Precision Pipe Fittings - Hex Reducing Nipple
Thread Size NPT Dimension in mm Part Number
MM   A D F(HEX)  
1/4 1/8 32 5 14 MEW-HRN 4-2
3/8 1/4 38 7 17 MEW-HRN 6-4
1/2 1/4 42 7 22 MEW-HRN 8-4
1/2 3/8 42 9.5 22 MEW-HRN 8-6
3/4 3/8 43 9.5 28 MEW-HRN 12-6
3/4 1/2 48 12 28 MEW-HRN 12-8
1 1/2 58 12 35 MEW-HRN 16-8
1 3/4 58 15 35 MEW-HRN 16-12