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Steel Adapter, 1-1/4-11-1/2 Male NPT To 1-1/16-12 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 connects a 1-1/4-11-1/2 male NPT to a 1-1/16-12 male JIC 37-degree flare.

The 2021 series adapter is suitable for demanding applications such as marine, military, chemical processing, pulp and paper, food and beverage, and off-shore drilling. This adapter has an A dimension of 2.36.

SKU: 2021-20-12S

Supplier Part Number (MPN): 2021-20-12S

Alternate Part Numbers: C1AU91, MI-00310296, MINO-00015F60080

Specifications

Connection Size 1
3/4 in
Connection Size 2
1-1/4 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
2.36 in L
Finish
Dura-Kote™
Fitting Type
Adapter
Material
Steel
Material Construction
Carbon Steel
Operating Temperature
-40
Series
2021 Series
Thread Size
1-1/16-12 x 1-1/4-11-1/2

Product Questions & Answers (2)

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Question by: Chad K on Jan 24, 2026, 6:07 AM
trying to replace an old fitting, is this one straight male npt over to male jic flare, or am i reading it wrong
Answer by: Customer Support on Jan 25, 2026, 10:44 AM
It’s a straight steel adapter with a male NPTF pipe thread on one end and a male SAE 37 degree (JIC) flare on the other. The NPTF side is 1-1/4-11-1/2 and the JIC flare side is 1-1/16-12.
Question by: Daryl P on Mar 8, 2026, 4:40 PM
what industries is this adapter actually built for? trying to figure out if it fits our operation before I order a handful of em
Answer by: Customer Support on Mar 10, 2026, 6:27 AM
Eaton Aeroquip lists this for use in marine and military applications, chemical processing, pulp and paper, food and beverage processing, and offshore drilling. That covers a pretty wide range of demanding environments, so if your operation falls into any of those categories you are in the right place with this one.

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