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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Thread Spacing Thread Spacing |
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Material Material |
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Tip Type Tip Type |
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![]() | Ball |
Thread Fit Thread Fit |
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Thumb Screw Head Shape Thumb Screw Head Shape |
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![]() | Round |
Hardness Hardness |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Round-Head Thumb Screw Profile Round-Head ThumbScrew Profile |
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![]() | Narrow |
Drive Size Drive Size |
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Drive Style Drive Style |
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Thread Type Thread Type |
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Thread Direction Thread Direction |
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Head Material Head Material |
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Threading Threading |
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![]() | Fully Threaded |
Head Color Head Color |
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![]() | Black |
About Set Screws
More
About Thumb Screw and Binding Post Materials
More
Ultra-Fine-Thread Ball-Point Set Screws

Fine threads give you precise control. Made from 303 stainless steel, these set screws have good corrosion resistance. To install screws in unthreaded holes, use an optional threaded insert (sold separately). Length listed is the overall length.
For technical drawings and 3-D models, click on a part number.
Tip | ||||||
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Lg. | Dia. | Material | Drive Size | Hardness | Each | |
1/4"-80 | ||||||
3/8" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
1/2" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 0000 |
3/4" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 0000 |
1" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
1 1/4" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
1 1/2" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
1 3/4" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
2" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
2 1/4" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
2 1/2" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
2 3/4" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
3" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
3 1/4" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
3 1/2" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
3 3/4" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
4" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
Ultra-Fine-Thread Plastic-Head Thumb Screws
Fine threads give you precise control. They have a ball bearing tip that adjusts to angled surfaces and minimizes damage from surface contact. They have a lightweight and nonconductive plastic head and chemical-resistant 18-8 stainless steel threads. The head is knurled for slip-resistant controlled adjustment. Length is measured from under the head.
Optional threaded inserts can be used to install these thumb screws into existing holes.
For technical drawings and 3-D models, click on a part number.

Head | ||||||||
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Lg. | Tip Dia. | Dia. | Ht. | Max. Temperature, °F | Color | Tensile Strength, psi | Each | |
18-8 Stainless Steel | ||||||||
1/4"-80 | ||||||||
3/4" | 3/16" | 1/2" | 3/4" | 180° | Black | 60,000 | 000000000 | 000000 |
1" | 3/16" | 1/2" | 3/4" | 180° | Black | 60,000 | 000000000 | 0000 |
1 1/4" | 3/16" | 1/2" | 3/4" | 180° | Black | 60,000 | 000000000 | 0000 |
1 1/2" | 3/16" | 1/2" | 3/4" | 180° | Black | 60,000 | 000000000 | 0000 |
2" | 3/16" | 1/2" | 3/4" | 180° | Black | 60,000 | 000000000 | 00000 |
3" | 3/16" | 1/2" | 3/4" | 180° | Black | 60,000 | 000000000 | 00000 |
3 1/2" | 3/16" | 1/2" | 3/4" | 180° | Black | 60,000 | 000000000 | 00000 |