Danfoss / Eaton Brass Adapter

Description & Features

Constructed from solid brass, this NPTF male-to-NPTF male nipple adapter from Eaton Aeroquip provides reliable thread-to-thread connections in hydraulic and industrial fluid systems. Both ends are 1/4 in. NPTF, making it well suited for straight-through line connections where a secure, leak-resistant seal is required.

The Danfoss / Eaton Brass Adapter carries Dura-Kote plating for corrosion resistance and is rated for operating pressures above SAE standards. Certified to ASME, SAE, and ASA specifications, it meets the requirements of demanding industrial environments. A minimum working temperature of -65°F supports use across a broad range of service conditions.

SKU: 3328X4

Supplier Part Number (MPN): 3328X4

Specifications

Alternate Part Numbers
Alternate Part Number MINO-00015X05729
Certifications
ASME|SAE|ASA
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
0.25
End Size 2
0.25
End Type 1
NPTF
End Type 2
NPTF
Features
Dura-Kote plating for superior corrosion resistance|Design flexibility with hundreds of styles to choose from|Higher operating pressures above SAE standards
ICC
Nipple Adapters
Item Type
NPTF Male to NPTF Male
Language
English
Minimum Working Temperature
-65
Net Pack Quantity Units
EA
NMFC
60
Product Material
Brass
Product Width
0.56
Sub Brand
None
Supplier Part Number
3328X4
Product Weight
0.07 lbs

Product Questions & Answers (3)

Question by: Gene S on Aug 9, 2025, 6:04 AM
got a setup with 1/4 nptf ports on both sides. is this adapter the straight long nipple style with male threads on each end?
Answer by: Customer Support on Aug 11, 2025, 6:10 AM
For a straight pipe-to-pipe connection, this part is a long nipple adapter with 1/4 inch NPTF male threads on both ends, so it matches two female 1/4 NPTF ports.
Question by: Dwight S on Sep 19, 2025, 5:37 PM
both ends are 1/4 NPTF male on this one, that right? just need to make sure before I order
Answer by: Customer Support on Sep 21, 2025, 10:00 AM
Correct on both counts. Each end is 1/4 inch NPTF male thread, so it connects two female-threaded ports in a straight-through configuration. The NPTF thread form gives you a pressure-tight mechanical seal without relying solely on tape or sealant, which matters in hydraulic and pneumatic lines where a weeping fitting causes real headaches over time.
Question by: Dustin H on Jan 21, 2026, 12:19 PM
got a 1/4 pipe port on both sides. is this the right little nipple to tie two NPTF female fittings together?
Answer by: Customer Support on Jan 23, 2026, 6:39 AM
Function-wise, it is a long nipple style adapter that connects NPTF female ports by using male NPTF threads on both ends. The ends are 1/4 inch NPTF male to 1/4 inch NPTF male.