Plain Thumb Screws
Our Plain Thumb Screws come in all common threads with a variety of thread lengths. The high-quality knurl allows for an easy grip to tighten these screws into place by hand, but also provides a decorative and unique appearance.
Thumb Screws are male threaded and are typically used as a non permanent fastener for applications that require quick and easy access. The plain thumb screw provides a fastening solution that can still be installed or removed by hand due to its knurled, non-slip head. A plain thumb screw is a good solution for securing access panels on devices that need frequent cleaning or maintenance.
Types of Plain Thumb Screws
Lyn-Tron offers plain thumb screws in several materials and in multiple lengths, diameters, and thread sizes for a good fitting for a wide range of applications.
We provide plain thumb screws in:
- Brass thumbscrews
- Stainless steel thumbscrews
- Steel thumbscrews
Contact Us About Thumb Screws or Lyn-Tron's Custom Services
Lyn-Tron has been manufacturing electronic components and hardware item supplies for various sorts of equipment and products for over 50 years! All Lyn-Tron electronic hardware is made in the USA and held to the highest quality standards.
Contact us today if you have any questions about selecting plain thumb screws for your project or products, our services, or any specs, or would like to request custom parts or OEM-designed hardware manufactured to your print.
#4-40 Plain Thumb Screws
5/16"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7620 | Steel | 5/16" | 3/16" | #4-40 | 5/16" |
|
3/8"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7621 | Steel | 5/16" | 3/16" | #4-40 | 3/8" |
|
7/16"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7622 | Steel | 5/16" | 3/16" | #4-40 | 7/16" |
|
1/2"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7623 | Steel | 5/16" | 3/16" | #4-40 | 1/2" |
|
#6-32 Plain Thumb Screws
5/16"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7624 | Steel | 5/16" | 3/16" | #6-32 | 5/16" |
|
3/8"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7625 | Steel | 5/16" | 3/16" | #6-32 | 3/8" |
|
7/16"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7626 | Steel | 5/16" | 3/16" | #6-32 | 7/16" |
|
1/2"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7627 | Steel | 5/16" | 3/16" | #6-32 | 1/2" |
|
#8-32 Plain Thumb Screws
3/8"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7628 | Steel | 3/8" | 3/16" | #8-32 | 3/8" |
|
7/16"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7629 | Steel | 3/8" | 3/16" | #8-32 | 7/16" |
|
1/2"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7630 | Steel | 3/8" | 3/16" | #8-32 | 1/2" |
|
9/16"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7631 | Steel | 3/8" | 3/16" | #8-32 | 9/16" |
|
5/8"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7632 | Steel | 3/8" | 3/16" | #8-32 | 5/8" |
|
#10-32 Plain Thumb Screws
3/8"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7633 | Steel | 7/16" | 3/16" | #10-32 | 3/8" |
|
7/16"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7634 | Steel | 7/16" | 3/16" | #10-32 | 7/16" |
|
1/2"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7635 | Steel | 7/16" | 3/16" | #10-32 | 1/2" |
|
9/16"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7636 | Steel | 7/16" | 3/16" | #10-32 | 9/16" |
|
5/8"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7637 | Steel | 7/16" | 3/16" | #10-32 | 5/8" |
|
#1/4-20 Plain Thumb Screws
1/2"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7638 | Steel | 1/2" | 1/4" | #1/4-20 | 1/2" |
|
9/16"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7639 | Steel | 1/2" | 1/4" | #1/4-20 | 9/16" |
|
5/8"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7640 | Steel | 1/2" | 1/4" | #1/4-20 | 5/8" |
|
11/16"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7641 | Steel | 1/2" | 1/4" | #1/4-20 | 11/16" |
|
3/4"
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST7642 | Steel | 1/2" | 1/4" | #1/4-20 | 3/4" |
|
M3.0x0.5 Plain Thumb Screws
8mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5465 | Steel | 8mm | 5mm | M3.0x0.5 | 8mm |
|
9mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5466 | Steel | 8mm | 5mm | M3.0x0.5 | 9mm |
|
11mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5467 | Steel | 8mm | 5mm | M3.0x0.5 | 11mm |
|
13mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5468 | Steel | 8mm | 5mm | M3.0x0.5 | 13mm |
|
M3.5x0.6 Plain Thumb Screws
8mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5469 | Steel | 8mm | 5mm | M3.5x0.6 | 8mm |
|
9mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5470 | Steel | 8mm | 5mm | M3.5x0.6 | 9mm |
|
11mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5471 | Steel | 8mm | 5mm | M3.5x0.6 | 11mm |
|
13mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5472 | Steel | 8mm | 5mm | M3.5x0.6 | 13mm |
|
M4.0x0.7 Plain Thumb Screws
9mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5473 | Steel | 10mm | 5mm | M4.0x0.7 | 9mm |
|
11mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5474 | Steel | 10mm | 5mm | M4.0x0.7 | 11mm |
|
13mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5475 | Steel | 10mm | 5mm | M4.0x0.7 | 13mm |
|
14.0mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5476 | Steel | 10mm | 5mm | M4.0x0.7 | 14.0mm |
|
16mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5477 | Steel | 10mm | 5mm | M4.0x0.7 | 16mm |
|
M5.0x0.8 Plain Thumb Screws
9mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5478 | Steel | 11mm | 5mm | M5.0x0.8 | 9mm |
|
11mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5479 | Steel | 11mm | 5mm | M5.0x0.8 | 11mm |
|
13mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5480 | Steel | 11mm | 5mm | M5.0x0.8 | 13mm |
|
14.0mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5481 | Steel | 11mm | 5mm | M5.0x0.8 | 14.0mm |
|
16mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5482 | Steel | 11mm | 5mm | M5.0x0.8 | 16mm |
|
M6.0x1.0 Plain Thumb Screws
13mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5483 | Steel | 13mm | 6mm | M6.0x1.0 | 13mm |
|
14.0mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5484 | Steel | 13mm | 6mm | M6.0x1.0 | 14.0mm |
|
16mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5485 | Steel | 13mm | 6mm | M6.0x1.0 | 16mm |
|
18.0mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5486 | Steel | 13mm | 6mm | M6.0x1.0 | 18.0mm |
|
19mm
| Part Number | Material | Head Diameter | Head Length | Male Thread | Thread Length | Details |
|---|---|---|---|---|---|---|
| ST5487 | Steel | 13mm | 6mm | M6.0x1.0 | 19mm |
|