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Steel Adapter, 3/4-14 Male NPT To 1-5/16-12 Male JIC 37 deg Flare, Straight

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Description & Features

This steel adapter is part of the Eaton Aeroquip 2021 series of straight adapters. The fitting features a 3/4-14 male NPT to 1-5/16-12 male JIC 37 deg flare connection.

Applications for this Steel Adapter include marine and military, chemical processing, pulp and paper industries, food and beverage processing, and off-shore drilling.

SKU: 2021-12-16S

Supplier Part Number (MPN): 2021-12-16S

Alternate Part Numbers: 20011358, C1AU78, CONSX0144, MI-00310340, MINO-00015F60087

Specifications

Connection Size 1
1 in
Connection Size 2
3/4 in
Connection Type
Male JIC, MNPT
Connection Type 1
Male SAE 37 deg JIC Flare
Connection Type 2
Male NPTF
Dimension Standards
SAE 070102/J514
Dimensions
2.11 in L
Finish
Dura-Kote™
Fitting Type
Adapter
Hex Size
1-1/2 in
Material
Steel
Material Construction
Carbon Steel
Operating Temperature
-40
Series
2021 Series
Thread Size
3/4-14, 1-5/16-12

Product Questions & Answers (3)

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Question by: Ross T on Feb 17, 2026, 9:09 PM
i got a hose end that’s 1-5/16-12 JIC, will this adapter screw right onto it?
Answer by: Customer Support on Feb 19, 2026, 2:53 PM
The JIC side on this adapter is a 1-5/16-12 male SAE 37 degree flare, so it matches a hose end or fitting with a 1-5/16-12 female JIC 37 degree flare.
Question by: Rick H on Apr 10, 2025, 3:25 PM
Will this adapter work alright for connecting a pipe to a 37 degree flared fitting?
Answer by: Customer Support on Apr 12, 2025, 2:43 PM
This straight adapter is specifically made for connecting a pipe thread to a 37-degree flared fitting.
Question by: Brett H on Jun 7, 2025, 7:43 AM
got a port that’s 3/4-14 npt and i need to go over to a jic flare line. is this the right adapter or am i mixin stuff up
Answer by: Customer Support on Jun 8, 2025, 8:03 AM
Function-wise, it’s a straight adapter made to transition from a 3/4-14 male NPT pipe thread to a 1-5/16-12 male JIC 37 degree flare connection. If those two thread callouts match what you’re tying together, this is the correct style of fitting.

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