3/8 in. x 3/8 in. Male Flare x Female NPT Adapter
3/8 in. x 3/8 in. Male Flare x Female NPT Adapter
Sizes in This Series
Brass SAE 45 male flare x female NPT adapters. Jump to another size or add it straight to your cart:
| Size | Part # | Price | Cart |
| 1/4 in. flare x 3/8 in. FNPT | 10230 | $4.13 | Add to cart |
| 3/8 in. flare x 3/8 in. FNPT (this page) | 10236 | $6.99 | — |
Overview
The Midland 10236 is a brass adapter joining a 3/8 in. SAE 45-degree male flare to a 3/8 in. female NPT port. The flare end runs on a 5/8-18 thread; the threaded end is 3/8-18 NPTF with a 0.81 in. hex. At 1-1/4 in. long and rated for 1000 psi from -65°F to 250°F, it transitions a flared copper or aluminum line into female pipe thread.
Technical Specifications
| Manufacturer Part # | 10236 |
| Fitting Type | Adapter |
| Connection Size | 3/8 in. flare x 3/8 in. FNPT |
| Connection Type | SAE 45° Male Flared x Female NPT |
| Thread Size | 5/8-18 x 3/8-18 |
| Hex Size | 0.81 in. |
| Overall Length | 1-1/4 in. |
| Pressure Rating | 1000 psi |
| Temperature Rating | -65°F to 250°F |
Materials of Construction
| Body | Brass |
| For Use With | Copper, Brass, Aluminum, Steel Hydraulic Tubing |
Typical Applications
This adapter ties a 3/8 in. flared tube line into a 3/8 in. female NPT fitting, valve, or manifold—a common transition in refrigeration, gas, fuel, and instrumentation hookups. The flare seals metal-to-metal; the female NPT end receives a male threaded pipe or nipple with sealant.
Cross-Reference and Interchange
This 3/8 in. flare x 3/8 in. FNPT adapter cross-references to these competitor and industry part numbers: 46-6-6, 466C, 246X6X6, 04046-0606, 10-236, 11707-210, U3-6C, RU3-6C, D466C. Replacing one of these? Match nominal size, connections, and rating, or send us your part number and we will confirm the interchange.
Sizing and Installation Resources
- SAE 45 vs. Inverted Flare Fittings
- NPT, BSPP & JIC Thread Identification Guide
- Teflon Tape vs. Pipe Dope
- NPT Thread Tightening: Turns Past Hand Tight
Frequently Asked Questions
Which end is threaded?
The 3/8 in. NPT end is female; the 3/8 in. flare end is an SAE 45 male flare.
Do I use sealant on the flare?
No. The flare seals metal-to-metal. Use sealant or PTFE tape only on the NPT thread.
What does the female NPT end accept?
Any 3/8 in. male NPT pipe, nipple, or fitting.
What is the pressure rating?
1000 psi at ambient temperature with a properly flared 3/8 in. tube.
⚠ WARNING: This product can expose you to chemicals including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.