3/8 Coupling Pipe Fitting - Hi-Line Inc.

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PlumbShop Brass Compression Fitting, 3/8-in OD x 1/2-in MIP, 1-pk

Push-to-Connect, Flame-Free Refrigerant Line Fittings for HVAC/R

1/2 MPT x 3/8 FPT, Brass Pipe Bushing - 3220X8X6 - Hi-Line Inc.

3/8 inch hydraulic hose NPT 3/8

12-8 MHN-SS Parker, Pipe Fittings Hex Nipple

3/8 High Flow Body Size: 3/8 Inch body size air fittings provide up to 70% more air flow than 1/4 Inch body air fittings, 1/4 Inch body air fittings

3/8 High Flow Air Coupler, Industrial M-Type Fittings, 3/8 Inch Flow Size, 1/4 Inch Female Threads Size, Steel Material, 300PSI, 10 Pieces Air

QUICKFITTING 1/2 in. Push-to-Connect Brass Polybutylene Conversion

KOOTANS 3/8 NPT x 3/8 NPT Male Solid Brass Hex Nipples, Heavy

ABB H119-3/8EGC Superstrut® Coupling Rod 3/8 in Internal Threaded

How to measure the thread size of air line couplings and adaptors

Southland 1/2 in. x 3/8 in. Black Malleable Iron FPT x FPT

YUHX Feed Water Adapter 3/8 x 1/4 or 3/8 Add-A-Tee

Aluminum Pipe Fittings - Hi-Line Fittings

316 Stainless Steel High Pressure Fitting, 9/16-18 High Pressure