NIBCO 1/2-in Copper Threaded Adapter Fittings in the Copper Pipe & Fittings department at Lowes.com
1/2" FNPT X 1/2" BSPP Male Brass Adapter (NPT X BSPP)
Amazon.com: Brass Pipe Fitting Reducer Adapter G1/2" Female x NPT 1/2" Male Brass Pipe Fitting Reducer Thread Adapter, 1/2 Inch G Female x 1/2 Inch NPT Male 2 Pack (1 Pair) :
M14 Female To 1/2 Inch 1/4 Inch M10*1 Male Pressure Gauge Fittings,m20 Female To 1/2 Inch 1/4 Inch Male Pressure Gauge Adapter - Pipe Fittings - AliExpress
1-1/2" Black Schedule 40 PVC Male Adapter - MIPT x Socket (436-015B)
Brass Pipe Fitting 1/4 Inch Female Pipe 1/2 Inch Male Reducer Adapter Air Hose Adapter Metal Pipe Adapter 2 Pack - - Amazon.com
Proline Series 1/2-in x 3/8-in Threaded Male Adapter Bushing Fitting in the Brass Fittings department at Lowes.com
Sump Pump Garden Hose Adapter 1-1/2" MIP X to 3/4" GHT Thread 1.5" to .75" inch | eBay
CRAFTSMAN 1/2-in to 3/8-in Standard Socket Adapter in the Socket Adapters department at Lowes.com
Brass 1/2 BSPT male to 1/4 BSPT male adapter - From Gyroscope.com