Standoff spacers in the world of electronic components and electronic hardware, standoffs are typically used to space circuit boards, panels, doors or gears.
Size:
Male-Female spacer:M2/2.5/3/4 * L (spacer length) + 5/6mm (outside thread length)
Female-Female spacer:M2/2.5/3/4 * L(spacer length)
Metric thread diameter:
M2 (2mm) / M2.5 (2.5mm) / M3 (3mm) / M4 (4mm)
Metric thread pitch:
0.4mm(M2) / 0.45mm(M2.5) / 0.5mm(M3) / 0.7mm(M4)
Outside thread length:
5mm(M2.5)
6mm(M2 / M3 / M4)
Spacer wide:
4mm(M2)
4.7mm(M2.5)
5.6mm(M3)
7mm(M4)