Screw & Hole Thread Size

1-3/8 - 18 UNEF-2A
1/4-40 UNS-2A
1mm
2M20
2M25
2M32
2PG21
2PG29
3/4-20 UNEF-2A
4-40
4-40 UNC
M12
M12 x 1.5
M12 x M12
M12x1
M16 x 1.5
M19 x 1
M20
M20 x 1.5
M24 x 1.5
M25
M3
M30 x 1.5
M32
M36 x 1.5
M40
M8
M8 x M12
M8 x M8
None
PG16
PG21
PG29