INSTRUMENT FITTINGS

Tube Fittings

Tube-Fittings.jpg

How to Order


SG-Lok tube fittings parts numbers are constructed from symbols that identify the style and size of the fitting and material used.

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SG-Lok Tube End Designator


Fractional Tube

Tube O.D.

1/16”

1/8”

3/16”

1/4"

5/16”

3/8”

1/2”

5/8”

3/4"

7/8”

71”

1-1/4”

1-1/2”

12”

Designation

1

2

3

4

5

6

8

10

12

14

16

20

24

32


Metirc Tube

Tube O.D.

2mm

3mm

4mm

6mm

8mm

10mm

12mm

14mm

15mm

16mm

20mm

22mm

25mm

28mm

30mm

32mm

38mm

Designation

2M

3M

4M

6M

8M

10M

12M

14M

15M

16M

20M

22M

25M

28M

30M

32M

38M


Pipe Thread Designator

Nominal Size

1/16”

1/8”

1/4”

3/8"

1/2”

3/4”

1”

1-1/4”

1-1/2”

2"

Applicable Specifications

NPT

1N

2N

4N

6N

8N

12N

16N

20N

24N

32N

ANSI B1 20. 1 (NPT)

ISO Tapered

1R

2R

4R

6R

8R

12R

16R

20R

24R

32R

JS B0203IPT DIN 2999. ISO 7/1 BS 21(BSPT)

ISO Parallel

1G

2G

4G

6G

8G

12G

16G

20G

24G

32G

JIS B0202(PF), DIN ISO 228/, BS 2779(BSPP)

Unified Screw

1U

2U

4U

6U

8U

12U

16U

20U

24U

32U

American Standard Unified Screw Thread



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