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Sanitary Sizing Guide SAE Dash Sizing Chart NPT Pipe Thread Chart

Sanitary Fittings Sizing Guide

These actual size drawings are provided to eliminate sizing errors when specifying sanitary fittings. The outside diameter is the same for 1/8", 1/4", 3/8", 1/2" and 3/4" I.D., “mini” sizes (.0992 O.D.). The same holds true for the 1" and 1-1/2" I.D. sizes(1.984" O.D.). The 2", 2-1/2" and 3" I.D. have specific O.D. diameters. For your convenience and ordering accuracy, all of these drawings may be used as sizing, I.D. and O.D. patterns. For 4" (not pictured): 3.75" ID and 4.675" OD

 
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SAE Dash Size Chart
Nom SAE
Dash Size
Nom Tube O.D. Inch
-2 1/8"
-3 3/16"
-4 1/16"
-5 5/16"
-6 3/8"
-8 1/2"
-10 5/8"
-12 3/4"
-14 7/8"
-16 1"
-20 1-1/4"
-24 1-1/2"
-32 2"
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150 PSI Threaded SS Fitting; Dimensions to ANSI 16.3; Pressure to ANSI 16.5 Class 150LB- Material ASTM A351 CF8 AISI304 or ASTM A351 CF8M AISI316

Pipe Size
(inches)

Threads per Inch

TPI- Pitch

Nominal Outside Pipe Diameter

OD
(inches)

1/16"

27

0.313
1/8" 27 0.405
1/4" 18 0.54
3/8" 18 0.675
1/2" 14 0.84
3/4" 14 1.05
1" 11-1/2 1.315
1-1/4" 11-1/2 1.66
1-1/2" 11-1/2 1.9
2" 11-1/2 2.375
2-1/2" 8 2.875
3" 8 3.5
3-1/2" 8 4
4" 8 4.5
4-1/2" 8 5
5" 8 5.563
6" 8 6.625
8" 8 8.625
10" 8 10.75
12" 8 12.75
14" 8 14
16" 8 16
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