DIN Handbook 55

This 5th edition of DIN Handbook 55 contains 42 standards dealing with technical delivery conditions for bolts, screws, nuts and washers. The standards cover mechanical and functional properties and their testing, as well as tolerances, acceptance testing, inspection documentation and quality assurance.
Compared to the 4th edition of DIN Handbook 55
Two standards are new: DIN 34804 “Fasteners – Change of appearance of black surfaces” and DIN EN ISO 898-2 “Mechanical properties of fasteners made of carbon steel and alloy steel – Part 2: Nuts with specified property classes – Coarse thread and fine pitch thread”
Five standards have been revised for this edition.
DIN Handbook 55 is one of a series of six handbooks on fasteners. DIN Handbook 45 “Threads for engineering” complements this series.