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Danfoss / Eaton STC Adapter

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Description & Features

Designed for straight-run hydraulic connections, this carbon steel adapter joins a 9/16 in. male SAE O-ring Boss port to a 1/2 in. female Stc fitting. Part of the Danfoss / Eaton STC Adapter range from Aeroquip, it is built to exceed standard SAE pressure ratings, making it suitable for demanding industrial hydraulic circuits.

Dura-Kote plating provides corrosion resistance verified against ASTM B117 salt spray testing, with additional compliance to SAE J1176 and Din 2ST standards. Rated for use down to -40°, the adapter is available across hundreds of configuration styles, offering broad compatibility across a wide range of hydraulic system layouts.

SKU: FF3042-0608S

Supplier Part Number (MPN): FF3042-0608S

Specifications

Brand
Aeroquip® by Danfoss
Connection Size 1
3/8 in
Connection Size 2
1/2 in
Connection Type
Female STC, Male SAE ORB
Connection Type 1
Male SAE ORB
Connection Type 2
Female STC
Dimension Standards
SAE J1926/J1176
Dimensions
33.7 mm L
Finish
Dura-Kote™
Fitting Type
Adapter
Material
Steel
Material Construction
Carbon Steel
nmfc
50
Operating Temperature
-40 to 250 deg F
Seal Material
NBR
Series
FF3042 Series
Thread Size
9/16-18

Product Questions & Answers (1)

Question by: Hubert B on Feb 14, 2026, 8:14 AM
Will this here adapter work with my hydraulic setup, which uses SAE O-ring Boss and STC fittings?
Answer by: Customer Support on Feb 16, 2026, 6:51 AM
It's designed to connect a 9/16 in. male SAE O-ring Boss port to a 1/2 in. female STC fitting, making it suitable for hydraulic systems using those connection types.

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