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About Thumb Screw and Binding Post Materials
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About Set Screws
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Metric Alloy Steel Ball-Point Set Screws
These set screws have a rolling ball that swivels 360° to minimize surface damage and allow for slight adjustments without loosening the screw. Length listed is the overall length.
| Lg., mm | Tip Dia., mm | Drive Size, mm | Hardness | Each | |
Alloy Steel | |||||
|---|---|---|---|---|---|
M3 × 0.5 mm | |||||
| 5 | 1.5 | 1.5 | Rockwell C39 | 000000000 | 00000 |
| 7.5 | 1.5 | 1.5 | Rockwell C39 | 000000000 | 0000 |
| 10 | 1.5 | 1.5 | Rockwell C39 | 000000000 | 0000 |
M4 × 0.7 mm | |||||
| 6 | 2.5 | 2 | Rockwell C39 | 000000000 | 0000 |
| 8 | 2.5 | 2 | Rockwell C39 | 000000000 | 0000 |
| 10 | 2.5 | 2 | Rockwell C39 | 000000000 | 0000 |
| 12 | 2.5 | 2 | Rockwell C39 | 000000000 | 0000 |
| 16 | 2.5 | 2 | Rockwell C39 | 000000000 | 0000 |
M5 × 0.8 mm | |||||
| 8 | 3 | 2.5 | Rockwell C39 | 000000000 | 0000 |
| 10 | 3 | 2.5 | Rockwell C39 | 000000000 | 0000 |
| 12 | 3 | 2.5 | Rockwell C39 | 000000000 | 0000 |
| 16 | 3 | 2.5 | Rockwell C39 | 000000000 | 0000 |
| 20 | 3 | 2.5 | Rockwell C39 | 000000000 | 0000 |
| 25 | 3 | 2.5 | Rockwell C39 | 000000000 | 0000 |
M6 × 1 mm | |||||
| 10.8 | 4 | 3 | Rockwell C39 | 000000000 | 0000 |
| 12.8 | 4 | 3 | Rockwell C39 | 000000000 | 0000 |
| 16.8 | 4 | 3 | Rockwell C39 | 000000000 | 0000 |
| 20.8 | 4 | 3 | Rockwell C39 | 000000000 | 0000 |
| 25.8 | 4 | 3 | Rockwell C39 | 000000000 | 0000 |
M8 × 1.25 mm | |||||
| 11.2 | 5.5 | 4 | Rockwell C39 | 000000000 | 0000 |
| 13.2 | 5.5 | 4 | Rockwell C39 | 000000000 | 0000 |
| 17.2 | 5.5 | 4 | Rockwell C39 | 000000000 | 0000 |
| 21.2 | 5.5 | 4 | Rockwell C39 | 000000000 | 0000 |
| 26.2 | 5.5 | 4 | Rockwell C39 | 000000000 | 0000 |
| 31.2 | 5.5 | 4 | Rockwell C39 | 000000000 | 0000 |
M10 × 1.5 mm | |||||
| 13.7 | 7 | 5 | Rockwell C39 | 000000000 | 0000 |
| 17.7 | 7 | 5 | Rockwell C39 | 000000000 | 0000 |
| 21.7 | 7 | 5 | Rockwell C39 | 000000000 | 0000 |
| 26.7 | 7 | 5 | Rockwell C39 | 000000000 | 0000 |
| 31.7 | 7 | 5 | Rockwell C39 | 000000000 | 0000 |
| 36.7 | 7 | 5 | Rockwell C39 | 000000000 | 0000 |
| 41.7 | 7 | 5 | Rockwell C39 | 000000000 | 0000 |
M12 × 1.75 mm | |||||
| 18 | 8.5 | 6 | Rockwell C39 | 000000000 | 0000 |
| 22 | 8.5 | 6 | Rockwell C39 | 000000000 | 0000 |
| 27 | 8.5 | 6 | Rockwell C39 | 000000000 | 0000 |
| 32 | 8.5 | 6 | Rockwell C39 | 000000000 | 0000 |
| 42 | 8.5 | 6 | Rockwell C39 | 000000000 | 0000 |
| 52 | 8.5 | 6 | Rockwell C39 | 000000000 | 0000 |
M16 × 2 mm | |||||
| 28.3 | 12 | 8 | Rockwell C39 | 000000000 | 00000 |
| 38.3 | 12 | 8 | Rockwell C39 | 000000000 | 00000 |
| 53.3 | 12 | 8 | Rockwell C39 | 000000000 | 00000 |
M20 × 2.5 mm | |||||
| 44.2 | 15 | 10 | Rockwell C39 | 000000000 | 00000 |
| 64.2 | 15 | 10 | Rockwell C39 | 000000000 | 00000 |
M24 × 3 mm | |||||
| 54.7 | 18 | 12 | Rockwell C39 | 000000000 | 00000 |
| 84.7 | 18 | 12 | Rockwell C39 | 000000000 | 00000 |
Alloy Steel Ball-Point Set Screws
A rolling ball swivels 360° to minimize surface damage and allow for slight adjustments without loosening the screw. Length listed is the overall length.
| Lg. | Tip Dia. | Drive Size | Hardness | Each | |
Black-Oxide Alloy Steel | |||||
|---|---|---|---|---|---|
1/4"-20  | |||||
| 1/2" | 0.157" | 1/8" | Rockwell C32 | 000000000 | 00000 |
| 3/4" | 0.157" | 1/8" | Rockwell C32 | 000000000 | 0000 |
5/16"-18 | |||||
| 3/4" | 0.216" | 5/32" | Rockwell C32 | 000000000 | 0000 |
| 1" | 0.216" | 5/32" | Rockwell C32 | 000000000 | 0000 |
3/8"-16 | |||||
| 3/4" | 0.275" | 3/16" | Rockwell C32 | 000000000 | 0000 |
| 1" | 0.275" | 3/16" | Rockwell C32 | 000000000 | 0000 |
1/2"-13 | |||||
| 1" | 0.334" | 1/4" | Rockwell C32 | 000000000 | 0000 |
| 1 1/2" | 0.334" | 1/4" | Rockwell C32 | 000000000 | 0000 |
5/8"-11 | |||||
| 1" | 0.472" | 5/16" | Rockwell C32 | 000000000 | 00000 |
| 1 1/2" | 0.472" | 5/16" | Rockwell C32 | 000000000 | 00000 |
Stainless Steel Ball-Point Set Screws
Made from 304 stainless steel, these set screws have good corrosion resistance and will hold up in wet environments. A rolling ball swivels 360° to minimize surface damage and allow for slight adjustments without loosening the screw. Length listed is the overall length.
| Lg. | Tip Dia. | Drive Size | Hardness | Each | |
304 Stainless Steel | |||||
|---|---|---|---|---|---|
1/4"-20 | |||||
| 1/2" | 0.157" | 1/8" | Rockwell C30 | 000000000 | 00000 |
| 3/4" | 0.157" | 1/8" | Rockwell C30 | 000000000 | 0000 |
5/16"-18 | |||||
| 3/4" | 0.216" | 5/32" | Rockwell C30 | 000000000 | 0000 |
| 1" | 0.216" | 5/32" | Rockwell C30 | 000000000 | 0000 |
3/8"-16 | |||||
| 3/4" | 0.275" | 3/16" | Rockwell C30 | 000000000 | 0000 |
| 1" | 0.275" | 3/16" | Rockwell C30 | 000000000 | 0000 |
1/2"-13 | |||||
| 1" | 0.334" | 1/4" | Rockwell C30 | 000000000 | 00000 |
| 1 1/2" | 0.334" | 1/4" | Rockwell C30 | 000000000 | 00000 |
5/8"-11 | |||||
| 1" | 0.472" | 5/16" | Rockwell C30 | 000000000 | 00000 |
| 1 1/2" | 0.472" | 5/16" | Rockwell C30 | 000000000 | 00000 |
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.
303 Stainless Steel Set Screws
Tip | ||||||
|---|---|---|---|---|---|---|
| Lg. | Dia. | Material | Drive Size | Hardness | Each | |
6-80 | ||||||
| 3/8" | 0.094" | Alloy Steel | 5/64" | Not Rated | 000000000 | 000000 |
| 7/16" | 0.094" | Alloy Steel | 5/64" | Not Rated | 000000000 | 00000 |
| 1/2" | 0.094" | Alloy Steel | 5/64" | Not Rated | 000000000 | 00000 |
| 37/64" | 0.094" | Alloy Steel | 5/64" | Not Rated | 000000000 | 00000 |
| 3/4" | 0.094" | Alloy Steel | 5/64" | Not Rated | 000000000 | 00000 |
| 7/8" | 0.094" | Alloy Steel | 5/64" | Not Rated | 000000000 | 00000 |
| 1" | 0.094" | Alloy Steel | 5/64" | Not Rated | 000000000 | 00000 |
| 1 1/8" | 0.094" | Alloy Steel | 5/64" | Not Rated | 000000000 | 00000 |
| 1 1/4" | 0.094" | Alloy Steel | 5/64" | Not Rated | 000000000 | 00000 |
| 1 1/2" | 0.094" | Alloy Steel | 5/64" | Not Rated | 000000000 | 00000 |
3/16"-100 | ||||||
| 3/8" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 0000 |
| 1/2" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 0000 |
| 3/4" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
| 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 |
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 | 00000 |
| 3/4" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
| 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 |
1/4"-100 | ||||||
| 3/8" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
| 1/2" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
| 3/4" | 0.156" | Alloy Steel | 3/32" | Not Rated | 000000000 | 00000 |
| 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 |
Metric 303 Stainless Steel Set Screws
Tip | ||||||
|---|---|---|---|---|---|---|
| Lg., mm | Dia., mm | Material | Drive Size, mm | Hardness | Each | |
M2.5 × 0.2 mm | ||||||
| 8 | 1.5 | Alloy Steel | 1.5 | Not Rated | 000000000 | 000000 |
| 10 | 1.5 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 12 | 1.5 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 15 | 1.5 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 20 | 1.5 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 25 | 1.5 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
M3 × 0.2 mm | ||||||
| 8 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 10 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 12 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 15 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 20 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 25 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 30 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 33 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 36 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 39 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
M3 × 0.25 mm | ||||||
| 8 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 10 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 12 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 15 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 20 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 25 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 30 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 33 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 36 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
| 39 | 1.6 | Alloy Steel | 1.5 | Not Rated | 000000000 | 00000 |
Brass Optional Threaded Inserts
Flange | ||||||
|---|---|---|---|---|---|---|
| Installed Lg. | Dia. | Thick. | For Max. Hole Dia. | Drill Bit Size | Each | |
6-80 | ||||||
| 0.25" | 1/4" | 0.03" | 7/32" | 7/32" | 000000000 | 00000 |
| 0.375" | 1/4" | 0.03" | 7/32" | 7/32" | 000000000 | 0000 |
3/16"-100 | ||||||
| 0.313" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 0000 |
| 0.438" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 0000 |
| 0.625" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 0000 |
| 0.75" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 0000 |
1/4"-80 | ||||||
| 0.313" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 0.438" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 0.625" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 0.75" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
1/4"-100 | ||||||
| 0.313" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 0.438" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 0.625" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 0.75" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
Metric Brass Optional Threaded Inserts
Flange | ||||||
|---|---|---|---|---|---|---|
| Installed Lg., mm | Dia., mm | Thick., mm | For Max. Hole Dia., mm | Drill Bit Size, mm | Each | |
M2.5 × 0.2 mm | ||||||
| 7 | 4.5 | 0.5 | 4 | 4 | 000000000 | 00000 |
M3 × 0.2 mm | ||||||
| 5 | 4.95 | 0.25 | 4.5 | 4.5 | 000000000 | 0000 |
| 7 | 4.95 | 0.25 | 4.5 | 4.5 | 000000000 | 0000 |
| 9 | 4.95 | 0.25 | 4.5 | 4.5 | 000000000 | 0000 |
M3 × 0.25 mm | ||||||
| 5 | 4.95 | 0.25 | 4.5 | 4.5 | 000000000 | 0000 |
| 7 | 4.95 | 0.25 | 4.5 | 4.5 | 000000000 | 0000 |
| 9 | 4.95 | 0.25 | 4.5 | 4.5 | 000000000 | 0000 |
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.
Thumb Screws
Thumb Screws
Head | ||||||||
|---|---|---|---|---|---|---|---|---|
| Lg. | Tip Dia. | Dia. | Ht. | Max. Temperature, °F | Color | Tensile Strength, psi | Each | |
18-8 Stainless Steel | ||||||||
3/16"-100 | ||||||||
| 3/4" | 1/8" | 3/8" | 7/16" | 180° | Black | 60,000 | 000000000 | 000000 |
| 1" | 1/8" | 3/8" | 7/16" | 180° | Black | 60,000 | 000000000 | 00000 |
| 1 1/4" | 1/8" | 3/8" | 7/16" | 180° | Black | 60,000 | 000000000 | 00000 |
| 1 1/2" | 1/8" | 3/8" | 7/16" | 180° | Black | 60,000 | 000000000 | 00000 |
| 1 3/4" | 1/8" | 3/8" | 7/16" | 180° | Black | 60,000 | 000000000 | 00000 |
1/4"-80 | ||||||||
| 3/4" | 3/16" | 1/2" | 3/4" | 180° | Black | 60,000 | 000000000 | 00000 |
| 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 |
Optional Threaded Inserts
Threaded Inserts
Flange | ||||||
|---|---|---|---|---|---|---|
| Installed Lg. | Dia. | Thick. | For Max. Hole Dia. | Drill Bit Size | Each | |
Brass | ||||||
3/16"-100 | ||||||
| 5/16" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 00000 |
| 7/16" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 0000 |
| 5/8" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 0000 |
| 3/4" | 0.29" | 0.01" | 1/4" | 1/4" | 000000000 | 0000 |
1/4"-80 | ||||||
| 5/16" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 7/16" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 5/8" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |
| 3/4" | 0.352" | 0.01" | 5/16" | 5/16" | 000000000 | 0000 |