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System of Measurement
Inch
Metric
Thread Size
0-80
1-64
1-72
2-56
2-64
3-48
3-56
4-40
4-48
5-40
5-44
6-32
6-40
8-32
8-36
10-24
10-32
12-24
Thread Type
Acme
BSPP
BSPT
Metric
NPSM
NPT
NPTF
UNC
UNEF
UNF
UNS
Thread Fit
Acme Class 2G
Metric Class 6H
Unified Standard Class 2B
Unified Standard Class 3B
Certificate Type
Accuracy Certificate Traceable to NIST
Calibration Certificate Traceable to NIST
Pitch
0.35 mm
0.4 mm
0.45 mm
0.5 mm
0.6 mm
0.7 mm
0.75 mm
0.8 mm
1 mm
1.25 mm
1.5 mm
1.75 mm
2 mm
2.5 mm
3 mm
3.5 mm
4 mm
Plug Gauge Size
0.0110"
0.0120"
0.0130"
0.0140"
0.0150"
0.0160"
0.0170"
0.0180"
0.0190"
0.0200"
0.0210"
0.0220"
0.0250"
0.0270"
0.0280"
0.0290"
0.0300"
0.0310"
Gauge Measurement Type
Go
No-Go
Thread Direction
Left Hand
Right Hand
Pipe Size
1/16
1/8
1/4
3/8
1/2
3/4
1
1
1/4
1
1/2
2
2
1/2
3
4
Size-Checking Gauge Class
X
Z
REACH
Compliant
Not Compliant
RoHS
Compliant
Not Compliant
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Yes
No
Hardness
Rockwell C60
Rockwell C70
DFARS Specialty Metals
Exempt
Export Control Classification Number (ECCN)
EAR99
Length
5
1/4"
5
15/32"
5
1/2"
6
1/8"
6
19/32"
6
3/4"
7
3/16"
7
1/4"
7
1/2"
7
17/32"
7
21/32"
7
3/4"
8"
8
1/4"
Increment
0.0001"
0.0005"
0.001 mm
0.01 mm
End Color
Green
Red
Screw Size
No. 0
No. 1
No. 2
No. 4
No. 5
No. 6
No. 8
No. 10
No. 12
1/4"
5/16"
3/8"
7/16"
1/2"
M3
M3.5
M4
M5
M6
M7
M8
M9
M10
M11
M12
Surface Smoothness, RMS
2 μin
4 μin
8 μin
Color
Green
Red
Handle Length
1
29/32"
2
15/32"
3
1/8"
3
19/32"
4
3/16"
Specifications Met
ASME B18.3
ASME B89.1.5
Stem Diameter
0.009"
0.013"
0.018"
0.022"
0.025"
0.032"
0.042"
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497 Products
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The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)