| ①,The connection with the associated cylindrical internal thread according to DIN 158 is self-sealing; when using the standard thread according to DIN 13 part 1 or the fine thread part 5, a sealant is required. The short version of the external thread - deviating from DIN 158 - has a smallest usable thread length of 4 mm.
②,Conical grease nipples with Whitworth pipe thread are no longer to be used for new designs. The distance to the reference plane is (1.5 ± 0.5) mm.
③,At the choice of the manufacturer.
④,For material with a tensile strength of more than 500 N / mm², the core hole must be made up to a maximum of 0.2 mm larger than specified.
GB /T 3763 - 2008
|24° cone connectors and flared couplings - Hexagon thin nut|
GB 3763 - 1983
|Bite Type Tube Fittings - Hexagon Thin Nuts|
GB /T 3759 - 2008
|24° Cone Connectors-Nut|
GB 3759 - 1983
|Bite type tube fittings--Nuts|
DIN 431 - 2013
|Pipe Nuts With Thread In Accordance With DIN ISO 228 Part 1|
DIN 3870 - 2001
|Non-Soldering and Soldering Compression Fittings - Union Nuts Series L1 ( Pipe Nuts )|
DIN 3871 - 1995
|Non-soldering and Soldering Compression Couplings - Socket Unions|