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

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Description & Features

This Danfoss / Eaton 2021 Series straight adapter facilitates connections between pipe and 37° flare systems. Designed for use in demanding applications, this steel adapter is suitable for marine/military, chemical processing, pulp and paper, food and beverage, and off-shore drilling environments.

The adapter features a 3/4-14 male NPT to 3/4-16 male JIC 37 deg flare, ensuring secure and leak-free connections. It is built to withstand a minimum working temperature of -40 degrees. The end connections are both male, with a 0.75 inch size for both ends. The first end is NPTF type with 3/4-14 threads, and the second end is SAE 37 type with 3/4-16 threads. The hex size 2 measures 1.12 inches, with tube I.D.s of 0.39 and 0.72 inches, respectively, and a tube O.D. of 0.5 inches.

SKU: 2021-12-8S

Supplier Part Number (MPN): 2021-12-8S

Alternate Part Numbers: 20011355, C1AU81, MI-00310209, MINO-00015F60072

Specifications

A
1.85
Alternate Part Numbers
Alternate Part Number 20011355, Alternate Part Number C1AU81, Alternate Part Number MI-00310209, Alternate Part Number MINO-00015F60072
Application
Marine/Military, Chemical Processing, Pulp and Paper Industries, Food and Beverage Processing, Off-Shore Drilling
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
0.75
End Size 2
0.75
End Type 1
NPTF
End Type 2
SAE 37
Hex Size 2
1.12
Minimum Working Temperature
-40
Supplier Part Number
2021-12-8S
Thread 1
3/4-14
Thread 2
3/4-16
Thread Sealant
No
Tube I.D. 1
0.39
Tube I.D. 2
0.72
Tube O.D.
0.50
Tube O.D.
0.5
Product Weight
0.10 lbs

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Product Questions & Answers (2)

Question by: Carl C on Feb 16, 2026, 6:48 AM
got a hose end that’s 3/4-16 JIC, what’s the other side of this adapter supposed to screw into
Answer by: Customer Support on Feb 18, 2026, 6:44 AM
On the other end you have a 3/4-14 male NPTF pipe thread. So it is a straight male NPTF to male SAE 37 degree flare (JIC) adapter, with both ends in 3/4 size.
Question by: Stan S on Dec 7, 2025, 7:37 PM
got a hose end that’s 3/4-16 JIC, and the port on my manifold is 3/4-14 NPT. is this the straight adapter to tie those together?
Answer by: Customer Support on Dec 9, 2025, 6:33 PM
Function-wise, that’s exactly what it’s for. It’s a straight steel adapter with a 3/4-14 male NPT on one end and a 3/4-16 male JIC 37 degree flare on the other.