| Group | Product description | Type | Standard | Dimension | Visualization | Technical terms |
| 801/2 | Rectangular quick-locking nut | PRR | SAE J 892 a | Inch |
|
Consult |
| 803 | Spped nut for screws | PRP | SAE J 891 a | mm/inch |
|
Consult |
| 804 | Spring nut for sheet metal (several types) | PMC | SPECIAL | mm |
|
Consult |
| 818 | Speede nut (several types) | PRC | SPECIAL | mm |
|
Consult |
Symbols used
K = The characteristic factor of the ring for calculating the load.
FN = Area of groove face
PN = Capacity of load on groove.
PR = Capacity of load when ring is g = 0.
PRg = Capacity of load when ring is g = table value.