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Steel Adapter, 3/4-14 Female NPT To 1-1/16-12 Male JIC 37 deg Flare, Straight Bulkhead

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Description & Features

Part of Eaton Aeroquip's 2239 Series, this Steel Adapter, 3/4-14 Female NPT To 1-1/16-12 Male JIC 37 deg Flare, Straight Bulkhead provides a reliable transition between NPTF internal pipe threads and SAE 37° flare connections in a straight bulkhead configuration. The female end carries a 3/4-14 NPTF thread, while the male JIC end uses a 1-1/16-12 thread, making it well suited for hydraulic, instrumentation, and chemical processing systems where panel or bulkhead mounting is required.

Constructed from steel and rated for a minimum working temperature of -65°F, this adapter is designed for demanding industrial environments. The 1.375-inch hex on the male end allows for standard wrench installation. At 0.7 lb, it is a compact, durable fitting appropriate for use across a range of fluid power applications.

SKU: 2239-12-12S

Supplier Part Number (MPN): 2239-12-12S

Alternate Part Numbers: C1BD14, MI-00314992, MINO-00015F63241

Specifications

A
3.05
Alternate Part Numbers
Alternate Part Number C1BD14, Alternate Part Number MI-00314992, Alternate Part Number MINO-00015F63241
Application
Other - Hydraulic, instrumentation, and chemical processing systems
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13553
End Gender 2
13556
End Size 1
0.75
End Type 1
NPTF
End Type 2
SAE 37
Hex Size 2
1.38
Minimum Working Temperature
-65
Supplier Part Number
2239-12-12S
Thread 1
3/4-14
Thread 2
1-1/16-12
Thread Sealant
No
Tube O.D.
0.75
Tube O.D.
0.75
Product Weight
0.70 lbs

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Product Questions & Answers (4)

Question by: Debbie M on May 23, 2025, 3:43 PM
trying to replace an old bulkhead fitting, how do i tell if this one matches up?
Answer by: Customer Support on May 24, 2025, 5:47 PM
Match it by the thread callouts on both ends. This adapter is a straight bulkhead with a 3/4-14 female NPTF on one side and a 1-1/16-12 male JIC 37 degree flare on the other, sized for 3/4 inch tube OD.
Question by: Pete A on Sep 27, 2025, 7:02 AM
got a bulkhead port i need to pass through a panel. is this the straight adapter that’s 3/4-14 female npt on one side and 1-1/16-12 male jic on the other?
Answer by: Customer Support on Sep 28, 2025, 10:15 AM
For a straight bulkhead pass-through, this adapter matches those thread callouts: 3/4-14 female NPTF on one end and 1-1/16-12 male SAE 37 degree flare (JIC) on the other.
Question by: Troy C on Mar 19, 2026, 4:06 PM
got a 3/4 female NPT port on a manifold block and need to tie into a JIC 37 line, this the right adapter for that?
Answer by: Customer Support on Mar 21, 2026, 6:54 AM
That's what this one's built for. One end is 3/4-14 female NPT, the other is 1-1/16-12 male JIC 37 degree flare, so you're going straight from an internal pipe thread port into a JIC flare fitting without needing any intermediate pieces. It's also a bulkhead style, meaning it's meant to pass through a panel or mounting surface, which is worth knowing before you go to install it.
Question by: Janice M on Dec 20, 2025, 8:06 AM
Will this work for hooking up hydraulic lines on my tractor?
Answer by: Customer Support on Dec 22, 2025, 8:35 AM
Designed for hydraulic, instrumentation, and chemical processing systems, this adapter should be suitable for your tractor's hydraulic lines, provided the 3/4-14 female NPT and 1-1/16-12 male JIC 37 degree flare connections match your requirements.