DIN 7337 Fracture Mandrel Blind Rivets

The DIN 7337 standard published by the German Standardization Institute (DIN) defines the requirements for break mandrel blind rivets.

A blind rivet is a rivet that can be inserted from one side, unlike machine screws and nuts that require access to both sides of the material. The blind rivet consists of two pre-assembled parts: the rivet body and inside it the adjustment mandrel. At a predetermined point during installation, the exposed mandrel breaks within the rivet. Blind rivets are produced in different head forms such as dome, large flange and countersunk head, and in different material combinations that affect strength and corrosion resistance. For example, aluminum rivet and aluminum mandrel, aluminum rivet and steel mandrel, steel rivet and steel mandrel, stainless steel rivet and steel mandrel, or stainless steel rivet and stainless steel mandrel.

The International Organization for Standardization (ISO) has also published the following standards on the same subject :

• The ISO 14589 Blind rivets - Mechanical test standard describes mechanical testing methods for blind rivets, including shear test, tensile test, mandrel head holding ability test, mandrel thrust resistance test (before setting), and mandrel breaking load test. These tests are valid for blind rivets up to a nominal diameter of 6,4 mm.
• ISO 15977 Open end blind rivets with draw chuck and protruding head - to AIA/St standard, with aluminum alloy body and steel chuck and nominal diameters from 2,4 mm to 6,4 mm, with draw chuck and protruding head open end blind rivets Dimensional and mechanical properties for rivets are described.
• ISO 15978 Open end blind rivets with draw chuck and countersunk head - for AIA/St standard, open end blind rivets with aluminum alloy body and steel mandrel nominal diameters from 2,4 mm to 5 mm, with break draw mandrel and countersunk head Dimensional and mechanical properties are described.
• ISO 15979 Open end blind rivets with draw chuck and protruding head - St/St standard, with steel body and steel mandrel and nominal diameters from 2,4 mm to 6,4 mm, with draw mandrel and protruding head open end blind rivets Its dimensional and mechanical properties are described.
• ISO 15980 Open end blind rivets with draw chuck and countersunk head - to St/St standard, with steel body and steel mandrel and nominal diameters from 2,4 mm to 6,4 mm, open end blind rivets with draw chuck and countersunk head Its dimensional and mechanical properties are described.
• ISO 15981 Open-end blind rivets with draw chuck and protruding head - Dimensional and mechanical specifications for open-end blind rivets with aluminum alloy body and aluminum alloy chuck and nominal diameters from 2,4 mm to 6,4 mm in AIA/AIA standard is explained.
• ISO 15982 Open end blind rivets with draw chuck and countersunk head - in AIA/AIA standard, with aluminum alloy body and aluminum alloy chuck and nominal diameters from 2,4 mm to 6,4 mm, with break draw chuck and countersunk head open Dimensional and mechanical properties for end blind rivets are described.
• ISO 15983 Open-end blind rivets with pull chuck and protruding head - to A2/A2 standard, with austenitic stainless steel body and austenitic stainless steel mandrel and nominal diameters from 3 mm to 5 mm, open-end blind with break pull chuck and protruding head Dimensional and mechanical properties for rivets are described.
• ISO 15984 Open-end blind rivets with draw chuck and countersunk head - to A2/A2 standard, with austenitic stainless steel body and austenitic stainless steel mandrel and nominal diameters from 3 mm to 5 mm, with break drawing mandrel and countersunk head, open-end blind Dimensional and mechanical properties for rivets are described.
• ISO 16582 Open-end blind rivets with pull mandrel and protruding head - in Cu/St or Cu/Br or Cu/SSt standard, with copper body and steel or bronze or stainless steel mandrels and nominal diameters from 3 mm to 4,8 mm Dimensional and mechanical properties are described for open-end blind rivets with snap-drawn chuck and protruding head.
• ISO 16583 Open-end blind rivets with draw chuck and countersunk head - in Cu/St or Cu/Br or Cu/SSt standard, The dimensional and mechanical properties are described for open-end blind rivets with a copper body and a steel or bronze or stainless steel mandrel and a counter-drawn chuck and countersunk head, nominal diameters from 3 mm to 4,8 mm.
• ISO 16584 Open-end blind rivets with pull mandrel and protruding head - in NiCu/St or NiCu/SSt standard, The dimensional and mechanical properties are described for open-end blind rivets with break pull chuck, protruding head, nickel copper body and steel or stainless steel mandrel and nominal diameters from 3,2 mm to 6,4 mm.

Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides testing services for breaking mandrel blind rivets, within the scope of DIN 7337 standard, with its trained and expert staff and advanced technological equipment.