without additional sealants. The thread form itself creates the seal as it tightens, so you won't need to reach for the tape or paste on that side. The SAE 45-degree flare end seals on the flare seat, which is also a metal-to-metal connection that doesn't rely on sealant to hold.
Question by: Roger W on Mar 25, 2025, 8:09 PM
Will this fitting work to hook up a fuel pressure gauge to my fuel line?
Answer by: Customer Support on Mar 26, 2025, 9:30 PM
Designed to connect a 1/4-18 male NPT to a 5/8-18 male SAE 45-degree flare, this brass adapter should be suitable if your fuel pressure gauge and fuel line match those thread types and sizes.