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Steel Adapter, 3/8-18 Male NPT To 1/2-20 Male JIC 37 deg Flare, Straight

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Description & Features

This steel adapter features a 3/8-18 male NPT to 1/2-20 male JIC 37 deg flare and a straight body style.

Applications for this Eaton Aeroquip adapter include marine/military, chemical processing, pulp and paper industries, food and beverage processing, and off-shore drilling.

SKU: 2021-6-5S

Supplier Part Number (MPN): 2021-6-5S

Alternate Part Numbers: C1AV22, MI-00310100, MINO-00015F60061

Specifications

A
1.42
Alternate Part Numbers
Alternate Part Number C1AV22, Alternate Part Number MI-00310100, Alternate Part Number MINO-00015F60061
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
0.38
End Size 2
0.50
End Type 1
NPTF
End Type 2
SAE 37
Minimum Working Temperature
-40
Supplier Part Number
2021-6-5S
Thread 1
3/8-18
Thread 2
1/2-20
Thread Sealant
No
Tube O.D.
0.31
Tube O.D.
0.31
Product Weight
0.10 lbs

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Product Questions & Answers (3)

Question by: Troy R on Mar 16, 2026, 6:41 PM
Will this fitting work alright for connecting a 3/8" NPT pipe to a 1/2" JIC flared fitting?
Answer by: Customer Support on Mar 17, 2026, 7:15 PM
This straight adapter is designed specifically for that purpose, connecting a 3/8-18 Male NPT to a 1/2-20 Male JIC 37-degree flare.
Question by: Patty H on Nov 10, 2025, 7:09 PM
i’ve got a hose end that’s 1/2-20 JIC, and the port on my manifold is 3/8-18 NPT. is this the straight adapter that ties those two together?
Answer by: Customer Support on Nov 12, 2025, 8:47 AM
For that hookup, yes. It’s a straight steel adapter with a 3/8-18 male NPT on one end and a 1/2-20 male JIC 37 degree flare on the other.
Question by: Rusty P on Oct 15, 2025, 11:26 AM
what industries is this adapter typically used in, and is it gonna hold up in wet or corrosive environments?
Answer by: Customer Support on Oct 16, 2025, 11:44 AM
Marine, offshore drilling, chemical processing, pulp and paper, and food and beverage processing are all listed applications for this part. Steel construction means it can handle the demands of those environments, and the fact that it shows up in marine and offshore use suggests it holds its own where moisture and exposure are part of the job.