DIN 3853 is Non-soldering and soldering compression fittings - Stud ends for use with union nut;
Thread Form per DIN 3853, ISO 261 is general purpose metric screw threads — General plan.
This International Standard specifies ISO general purpose metric screw threads (M) having basic profile according to ISO 68-1. Basic dimensions are given in ISO 724. For tolerances see ISO 965-1.
The related standards as follows:
ISO 68-1:1998, ISO general purpose screw threads — Basic profile — Part 1: Metric screw threads.
ISO 262:1998, ISO general purpose metric screw threads — Selected sizes for screws, bolts and nuts.
ISO 724:1993, ISO general purpose metric screw threads — Basic dimensions.
ISO 965-1:1998, ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data.
ISO 5408:1983, Cylindrical screw threads — Vocabulary.
