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Straight brass hydraulic hose fitting with male NPT threads

Eaton

Eaton Aeroquip 1AA6MP4 Straight Hose Fitting 1/4 in 3/8-18 NPT

SKU CH-8D9Y-5P4VB

Connects 1/4 in hose to 3/8-18 NPTF male thread in a straight rigid hydraulic crimp fitting

  • Straight rigid design simplifies hydraulic line routing
  • Male 3/8-18 NPTF thread seals directly into ports
  • Compatible with hose dash size -6 and 1/4 in I.D.
  • Suits multiple Eaton Aeroquip hose series including EC110 and FC310
  • New factory fitting ready for crimp installation

Eaton Aeroquip 1AA6MP4 Straight Hose Fitting 1/4

This Eaton Aeroquip hydraulic crimp fitting is a straight, rigid connector designed for 1/4 in hose inside diameter. It suits fluid power systems requiring a male 3/8-18 NPTF thread on one end and a genderless hose interface on the other. Installers working with compatible hose series will find it a direct replacement component for maintenance or new assembly work.

Compatibility check before ordering

Verify that your hose matches dash size -6 and an inside diameter of 1/4 in. The fitting is rated for use with hose series including 2661 (-12 to -32), EC110, EC115, EC118, EC210, EC215, FC310, FC510, FC579, FC611, FC619 (-12 to -32), FC639, FC693, FC735, FC839B, FC849, FC849B, GH120, GH194, GH195, GH663, GH681-6, GH781 and GH793. Confirm your system uses NPTF threads and does not require a vacuum-rated fitting, as this model carries no vacuum rating.

Build quality and daily use implications

The straight, rigid shape keeps the flow path short and allows the fitting to sit close to ports or bulkheads without adding bend radius. A male NPTF thread seals on the taper, so thread sealant or tape is normally applied during installation. The genderless hose end is crimped onto the hose, creating a permanent joint that resists vibration and pressure cycling in hydraulic circuits.

Highlights

  • Straight rigid design simplifies hydraulic line routing
  • Male 3/8-18 NPTF thread seals directly into ports
  • Compatible with hose dash size -6 and 1/4 in I.D.
  • Suits multiple Eaton Aeroquip hose series including EC110 and FC310
  • New factory fitting ready for crimp installation

Specifications

BrandEATON AEROQUIP

Questions about this item

Does the Eaton Aeroquip 1AA6MP4 come with the hose or do I need to buy it separately?

The fitting is sold alone; you must supply a compatible hose such as series 2661, EC110, EC115, EC118, EC210, EC215, FC310, FC510, FC579, FC611, FC619, FC639, FC693, FC735, FC839B, FC849, FC849B, GH120, GH194, GH195, GH663, GH681-6, GH781 or GH793 in 1/4 in. I.D.

Which thread size matches my 3/8-18 NPTF port?

This fitting has a male 3/8 in. -18 NPTF thread, so it threads directly into a 3/8-18 NPTF female port.

What does the 1/4 in. hose I.D. mean when I crimp this fitting?

It means the fitting is designed for hose with a 1/4 in. inside diameter, such as dash size -6 hose from the listed series.

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