Inch

Metric

1

1 1/4

1 1/2

2

2 1/2

3

4

6

8

10

12

BSPT

Metric

NPT

UNC

UNF

Acetic Acid (White Vinegar) (10% Concentration)

Calcium Chloride

Hydrochloric Acid (25% Concentration)

Nitric Acid (10% Concentration)

Phosphoric Acid (85% Concentration)

Sodium Hydroxide (Caustic Soda) (50% Concentration)

Sulfuric Acid (75% Concentration)

Water

0.81"

1"

1 3/64"

1 1/8"

1 5/16"

1 21/64"

1 1/2"

1 21/32"

1 3/4"

1 7/8"

1 29/32"

2 1/8"

2 23/64"

2 3/8"

2 3/4"

2 7/8"

3 1/2"

3 9/16"

3 5/8"

4 1/2"

4 5/8"

6 5/8"

8 5/8"

10 3/4"

12 3/4"

20 mm

25 mm

32 mm

40 mm

50 mm

63 mm

75 mm

90 mm

100° F to 249° F

250° F to 499° F

Yes

No

EAR99