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System of Measurement
Inch
Metric
Thread Size
2-56
4-40
6-32
8-32
10-24
10-32
12-24
1/4"
-20
1/4"
-28
5/16"
-18
3/8"
-16
1/2"
-13
5/8"
-11
M2
M2.5
M3
M3.5
M4
M5
M6
M8
M10
M12
M16
Fastener Head Type
Domed
Flat
Headless
Hex
Rounded
Socket
Thumb
Length
5
/
3
2
"
0
.
1
9
1
"
0
.
1
9
7
"
0
.
2
2
"
0
.
2
3
8
"
1
/
4
"
0
.
2
8
"
9
/
3
2
"
0
.
2
9
"
1
9
/
6
4
"
0
.
3
"
5
/
1
6
"
0
.
3
2
9
"
1
1
/
3
2
"
0
.
3
5
"
Material
Aluminum
Brass
Plastic
Stainless Steel
Steel
Zinc
Threading
Fully Threaded
Partially Threaded
Drive Style
External Hex
Hex
Phillips
Slotted
Barrel Length
1
/
8
"
3
/
1
6
"
1
/
4
"
5
/
1
6
"
3
/
8
"
0
.
4
7
2
"
1
/
2
"
0
.
5
1
2
"
9
/
1
6
"
5
/
8
"
0
.
6
3
"
0
.
6
6
9
"
3
/
4
"
1
3
/
1
6
"
7
/
8
"
Head Texture
Knurled
Smooth
Barrel Diameter
3/16"
13/64"
7/32"
0.244"
1/4"
5/16"
0.35"
3/8"
25/64"
0.433"
1/2"
5/8"
3/4"
5 mm
6 mm
6.5 mm
7.5 mm
10 mm
12 mm
Head Diameter
0.141"
0.172"
0.188"
0.219"
0.234"
0.25"
0.266"
0.281"
0.31"
0.313"
0.375"
0.394"
0.406"
0.417"
0.422"
0.45"
0.453"
0.469"
0.5"
0.51"
0.516"
0.525"
0.563"
0.578"
0.625"
0.688"
0.75"
3.8 mm
4.5 mm
5.5 mm
6.5 mm
7 mm
8 mm
8.5 mm
10 mm
11.5 mm
13 mm
16 mm
Thread Type
Metric
UNC
UNF
For Material Thickness
0
.
0
6
2
"
t
o
0
.
2
5
"
0
.
0
6
3
"
t
o
0
.
6
2
5
"
1
/
8
"
t
o
3
/
1
6
"
3
/
1
6
"
t
o
1
/
4
"
1
/
4
"
t
o
3
/
8
"
1
/
4
"
t
o
1
/
2
"
1
/
4
"
t
o
7
/
8
"
5
/
1
6
"
t
o
7
/
8
"
5
/
1
6
"
t
o
1
"
0
.
3
1
3
"
t
o
1
.
2
5
"
3
/
8
"
3
/
8
"
t
o
7
/
1
6
"
3
/
8
"
t
o
1
/
2
"
3
/
8
"
t
o
5
/
8
"
7
/
1
6
"
t
o
9
/
1
6
"
Barrel Drive Style
Hex
No Drive
One Way
Phillips
Slotted
Tamper-Resistant Torx
Torx
Thread Length
1/8"
5/32"
11/64"
3/16"
13/64"
7/32"
15/64"
1/4"
9/32"
5/16"
3/8"
0.472"
1/2"
0.512"
0.591"
5/8"
11/16"
0.704"
0.708"
3/4"
0.787"
7/8"
0.906"
15/16"
0.984"
1"
1
1/16"
1.181"
1
3/16"
1.575"
1.969"
2"
3"
3
1/2"
3 mm
3.2 mm
3.5 mm
4 mm
5.5 mm
6 mm
8 mm
Head Height
0
.
0
6
3
"
0
.
0
7
8
"
0
.
0
8
6
"
0
.
0
9
"
0
.
0
9
4
"
0
.
1
0
7
"
0
.
1
1
"
0
.
1
1
2
"
0
.
1
2
5
"
0
.
1
3
"
0
.
1
3
2
"
0
.
1
3
6
"
0
.
1
3
8
"
0
.
1
5
2
"
0
.
1
5
6
"
Finish
Anodized
Black Oxide
Bronze Plated
Chrome Plated
Zinc Plated
Rounded Head Style
Button
Pan
Truss
Thumb Screw Head Shape
Round
Wing
Screw Length
5
/
3
2
"
3
/
1
6
"
0
.
1
8
8
"
1
/
4
"
5
/
1
6
"
2
3
/
6
4
"
3
/
8
"
2
5
/
6
4
"
7
/
1
6
"
1
5
/
3
2
"
0
.
4
7
2
"
1
/
2
"
0
.
5
2
"
9
/
1
6
"
0
.
5
9
1
"
Thread Spacing
Coarse
Fine
Drive Size
5/64"
3/32"
7/64"
9/64"
5/32"
3/16"
1/4"
5/16"
3/8"
1.5 mm
2 mm
2.5 mm
3 mm
4 mm
5 mm
6 mm
8 mm
No. 2
DFARS Specialty Metals
Compliant
Exempt
Not Compliant
REACH
Compliant
Not Compliant
RoHS
Compliant
Compliant with Exemptions
Not Compliant
Export Control Classification Number (ECCN)
EAR99
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