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Order History
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System of Measurement
Inch
Metric
Screw Size
No. 1
No. 2
No. 3
No. 4
No. 5
No. 6
No. 8
No. 10
No. 12
1/8"
5/32"
3/16"
7/32"
1/4"
9/32"
5/16"
3/8"
7/16"
Thread Size
1-64
1-72
2-56
2-64
3-48
3-56
4-36
4-40
4-48
5-40
5-44
6-32
6-36
6-40
8-32
8-36
8-40
10-24
Diameter
0.073"
0.086"
3/32"
0.112"
1/8"
0.138"
5/32"
0.164"
3/16"
7/32"
1/4"
9/32"
5/16"
For Use With
Bolts
Drill Bits
Nails
Nuts
Pins
Pipe
Pipe Fittings
Rivets
Screws
Threaded Rods
Tube Fittings
Tubing
Wire
Thread Type
Acme
BSPP
BSPT
BSW
Metric
Metric Trapezoidal
NPT
UNC
UNF
Material
Brass
Copper
Plastic
Stainless Steel
Steel
Height
1
5/8"
2
3/8"
3
3/16"
3
1/2"
3
3/4"
4
1/4"
5
1/8"
5
3/8"
39"
Thread Location
External
Internal
Width
3/4"
3"
3
3/8"
5
1/8"
5
1/4"
7
1/2"
8
11/16"
9"
10
1/2"
Drill Bit Size
1/32"
3/64"
1/16"
5/64"
3/32"
7/64"
1/8"
9/64"
5/32"
11/64"
3/16"
13/64"
7/32"
15/64"
1/4"
17/64"
9/32"
19/64"
Manufacturer
Mitutoyo
Starrett
Thread Pitch
0.25 mm
0.3 mm
0.35 mm
0.4 mm
0.45 mm
0.5 mm
0.55 mm
0.6 mm
0.65 mm
0.7 mm
0.75 mm
0.8 mm
0.85 mm
0.9 mm
1 mm
1.1 mm
1.2 mm
1.25 mm
Pipe Material
Brass
PVC
Steel
Thickness
1/64"
3/64"
5/64"
3/32"
7/64"
1/8"
1/2"
Number of Identifiers
12
16
22
27
28
30
50
51
52
Export Control Classification Number (ECCN)
EAR99
REACH
Compliant
Not Compliant
DFARS Specialty Metals
Exempt
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
3
1/2
4
5
6
RoHS
Compliant
Not Compliant
Container Type
Folding Case
Pouch
For Pipe Fitting Size
1/16
1/8
1/4
3/8
1/2
3/4
1
1
1/4
1
1/2
2
Graduation Location
Back
Front
Threads per Inch
1
1
1/3
1
1/2
1
3/4
2
2
1/4
2
3/8
2
1/2
2
5/8
2
3/4
2
7/8
3
3
1/4
3
1/2
4
4
1/2
5
5
1/2
For Nut Size
No. 2
No. 3
No. 4
No. 5
No. 6
No. 8
No. 10
No. 12
1/4"
5/16"
3/8"
7/16"
1/2"
9/16"
5/8"
M3
M4
M5
M6
M8
M10
M11
M12
M13
M14
M17
M19
M22
M24
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40 Products
Measuring and Inspecting
Thread Size Identifiers
Confirm your fastener's thread size, pitch, or threads per inch
38 products
Communication
Reference Charts
Check decimal equivalents, drill sizes, or specifications for socket screws
2 products
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