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Danfoss / Eaton Brass Adapter

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Description & Features

Rated for grease, refrigeration, instrumentation, and hydraulic systems, this brass male-to-male adapter provides a reliable threaded connection in demanding industrial environments. Both ends are 3/4 in. NPTF, making it well suited for direct pipe-to-pipe connections where a leak-free, pressure-rated seal is required. Fuel, LP, and natural gas configurations are available on special order.

The Danfoss / Eaton Brass Adapter is manufactured to ASME, ASA, and SAE standards and carries Dura-Kote plating for corrosion resistance across a wide operating temperature range, with a minimum rating of -65°F. Eaton Aeroquip's design maintains operating pressures above standard SAE thresholds, and the broad range of available styles within this product family supports flexible configuration for varied system requirements.

SKU: 3329X12

Supplier Part Number (MPN): 3329X12

Specifications

Brand
Aeroquip® by Danfoss
Connection Size 1
3/4 in
Connection Size 2
3/4 in
Connection Type
MNPT
Connection Type 1
Male NPTF
Connection Type 2
Male NPTF
Fitting Type
Nipple
For Use With
Brass, Bronze and Iron Pipes
Material
Brass
Material Construction
CA360 Brass
nmfc
60
Segment Code
A
Series
3329 Series
Thread Size
3/4-14
Threaded Sealant
Without Thread Sealant

Product Questions & Answers (3)

Question by: Jimmy T on May 6, 2025, 7:09 PM
Will this Eaton adapter work for hydraulic systems, or is it just for gas and stuff?
Answer by: Customer Support on May 8, 2025, 6:47 AM
This Eaton brass adapter is definitely suitable for hydraulic systems, as well as grease, refrigeration, and instrumentation applications. It can handle fuel, LP, and natural gas too, but those are on special order.
Question by: Duane C on Feb 2, 2026, 10:54 AM
got a 3/4 pipe run and need a straight connector, is this the one thats male on both ends?
Answer by: Customer Support on Feb 3, 2026, 7:21 PM
For a straight pipe-to-pipe hookup, it’s an NPTF male to NPTF male long nipple adapter with 0.75 inch ends on both sides.
Question by: Hank B on Oct 2, 2025, 9:06 AM
both ends on this are NPTF male right? trying to figure out if it'll work as a nipple between two female ports on a hydraulic block
Answer by: Customer Support on Oct 4, 2025, 8:49 AM
Correct on both counts. Each end is 3/4 NPTF male, so if your block has two female NPTF ports at 3/4 inch, this nipple will thread straight into both sides. NPTF threads are pressure-tight by design, which makes them a solid choice for hydraulic connections without relying solely on a sealant to hold pressure.

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