DIN Standards for Fasteners

In Europe and other countries worldwide, DIN fastener standards are used — a list of specifications for fastener components manufactured to DIN standards. The abbreviation stands for the German Institute for Standardization, which sets requirements for products and manufacturing processes. This section presents a list of regulatory documentation for various types of fasteners under DIN standards, available as text, PDF and doc files.

Bolts, design and dimensions (23)

Screws, design and dimensions (37)

Nuts, design and dimensions (34)

Rivets, design and dimensions (6)

Retaining rings, design and dimensions (5)

Fasteners, packaging, marking (0)

Threads, types, dimensions, profile (0)

Self-tapping screws, design and dimensions (11)

Rigging, design and dimensions (13)

Clamps, design and dimensions (0)

Washers, design and dimensions (31)

Threaded studs, design and dimensions (8)

Cotter pins, design and dimensions (1)

Keys, design and dimensions (3)

Pins, design and dimensions (18)

Features of DIN standards

In DIN marking, fastener components are designated using numeric codes. They simplify standardization in manufacturing and allow screws, bolts, cotter pins and other products to be identified. Regulatory documentation is developed for each type of fastener and sets requirements for technical parameters, including:

• fastener material;
• thread type and characteristics;
• head configuration;
• shank diameter (hole diameter in a washer or nut);
• permissible loads, strength indicators and tightening torque;
• presence and type of corrosion-resistant coating.

Unlike the metric system used in GOST, geometric dimensions of DIN fasteners are expressed in inches. Russian standards also describe the chemical composition of the source alloy used for manufacturing fasteners in greater detail.

If the European fasteners required by a project specification are unavailable, Russian equivalents can be used. However, besides converting dimensions from inches to the metric system, other difficulties arise.

Equivalence tables between Russian and international standards significantly simplify fastener selection. They are precise conversion catalogues indicating fastener designations under GOST, DIN and ISO. In addition, the tables include diagrams or simplified drawings of each type of fastener.