Long Nipple

Description & Features

Designed for use in grease, refrigeration, instrumentation, and hydraulic systems, the Eaton Aeroquip Long Nipple offers reliable performance and versatility. Engineered with precision, this brass adapter features NPTF male connections on both ends, each measuring 0.375 inches, ensuring a secure fit and seamless integration into your existing setups. Its robust construction is enhanced with Dura-Kote plating, providing superior corrosion resistance, which is essential for maintaining longevity in demanding environments.

Meeting SAE, ASA, and ASME certifications, this adapter supports higher operating pressures, surpassing standard SAE requirements to deliver exceptional performance. The Eaton Aeroquip Long Nipple is ideal for specialized applications including fuel, LP, and natural gas systems available by special order. With a compact design featuring a 0.69-inch width and a lightweight build of just 0.5 lb, it ensures easy handling and installation.

SKU: 3329X6

Supplier Part Number (MPN): 3329X6

Specifications

Alternate Part Numbers
Alternate Part Number MINO-00015X05735
Application
Grease, refrigeration, instrumentation and hydraulic systems. Fuel, LP and natural gas available on special order.
Certifications
SAE|ASA|ASME
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
0.38
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
0.69
Sub Brand
None
Supplier Part Number
3329X6
Product Weight
0.12 lbs

Product Questions & Answers (3)

Question by: Todd D on Jan 18, 2026, 6:06 AM
both ends on this fitting are NPTF male, right? just want to make sure before I order a handful of em
Answer by: Customer Support on Jan 19, 2026, 8:35 PM
Correct on both counts. The 3329X6 is a male NPTF to male NPTF configuration, 3/8 inch on each end. It's a straight nipple, so there's no thread change or size reduction happening. If you're connecting two female NPTF ports and need a rigid brass nipple in between, this one fits that bill.
Question by: Darryl J on Oct 15, 2025, 6:39 PM
trying to replace a little brass nipple i’ve got between two female ports, is this one male nptf on both ends and 3/8 size?
Answer by: Customer Support on Oct 17, 2025, 6:49 AM
It’s a brass long nipple with NPTF male threads on both ends, and both ends are 0.375 in size.
Question by: Steve P on Oct 24, 2025, 10:08 AM
Will this long nipple work for hydraulic systems, or is it just for other stuff like grease lines?
Answer by: Customer Support on Oct 25, 2025, 10:38 AM
It's designed for applications including grease, refrigeration, instrumentation, and hydraulic systems, so it should work fine for hydraulic applications.