Key Differences & Similarities
Diameter: M5 is slightly larger than 10-32
Thread Pitch: 10-32 has 32 threads per inch (0.794mm pitch), while M5-0.8 has a 0.8mm pitch. They are very close—nearly identical—but not identical.
Interchangeability: A 10-32 screw will often fit loosely into an M5 hole...