Owings, Maryland 38.6856 N 76.6752 W | Just found a handy little chart, will try to attach for others !!!!!
SAE J514 Straight Thread O-Ring Boss (ORB)
Recommended by the NFPA for optimal leakage control in medium and high pressure hydraulic systems. The male fitting has a straight thread and O-ring. The female port has a straight thread, a machined surface (minimum spotface) and a chamfer to accept the O-ring. The seal take place by compressing the O-ring in the chamfer. The threads hold the connection mechanically.
Inch Size Dash Size Nominal Thread Size Male Thread OD Female Thread ID
1/8 -02 5/16-24 5/16" (.31) 9/32" (.27)
3/16 -03 3/8-24 3/8" (.38) 11/32" (.34)
1/4 -04 7/16-20 7/16" (.44) 13/32" (.39)
5/16 -05 1/2-20 1/2" (.50) 15/32" (.45)
3/8 -06 9/16-18 9/16" (.56) 17/32" (.51)
1/2 -08 3/4-16 3/4" (.75) 11/16" (.69)
5/8 -10 7/8-14 7/8" (.88) 13/16" (.81)
3/4 -12 1 1/16-12 1 1/16" (1.06) 1" (.98)
7/8 -14 1 3/16-12 1 3/16" (1.19) 1 1/8" (1.10)
1 -16 1 5/16-12 1 5/16" (1.31) 1 1/4" (1.23)
1 1/4 -20 1 5/8-12 1 5/8" (1.63) 1 9/16 (1.54)
1 1/2 -24 1 7/8-12 1 7/8" (1.88) 1 13/16" (1.79)
2 -32 2 1/2-12 2 1/2-12" (2.50) 2 7/16" (2.42)
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Hydraulic hose/fitting sizes ??????
