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Thumb Nut Profile Thumb Nut Profile |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Wing Nut Profile Wing Nut Profile |
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About Nuts, Materials, and Finishes
More
18-8 Stainless Steel Flanged Knurled-Head Thumb Nuts

These thumb nuts have good chemical resistance and may be mildly magnetic. The flange distributes the load over a large area and reduces stress where the nut meets the material surface. A knurled head provides a slip-resistant grip for controlled adjustment.
Passivated stainless steel nuts provide added protection against oxidation and corrosion.
For technical drawings and 3-D models, click on a part number.
Collar | ||||||||
---|---|---|---|---|---|---|---|---|
Thread Size | Dia. | Ht. | Head Dia. | Ht. | Threading | Thread Dp. | Each | |
18-8 Stainless Steel | ||||||||
0-80 | 5/32" | 1/8" | 7/32" | 1/4" | Fully Threaded | __ | 000000000 | 00000 |
1-72 | 5/32" | 1/8" | 7/32" | 1/4" | Fully Threaded | __ | 000000000 | 0000 |
2-56 | 3/16" | 1/8" | 1/4" | 1/4" | Fully Threaded | __ | 000000000 | 0000 |
3-48 | 1/4" | 1/8" | 5/16" | 1/4" | Fully Threaded | __ | 000000000 | 0000 |
4-40 | 1/4" | 1/8" | 5/16" | 1/4" | Fully Threaded | __ | 000000000 | 0000 |
4-40 | 1/4" | 1/8" | 5/16" | 5/16" | Partially Threaded | 7/32" | 000000000 | 0000 |
5-40 | 1/4" | 1/8" | 5/16" | 1/4" | Fully Threaded | __ | 000000000 | 0000 |
6-32 | 11/32" | 5/32" | 3/8" | 9/32" | Fully Threaded | __ | 000000000 | 0000 |
8-32 | 3/8" | 5/32" | 7/16" | 9/32" | Fully Threaded | __ | 000000000 | 0000 |
8-32 | 3/8" | 5/32" | 7/16" | 3/8" | Partially Threaded | 1/4" | 000000000 | 0000 |
10-24 | 13/32" | 3/16" | 1/2" | 11/32" | Fully Threaded | __ | 000000000 | 0000 |
10-32 | 13/32" | 3/16" | 1/2" | 11/32" | Fully Threaded | __ | 000000000 | 0000 |
12-24 | 13/32" | 3/16" | 1/2" | 11/32" | Fully Threaded | __ | 000000000 | 0000 |
1/4"-20 | 15/32" | 7/32" | 9/16" | 3/8" | Fully Threaded | __ | 000000000 | 0000 |
1/4"-20 | 15/32" | 7/32" | 9/16" | 1/2" | Partially Threaded | 5/16" | 000000000 | 0000 |
1/4"-28 | 15/32" | 7/32" | 9/16" | 3/8" | Fully Threaded | __ | 000000000 | 0000 |
5/16"-18 | 17/32" | 7/32" | 5/8" | 13/32" | Fully Threaded | __ | 000000000 | 0000 |
5/16"-24 | 17/32" | 7/32" | 5/8" | 13/32" | Fully Threaded | __ | 000000000 | 0000 |
3/8"-16 | 5/8" | 1/4" | 3/4" | 15/32" | Fully Threaded | __ | 000000000 | 0000 |
3/8"-24 | 5/8" | 1/4" | 3/4" | 15/32" | Fully Threaded | __ | 000000000 | 00000 |
7/16"-14 | 11/16" | 5/16" | 1" | 17/32" | Fully Threaded | __ | 000000000 | 00000 |
7/16"-20 | 11/16" | 5/16" | 1" | 17/32" | Fully Threaded | __ | 000000000 | 00000 |
1/2"-13 | 3/4" | 3/8" | 1" | 5/8" | Fully Threaded | __ | 000000000 | 00000 |
Black-Oxide 18-8 Stainless Steel | ||||||||
2-56 | 3/16" | 1/8" | 1/4" | 1/4" | Fully Threaded | __ | 000000000 | 0000 |
4-40 | 1/4" | 1/8" | 5/16" | 1/4" | Fully Threaded | __ | 000000000 | 0000 |
6-32 | 11/32" | 5/32" | 3/8" | 9/32" | Fully Threaded | __ | 000000000 | 0000 |
8-32 | 3/8" | 5/32" | 7/16" | 9/32" | Fully Threaded | __ | 000000000 | 0000 |
10-24 | 13/32" | 3/16" | 1/2" | 11/32" | Fully Threaded | __ | 000000000 | 0000 |
10-32 | 13/32" | 3/16" | 1/2" | 11/32" | Fully Threaded | __ | 000000000 | 00000 |
1/4"-20 | 15/32" | 7/32" | 9/16" | 3/8" | Fully Threaded | __ | 000000000 | 00000 |
5/16"-18 | 17/32" | 7/32" | 5/8" | 13/32" | Fully Threaded | __ | 000000000 | 00000 |
3/8"-16 | 5/8" | 1/4" | 3/4" | 15/32" | Fully Threaded | __ | 000000000 | 00000 |
Passivated 18-8 Stainless Steel | ||||||||
6-32 | 11/32" | 5/32" | 3/8" | 9/32" | Fully Threaded | __ | 000000000 | 0000 |
8-32 | 3/8" | 5/32" | 7/16" | 9/32" | Fully Threaded | __ | 000000000 | 0000 |
10-24 | 13/32" | 3/16" | 1/2" | 11/32" | Fully Threaded | __ | 000000000 | 0000 |
10-32 | 13/32" | 3/16" | 1/2" | 11/32" | Fully Threaded | __ | 000000000 | 00000 |
1/4"-20 | 15/32" | 7/32" | 9/16" | 3/8" | Fully Threaded | __ | 000000000 | 00000 |
1/4"-28 | 15/32" | 7/32" | 9/16" | 3/8" | Fully Threaded | __ | 000000000 | 00000 |
5/16"-18 | 17/32" | 7/32" | 5/8" | 13/32" | Fully Threaded | __ | 000000000 | 00000 |
3/8"-16 | 5/8" | 1/4" | 3/4" | 15/32" | Fully Threaded | __ | 000000000 | 00000 |
3/8"-24 | 5/8" | 1/4" | 3/4" | 15/32" | Fully Threaded | __ | 000000000 | 00000 |
7/16"-14 | 11/16" | 5/16" | 1" | 17/32" | Fully Threaded | __ | 000000000 | 00000 |
1/2"-13 | 3/4" | 3/8" | 1" | 5/8" | Fully Threaded | __ | 000000000 | 00000 |
Metric 18-8 Stainless Steel Flanged Knurled-Head Thumb Nuts

Made from 18-8 stainless steel, these thumb nuts have good chemical resistance and may be mildly magnetic. The flange distributes the load over a large area and reduces stress where the nut meets the material surface. A knurled head provides a slip-resistant grip for controlled adjustment.
Passivated stainless steel nuts provide added protection against oxidation and corrosion.
For technical drawings and 3-D models, click on a part number.
Thread | Collar | ||||||
---|---|---|---|---|---|---|---|
Size | Pitch, mm | Dia., mm | Ht., mm | Head Dia., mm | Ht., mm | Each | |
18-8 Stainless Steel | |||||||
M1.6 | 0.35 | 4 | 4 | 6 | 6 | 000000000 | 00000 |
M1.6 | 0.35 | 4 | 4 | 8 | 6 | 000000000 | 0000 |
M2 | 0.4 | 4 | 2 | 6 | 4 | 000000000 | 0000 |
M2 | 0.4 | 4 | 4 | 8 | 6 | 000000000 | 0000 |
M2.5 | 0.45 | 4 | 5 | 12 | 7 | 000000000 | 0000 |
M2.5 | 0.45 | 5 | 3 | 6 | 6 | 000000000 | 0000 |
M2.5 | 0.45 | 6 | 3 | 8 | 6 | 000000000 | 0000 |
M3 | 0.5 | 6 | 3 | 8 | 6 | 000000000 | 0000 |
M3 | 0.5 | 6 | 5 | 16 | 8 | 000000000 | 0000 |
M3.5 | 0.6 | 9 | 4 | 10 | 7 | 000000000 | 0000 |
M4 | 0.7 | 8 | 6 | 12 | 10 | 000000000 | 0000 |
M4 | 0.7 | 8 | 6 | 20 | 10 | 000000000 | 00000 |
M4 | 0.7 | 9 | 4 | 10 | 7 | 000000000 | 0000 |
M5 | 0.8 | 10 | 7.5 | 16 | 12 | 000000000 | 0000 |
M5 | 0.8 | 10 | 7.5 | 24 | 12 | 000000000 | 00000 |
M5 | 0.8 | 11 | 5 | 13 | 9 | 000000000 | 0000 |
M6 | 1 | 12 | 5 | 13 | 9 | 000000000 | 0000 |
M6 | 1 | 12 | 10 | 20 | 15 | 000000000 | 00000 |
M6 | 1 | 12 | 10 | 24 | 15 | 000000000 | 00000 |
M8 | 1.25 | 16 | 6 | 19 | 12 | 000000000 | 0000 |
M8 | 1.25 | 16 | 12 | 24 | 18 | 000000000 | 00000 |
M8 | 1.25 | 16 | 12 | 31.8 | 18 | 000000000 | 00000 |
M10 | 1.5 | 20 | 15 | 26 | 23 | 000000000 | 00000 |
M10 | 1.5 | 20 | 15 | 31.8 | 23 | 000000000 | 00000 |
M12 | 1.75 | 24 | 20 | 31.8 | 30 | 000000000 | 00000 |
Black-Oxide 18-8 Stainless Steel | |||||||
M2.5 | 0.45 | 5 | 3 | 6 | 6 | 000000000 | 0000 |
M3 | 0.5 | 6 | 3 | 8 | 6 | 000000000 | 0000 |
M3.5 | 0.6 | 9 | 4 | 10 | 7 | 000000000 | 0000 |
M4 | 0.7 | 9 | 4 | 10 | 7 | 000000000 | 0000 |
M5 | 0.8 | 11 | 5 | 13 | 9 | 000000000 | 0000 |
M6 | 1 | 12 | 5 | 13 | 9 | 000000000 | 0000 |
M8 | 1.25 | 16 | 6 | 19 | 12 | 000000000 | 00000 |
Passivated 18-8 Stainless Steel | |||||||
M2.5 | 0.45 | 5 | 3 | 6 | 6 | 000000000 | 0000 |
M3 | 0.5 | 6 | 3 | 8 | 6 | 000000000 | 0000 |
M4 | 0.7 | 9 | 4 | 10 | 7 | 000000000 | 0000 |
M5 | 0.8 | 11 | 5 | 13 | 9 | 000000000 | 0000 |
M6 | 1 | 12 | 5 | 13 | 9 | 000000000 | 0000 |
M8 | 1.25 | 16 | 6 | 19 | 12 | 000000000 | 00000 |
Super-Corrosion-Resistant 316 Stainless
Steel Flanged Knurled-Head Thumb Nuts

These thumb nuts have excellent chemical resistance and can be used in saltwater environments. The flange distributes the load over a large area and reduces stress where the nut meets the material surface. A knurled head provides a slip-resistant grip for controlled adjustment. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Collar | |||||||
---|---|---|---|---|---|---|---|
Thread Size | Dia. | Ht. | Head Dia. | Ht. | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||
4-40 | 1/4" | 1/8" | 5/16" | 1/4" | 1 | 000000000 | 00000 |
6-32 | 11/32" | 5/32" | 3/8" | 9/32" | 1 | 000000000 | 00000 |
8-32 | 3/8" | 5/32" | 7/16" | 9/32" | 1 | 000000000 | 00000 |
10-24 | 13/32" | 3/16" | 1/2" | 11/32" | 1 | 000000000 | 00000 |
10-32 | 13/32" | 3/16" | 1/2" | 11/32" | 1 | 000000000 | 00000 |
1/4"-20 | 15/32" | 7/32" | 9/16" | 3/8" | 1 | 000000000 | 00000 |
5/16"-18 | 17/32" | 7/32" | 5/8" | 13/32" | 1 | 000000000 | 00000 |
3/8"-16 | 5/8" | 1/4" | 3/4" | 15/32" | 1 | 000000000 | 00000 |
1/2"-13 | 13/16" | 1/4" | 1" | 1/2" | 1 | 000000000 | 00000 |
Brass Flanged Knurled-Head Thumb Nuts

These thumb nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. The flange distributes the load over a large area and reduces stress where the nut meets the material surface. A knurled head provides a slip-resistant grip for controlled adjustment.
Zinc-plated brass nuts are more corrosion resistant than plain brass nuts.
For technical drawings and 3-D models, click on a part number.
Collar | |||||||
---|---|---|---|---|---|---|---|
Thread Size | Dia. | Ht. | Head Dia. | Ht. | Pkg. Qty. | Pkg. | |
Brass | |||||||
0-80 | 5/32" | 1/8" | 7/32" | 1/4" | 1 | 000000000 | 00000 |
1-72 | 3/16" | 1/8" | 1/4" | 1/4" | 1 | 000000000 | 0000 |
2-56 | 3/16" | 1/8" | 1/4" | 1/4" | 1 | 000000000 | 0000 |
3-48 | 1/4" | 1/8" | 5/16" | 1/4" | 1 | 000000000 | 0000 |
4-40 | 5/16" | 9/64" | 3/8" | 1/4" | 25 | 000000000 | 00000 |
5-40 | 11/32" | 5/32" | 3/8" | 9/32" | 1 | 000000000 | 0000 |
6-32 | 5/16" | 9/64" | 3/8" | 1/4" | 25 | 000000000 | 00000 |
8-32 | 3/8" | 3/16" | 7/16" | 5/16" | 25 | 000000000 | 00000 |
10-24 | 7/16" | 13/64" | 1/2" | 21/64" | 10 | 000000000 | 0000 |
10-32 | 7/16" | 13/64" | 1/2" | 21/64" | 10 | 000000000 | 0000 |
12-24 | 1/2" | 13/64" | 9/16" | 11/32" | 10 | 000000000 | 0000 |
1/4"-20 | 9/16" | 7/32" | 5/8" | 3/8" | 10 | 000000000 | 00000 |
1/4"-28 | 15/32" | 7/32" | 9/16" | 3/8" | 1 | 000000000 | 0000 |
5/16"-18 | 39/64" | 15/64" | 11/16" | 13/32" | 10 | 000000000 | 00000 |
3/8"-16 | 5/8" | 1/4" | 3/4" | 15/32" | 1 | 000000000 | 0000 |
Zinc-Plated Brass | |||||||
8-32 | 3/8" | 5/32" | 7/16" | 9/32" | 1 | 000000000 | 00000 |
10-24 | 13/32" | 3/16" | 1/2" | 11/32" | 1 | 000000000 | 00000 |
10-32 | 13/32" | 3/16" | 1/2" | 11/32" | 1 | 000000000 | 00000 |
1/4"-20 | 15/32" | 7/32" | 9/16" | 3/8" | 1 | 000000000 | 00000 |
5/16"-18 | 17/32" | 7/32" | 5/8" | 13/32" | 1 | 000000000 | 00000 |
3/8"-16 | 5/8" | 1/4" | 3/4" | 15/32" | 1 | 000000000 | 00000 |
Metric Brass Flanged Knurled-Head Thumb Nuts

Made from zinc-plated brass, these thumb nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. The flange distributes the load over a large area and reduces stress where the nut meets the material surface. A knurled head provides a slip-resistant grip for controlled adjustment.
For technical drawings and 3-D models, click on a part number.
Flanged Wing Nuts


A flange distributes the load over a large area and reduces stress where the nut meets the material surface. The wings provide more leverage for greater torque while tightening than knurled-head thumb nuts. Made from zinc alloy, all resist corrosion in wet environments. Those with a black zinc finish have a dark surface color and offer additional corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Flange | |||||||
---|---|---|---|---|---|---|---|
Thread Size | Wd. | Ht. | Dia. | Thick. | Pkg. Qty. | Pkg. | |
Zinc Alloy | |||||||
6-32 | 3/4" | 23/64" | 1/2" | 0.04" | 10 | 000000000 | 00000 |
8-32 | 3/4" | 23/64" | 1/2" | 0.04" | 10 | 000000000 | 0000 |
8-32 | 7/8" | 7/16" | 5/8" | 0.03" | 25 | 000000000 | 00000 |
10-24 | 7/8" | 7/16" | 5/8" | 0.03" | 25 | 000000000 | 00000 |
10-32 | 3/4" | 25/64" | 1/2" | 0.04" | 10 | 000000000 | 0000 |
10-32 | 7/8" | 7/16" | 5/8" | 0.03" | 25 | 000000000 | 00000 |
1/4"-20 | 1" | 1/2" | 3/4" | 0.04" | 25 | 000000000 | 00000 |
1/4"-20 | 1 1/8" | 37/64" | 7/8" | 0.04" | 25 | 000000000 | 00000 |
5/16"-18 | 1" | 1/2" | 3/4" | 0.04" | 10 | 000000000 | 0000 |
5/16"-18 | 1 1/8" | 37/64" | 7/8" | 0.04" | 25 | 000000000 | 00000 |
3/8"-16 | 1 1/8" | 37/64" | 7/8" | 0.04" | 25 | 000000000 | 00000 |
Black Zinc Alloy | |||||||
6-32 | 3/4" | 23/64" | 1/2" | 0.04" | 10 | 000000000 | 00000 |
8-32 | 3/4" | 23/64" | 1/2" | 0.04" | 10 | 000000000 | 00000 |
10-24 | 7/8" | 29/64" | 5/8" | 0.05" | 10 | 000000000 | 00000 |
10-32 | 3/4" | 23/64" | 1/2" | 0.04" | 10 | 000000000 | 00000 |
10-32 | 7/8" | 29/64" | 5/8" | 0.05" | 10 | 000000000 | 00000 |
1/4"-20 | 1" | 1/2" | 3/4" | 0.04" | 5 | 000000000 | 0000 |
1/4"-20 | 1 1/4" | 37/64" | 7/8" | 0.06" | 5 | 000000000 | 00000 |
5/16"-18 | 1" | 1/2" | 3/4" | 0.04" | 5 | 000000000 | 00000 |
5/16"-18 | 1 1/4" | 37/64" | 7/8" | 0.06" | 5 | 000000000 | 00000 |
3/8"-16 | 1 1/4" | 37/64" | 7/8" | 0.06" | 5 | 000000000 | 00000 |
Hex-Head Thumb Nuts

Tighten these thumb nuts with a wrench for more torque while fastening. They have a flange that distributes the load over a large area and reduces stress where the nut meets the material surface. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Flanged Push-Button Slide-Adjust Nuts

These nuts have a flange that distributes the load over a large area and reduces stress where the nut meets the material surface. Push the button to disengage the threads for quick adjustments on threaded rods. They can be tightened with a wrench once positioned by hand. A black-oxide finish provides corrosion resistance in dry environments.
For technical drawings and 3-D models, click on a part number.