Thread Charts

DASH SIZE2345678101214162024324048
NPTF Pipe
Thread
1/8–271/4–183/8–181/2–143/4–141–11-1/21-1/4–11-1/21-1/2–11-1/22–11-1/22-1/2–83–8
NPSM Swivel
Thread
1/8–271/4–183/8–181/2–143/4–141–11-1/21-1/4–11-1/21-1/2–11-1/22–11-1/2
JIC 37° Flare Thread5/16–243/8–247/16–201/2–209/16–183/4–167/8–141-1/16–121-3/16–121-5/16–121-5/8–121-7/8–122-1/2–123–123-1/2–12
SAE 45° Flare
Thread
5/16–243/8–247/16–201/2–205/8–1811/16–163/4–167/8–141-1/16–14
SAE O-Ring
Thread
5/16–243/8–247/16–201/2–209/16–183/4–167/8–141-1/16–121-3/16–121-5/16–121-5/8–121-7/8–122-1/2–12
Flat-Face Thread9/16–1811/16–1613/16–161–141-3/16–121-7/16–121-11/16–122–12
Inverted Flare
Thread
5/16–283/8–247/16–241/2–205/8–1811/16–183/4–187/8–181/16–16
Compression
Thread
5/16–243/8–247/16–241/2–249/16–245/8–2411/16–2013/16–181–18
Code 61 Flange
Head O.D.
1.191.341.501.752.002.382.813.314.00
Code 62 Flange Head O.D.1.251.621.882.122.503.12
BSPP Thread1/8–281/4–193/8–191/2–145/8–143/4–141–111-1/4–111-1/2–112–11
BSPT Thread1/8–281/4–193/8–191/2–145/8–143/4–141–111-1/4–111-1/2–112–11
Japanese Pipe Tapered Thread1/8–281/4–193/8–191/2–145/8–143/4–141–111-1/4–111-1/2–112–11
Japanese Flare
Thread
1/8–281/4–193/8–191/2–145/8–143/4–141–111-1/4–111-1/2–112–11
Copper/Nylon Air
Brake Thread
7/16–2417/32–2411/16–2013/16–181–18
METRIC (mm)8101214161820222426303336424552
Whitworth8X1.010X1.012X1.516X1.518X1.522X1.5
MDLM12X1.5M14X1.5M16X1.5M18X1.5M22X1.5M26X1.5M30X2.0M36X2.0M45X2.0M52X2.0
MDHM16X1.5M18X1.5M20X1.5M24X1.5M30X2.0M36X2.0M42X2.0M45X2.0M52X2.0
KomatsuM18X1.5M22X1.5M24X1.5M30X1.5M33X1.5M36X1.5M42X1.5
FrenchM20X1.5M24X1.5M30X1.5M36X1.5M45X1.5M52X1.5