Amazon.com: 20Pack 1/2 Inch PVC Nipple Male Thread Coupling Adapter Connector (Male x Male) 1/2" PVC NPT Male Thread Coupling Pipe Fitting for Thread plumbing Pipe, Home or Industrial Use, Schedule 40 :
LittleWell 1/2 in. Push-Fit x 1/2 in. Male Pipe Thread Brass Coupling ACPF8MPT8 - The Home Depot
Threaded Coupling - 2" Male Thread x 2" Hose Barb - Polypropylene
Pneumatic Manual Male Threaded Coupler - DC2103
Charlotte Pipe 2 in. PVC Schedule 40 MPT x S Male Adapter PVC 02109 1600HD - The Home Depot
Megairon 2" NPT Male x 2" NPT Male Threaded Coupling,Stainless Steel SS304 Cast Pipe Fitting,Nipple - Amazon.com
LCD15004 Valved Panel Mount Male Thread Coupling Body 1/4 NPT - Walmart.com
2" IPS Compression x 2" Male Threaded Transition MPT - Hdpe Supply
Hose coupling with male thread 1" 1/4 for hose Ø 30 mm - Hidraflex
1/2" BSP Male Thread Hex Nipple Union PVC Pipe Fitting Coupler Adapter Water Connector For Garden Irrigation - AliExpress