System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Size Thread Size | Hide |
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Hex Nut Profile Hex Nut Profile |
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| Thin | Extra-Wide Thin |
Nut Type Nut Type |
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 | Hex |
Material Material |
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Thread Direction Thread Direction |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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Thread Spacing Thread Spacing |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Drive Style Drive Style |
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Finish Finish |
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Travel Distance per Turn Travel Distance per Turn |
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Hardness Hardness |
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Tensile Strength Tensile Strength |
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Specifications Met Specifications Met |
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About Nuts, Materials, and Finishes
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Selecting Compatible Lead Screws and Nuts
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Low-Strength Steel Thin Hex Nuts
Also known as jam nuts, these are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place. About half the strength of medium-strength steel thin nuts, use them for light duty fastening applications, such as securing access panels. Some of these screws meet ISO and DIN dimensional standards.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
|---|---|---|---|---|---|---|
| Size | Spacing | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Steel—Grade 2 | ||||||
| 2 1/2"-4 | Coarse | 3 3/4" | 1 13/32" | 1 | 000000000 | 000000 |
Low-Strength Steel Extra-Wide Thin Hex Nuts
Also known as heavy jam nuts, these are about half the height and 10% wider than standard hex nuts. Use them in low-clearance applications or jam against another extra-wide hex nut to hold it in place. Made from low-strength steel, use them in light duty fastening applications, such as securing access panels.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Steel—Grade 2 | |||||
|---|---|---|---|---|---|
| 2 1/2"-4 | 3 7/8" | 1 29/64" | 1 | 000000000 | 000000 |
Acme Lead Screws and Nuts
Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. To ensure compatibility, please select components that have the same thread direction and size.
Carbon steel components are easier to machine than alloy steel components. Zinc-plated carbon steel components have mild corrosion resistance. 360 brass components have excellent machinability and good corrosion resistance. 18-8 stainless steel components have good corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
Hex nuts fasten and position lead screw components.
| Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
Carbon Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2 1/2"-4 | 2 1/2" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 0000000 |
Zinc-Plated Carbon Steel | ||||||||||
| 2 1/2"-4 | 2 1/2" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | __ | 000000000 | 000000 |
360 Brass | ||||||||||
| 2 1/2"-4 | 2 1/2" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 000000 |
18-8 Stainless Steel | ||||||||||
| 2 1/2"-4 | 2 1/2" | 3 1/2" | 1 | 1:1 | 0.25" | Class 2G | Rockwell B97 | __ | 000000000 | 000000 |