Metric
| No. of standards for threads |
Symbols of threads |
No. of standards for taps |
| ISO 68-1 |
coarse pitch series
|
DIN 352 hand |
| DIN 352 short machine | ||
| DIN 371 machine with reinforced shank |
||
| DIN 376 machine with reduced diameter shank | ||
| DIN 357 nut for automatic machine | ||
| DIN 371 (cold forming) | ||
| ISO 529 (cold forming) | ||
|
fine pitch series
|
DIN 2181 hand |
|
| DIN 2181 short machine | ||
| DIN 371 machine with reinforced shank |
||
| DIN 374 machine with reduced diameter shank | ||
|
DIN 103, ISO 2901 |
trapezoidal coarse
|
Standard DABEX (for steel Rm 700) |
| Standard DABEX (for steel Rm 1000) |
||
| Standard DABEX (for cast iron, Ms) | ||
|
DIN 103, ISO 2901 |
Trapezoidal fine
|
Standard DABEX (for steel Rm 700) |
| Standard DABEX (for steel Rm 1000) | ||
| Standard DABEX (for cast iron, Ms) | ||
|
DIN 103, ISO 2901 |
Trapezoidal extra-coarse
|
Standard DABEX (for steel Rm 700) |
| Standard DABEX (for steel Rm 1000) |
||
| Standard DABEX (for cast iron, Ms) | ||
| DIN 380 |
Trapezoidal STUB
|
Standard DABEX (for steel Rm 700) |
| Standard DABEX (for steel Rm 1000) |
||
| Standard DABEX (for cast iron, Ms) | ||
| DIN 263 |
Trapezoidal ACME for rail vehicles
|
Standard DABEX (for steel Rm 700) |
| Standard DABEX (for steel Rm 1000) |
||
| Standard DABEX (for cast iron, Ms) | ||
| DIN 513 |
Buttress
|
Standard DABEX (for steel Rm 700) |
| Standard DABEX (for steel Rm 1000) |
||
| Standard DABEX (for cast iron, Ms) | ||
|
DIN ISO 5855 ASME B1.21M
|
Aerospace
|
DIN 352 hand |
| DIN 352 short machine |
||
| DIN 371 machine with reinforced shank |
||
| DIN 376 machine with reduced diameter shank | ||
| DIN 8140 |
Coarse pitch series for thread screw inserts (Heli Coil)
|
DIN 352 hand |
| DIN 352 short machine |
||
| DIN 2184-1 machine with reduced diameter shank | ||
| DIN 8140 |
Fine pitch series for thread screw inserts (Heli Coil)
|
DIN 2184-2 hand |
| DIN 2184-2 short machine |
||
| DIN 2184-1 machine with reduced diameter shank | ||
| DIN 158 |
Internal metric parallel
|
DIN 2184-2 hand |
| DIN 2184-2 short machine |
||
| DIN 2184-1 machine with reduced diameter shank |
