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Steel Adapter, 1/4-18 Male NPT To 3/4-16 Male JIC 37 deg Flare, Straight

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Description & Features

This straight steel adapter is part of the Danfoss / Eaton 2021 series of pipe to 37° Flare steel adapters. Featuring a 1/4-18 Male NPT to 3/4-16 Male JIC 37 deg Flare connection, this adapter ensures secure and reliable connections in demanding environments.

Designed for use across diverse applications including marine and military, chemical processing, pulp and paper industries, food and beverage processing, and off-shore drilling. With a minimum working temperature of -40, this steel adapter is built to withstand extreme conditions. The thread sealant is 0. Thread 1 is 1/4-18 and Thread 2 is 3/4-16.

SKU: 2021-4-8S

Supplier Part Number (MPN): 2021-4-8S

Alternate Part Numbers: C1AV18, MI-00310181, MINO-00015F60070

Specifications

A
1.53
Alternate Part Numbers
Alternate Part Number C1AV18, Alternate Part Number MI-00310181, Alternate Part Number MINO-00015F60070
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
0.25
End Size 2
0.75
End Type 1
NPTF
End Type 2
SAE 37
Minimum Working Temperature
-40
Supplier Part Number
2021-4-8S
Thread 1
1/4-18
Thread 2
3/4-16
Thread Sealant
No
Tube O.D.
0.50
Tube O.D.
0.5
Product Weight
0.11 lbs

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Product Questions & Answers (1)

Question by: Brett H on Mar 21, 2026, 8:43 PM
got a hose end that’s 3/4-16 JIC, and the port on my block is 1/4-18 NPT. is this the straight piece to tie those together?
Answer by: Customer Support on Mar 23, 2026, 6:16 AM
For hooking those two thread types together, this adapter is a straight steel fitting with a 1/4-18 male NPT on one end and a 3/4-16 male JIC 37 degree flare on the other.