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System of Measurement
Inch
Metric
Thread Size
4-40
6-32
8-32
10-24
10-32
12-24
1/4"
-20
1/4"
-28
5/16"
-18
5/16"
-24
3/8"
-12
3/8"
-16
3/8"
-24
7/16"
-14
7/16"
-20
1/2"
-10
1/2"
-13
1/2"
-20
Length
1/4"
3/8"
0.46"
0.48"
1/2"
0.52"
0.54"
0.56"
5/8"
3/4"
0.95"
1"
1.1"
1
1/2"
2"
2
1/2"
3"
4"
5"
6"
8 mm
10 mm
12 mm
16 mm
20 mm
25 mm
30 mm
35 mm
40 mm
50 mm
60 mm
80 mm
Material
Brass
Iron
Plastic
Stainless Steel
Steel
Zinc Alloy
Fastener Head Type
Flat
Rounded
Thumb
Head Diameter
0.24"
0.321"
0.33"
0.365"
3/8"
0.385"
0.4"
7/16"
0.46"
1/2"
0.507"
0.53"
0.57"
0.59"
0.61"
5/8"
0.68"
0.691"
3/4"
0.785"
7/8"
8 mm
11 mm
13 mm
16 mm
20 mm
23 mm
Nut Type
Clip On
Flange
Handle
Locknut
Press Fit
Rivet Mount
Thumb
Head Width
49/64"
0.88"
57/64"
1
1/16"
1
5/64"
1.1"
1
19/64"
1
3/8"
1
1/2"
1
11/16"
1
3/4"
1
13/16"
1
7/8"
2
1/4"
2
5/8"
17.6 mm
20 mm
23 mm
26 mm
28 mm
31 mm
33 mm
37 mm
39 mm
50 mm
Thread Pitch
0.5 mm
0.7 mm
0.8 mm
1 mm
1.25 mm
1.5 mm
1.75 mm
2 mm
2.5 mm
Wing Nut Profile
Flanged
Standard
Thread Type
Acme
Metric
UNC
UNF
Head Height
0.086"
0.116"
0.13"
0.15"
0.153"
0.205"
0.24"
0.25"
0.36"
25/64"
0.43"
0.44"
29/64"
1/2"
39/64"
5/8"
23/32"
3/4"
13/16"
7/8"
1"
1
3/16"
8.6 mm
10.5 mm
11.5 mm
13 mm
14 mm
16 mm
17 mm
18 mm
20 mm
24 mm
Width
5/8"
3/4"
7/8"
1"
1
1/32"
1
3/32"
1
1/8"
1
1/4"
1
3/8"
1
15/32"
1
1/2"
1
5/8"
1
7/8"
1
15/16"
2"
2
1/4"
2
1/2"
2
3/4"
Finish
Corrosion-Resistant Coated
Zinc Plated
Thread Spacing
Coarse
Fine
Thread Fit
Acme Class 2G
Metric Class 6g
Metric Class 6H
Unified Standard Class 2A
Unified Standard Class 2B
REACH
Compliant
Not Compliant
RoHS
Compliant
Compliant with Exemptions
Not Compliant
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Yes
No
DFARS Specialty Metals
Compliant
Exempt
Not Compliant
Export Control Classification Number (ECCN)
EAR99
Height
23/64"
3/8"
25/64"
7/16"
29/64"
1/2"
37/64"
19/32"
5/8"
23/32"
3/4"
51/64"
7/8"
1"
1
1/8"
1
3/16"
1
1/4"
1
3/8"
Thread Length
1
7/8"
2
3/4"
2
7/8"
2
31/32"
3"
3
3/4"
3
7/8"
3
31/32"
4
7/8"
5
7/8"
6"
Performance
Corrosion Resistant
Finish-Your-Own
Removable
Vibration Resistant
Flange Diameter
1/2"
5/8"
3/4"
7/8"
Hardness
Rockwell B67
Rockwell B72
Rockwell B97
Not Rated
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448 Products
Thumb Screws
Stainless Steel Wing Thumb Screws
Corrosion resistant with a grip-friendly design
65 products
Steel and Iron Wing Thumb Screws
A wing shape for more leverage than spade head thumb screws
68 products
Other Products
Thumb Nuts
Easy to tighten and loosen by hand for making frequent adjustments
229 products
Captive Panel Screws
Secure panels and enclosures while still having access to them
33 products
Lead Screw Nuts
Mate with lead screws to move components in a straight line
24 products
Anchor Toggles
Replace your anchor toggle if it falls when removing your toggle bolt
5 products
Anchors
Secure anything from signs to heavy machinery in concrete, brick, and drywall
29 products
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)