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Steel Adapter, 3/8-18 Male NPT To 3/4-16 Male JIC 37 deg Flare, Straight Bulkhead

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Description & Features

Designed for straight bulkhead installations, this Eaton Aeroquip Steel Adapter, 3/8-18 Male NPT To 3/4-16 Male JIC 37 Deg Flare, Straight Bulkhead connects male NPT and male JIC 37° flare fittings in a single, inline configuration. Part of the Eaton Aeroquip 2240 Series, it is suited for hydraulic, instrumentation, and chemical processing systems where reliable thread-to-flare transitions are required.

Constructed from steel with a straight body profile, this adapter accommodates panel or bulkhead mounting and maintains a 2.36-inch overall length. The 37° flare seat conforms to SAE standards, providing consistent sealing performance across compatible hydraulic lines and assemblies.

SKU: 2240-6-8S

Supplier Part Number (MPN): 2240-6-8S

Alternate Part Numbers: C1BD21, MI-00298914, MINO-00015F47345

Specifications

Connection Size 1
1/2 in
Connection Size 2
3/8 in
Connection Type
Male JIC, MNPT
Connection Type 1
Male SAE 37 deg JIC Flare
Connection Type 2
Male NPTF
Dimension Standards
SAE J514
Dimensions
2.36 in L
Finish
Dura-Kote™
Fitting Type
Adapter
Hex Size
1 x 1 in
Material
Steel
Material Construction
Carbon Steel
Operating Temperature
-65 to 400 deg F
Series
2240 Series
Thread Size
3/4-16 x 3/8-18
Tube OD
1/2 in

Product Questions & Answers (1)

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Question by: Tony R on Dec 3, 2025, 5:59 PM
Will this bulkhead fitting hold up okay in a hydraulic system running around 3000 PSI?
Answer by: Customer Support on Dec 5, 2025, 6:35 AM
This Eaton Aeroquip adapter is designed for use in hydraulic systems, instrumentation, and even chemical processing setups, so 3000 PSI should be well within its operating range.

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