What is a 4-40 screw in metric?
M3x
Fastener Conversion Chart
| Inch Equivalent | Metric Size-PitchISO and IFI Rec. | |
|---|---|---|
| 3- 48 | 3- 56 | M2.5x 0.45 |
| 4- 40 | 4- 48 | M3x .5 |
| 6- 32 | 6- 40 | M3.5x .6 |
| 8- 32 | 8- 36 | M4x .7 |
What does a #4-40 screw mean?
40 threads per inch
4-40: 0.1120 or 14/125 in diameter; 40 threads per inch. 5-40: 0.1250 or 1/8 in diameter; 40 threads per inch. 6-32: 0.1380 or 69/500 in diameter; 32 threads per inch. 8-32: 0.1640 or 41/250 in diameter; 32 threads per inch. 10-32: 0.1900 or 19/100 in diameter; 32 threads per inch.
What size is a 4 40 nut?
| Product details | |
|---|---|
| Diameter: | #4 |
| Thread count: | 40 |
| Diameter in inches: | 0.112″ |
| Width across the flats: | 1/4″ |
Is 4 40 UNC or UNF?
So M3. 5 x 0.6 has a 3.5mm diameter and a pitch of 0.6mm.
| Metric | UNC | UNF |
|---|---|---|
| M3 x 0.5 | 4-40 | 4-48 |
| M3.5 x 0.6 | 6-32 | 6-40 |
| M4 x 0.7 | 8-32 | 8-36 |
| M5 x 0.8 | 10-24 | 10-32 |
How big is a #4 screw?
American Screw Sizes
| THREAD DIAMETER | ||
|---|---|---|
| Size | Nearest Fraction | Inch |
| #4 | 7/64 | 0.11 |
| #5 | 1/8 | 0.12 |
| #6 | 9/64 | 0.13 |
What does an M3 screw look like?
The M3 is a metric screw specifying a nominal diameter of 3 millimetres (0.12 in); and standard coarse thread pitch defined as 0.5 millimetres (0.020 in). The M3 is the second most common screw found in PCs. It commonly appears in many lengths from 1 to 20 mm.