#6 Screw Size and Thread Specifications
#6 is a small numbered (wire gauge) screw size. The most common thread is #6-32 (32 TPI), used in electronics, small assemblies, and general hardware. Diameter is approximately 0.138 in (3.5 mm).
Specifications
| Specification | Value |
|---|---|
| Designation | #6-32 (common) |
| Diameter | 0.138 in (3.5 mm) |
| Threads per inch (TPI) | 32 |
| Tap drill size | #36 |
| Closest metric equivalent | M3.5 |
Head types
| Screw size | Common head types |
|---|---|
| #6 | Pan head, flat head, round head (Phillips, slot, hex) |
Common uses
#6 screws are used in electronics, small machinery, computers, and light hardware. #6-32 is a standard thread for many small machine screws and sheet metal screws.
Related tools
Related charts
FAQ
What is #6 screw size?
#6 is a numbered (wire gauge) screw size. #6-32 means a #6 diameter with 32 threads per inch. Diameter is approximately 0.138 in (3.5 mm).
What drill size for #6-32 tap?
Use a #36 drill for #6-32 tapping.
What metric screw is closest to #6?
M3.5 or M4 is the closest metric equivalent to #6 in diameter. See M4 bolt size for metric specs.