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What is Stainless steel DIN603 Carriage bolt

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Metric DIN 603 / ISO 8678 Mushroom Head Square Neck Carriage Bolts

Metric DIN 603 mushroom head square neck carriage bolts have a smooth domed head that prevents them from being tightened or loosened from above. The square shoulder below the head is designed to self-anchor into wood and resists turning when the nut is tightened on the treaded shaft. Aspen Fasteners offers the following sizes for immediate delivery from stock stainless steel carriage bolt: Diameters ranging from M5 to M20 and lengths up to 150mm. 


DIN (Deutsches Institut für Normung - German Institute for Standardization) standards are issued for a variety of components including industrial fasteners as Metric DIN 603 mushroom head square neck carriage bolts. The DIN standards remain common in Germany, Europe and globally even though the transition to ISO standards is taking place. DIN standards continue to be used for parts which do not have ISO equivalents or for which there is no need for standardization.  The ISO equivalent for DIN 603 mushroom head square neck carriage bolts is ISO 8678.

DIN 603 carriage bolt

Mechanical properties of stainless steel for metric DIN 603 mushroom head square neck carriage bolts

Stainless steels can be divided into three groups of steel - austenitic, ferritic and martensitic. Austenitic steel is by

far the most common type (>90% of commercial fasteners). The steel groups and strength classes are designated by a four-digit sequence of letters and numbers (eg A2-70) as shown in the following table. DIN EN ISO 3506 governs screws and nuts made from stainless steel.

 

Steel group

Steel grade

Strength class

Tensile strength N/mm2

Tensile strength PSI

Dia range

Nut Load
 N/mm2

Austenitic

A2 and A4

50

500

7000

<=M39

500

70

700

100000

<=M20

700

80

800

118000

<=M20

800








Steel group

Property Strength class

Made From

Characteristics

Austenitic

50

A1,A2

Soft;cold worked,turned and soft pressed fasteners

70

A2,A4

cold worked,normal strength formed fasteners

80

A2,A4

Extreme cold worked,high strenght,special applications

 

Chemical composition of stainless steel mushroom head square neck carriage bolts

 Chemical composition of stainless steel metric DIN 603 mushroom head square neck carriage bolts

 

Dimensional data and technical information for carriage bolts was obtained from publicly available sources and not acquired through standards agencies. It has been completed and compiled for reference purposes only; where discrepancies are found they are subject to change without notice. Aspen Fasteners makes no warranties or representations regarding the accuracy and validity of the compiled information and data. Contact the relevant standards authorities for accurate and detailed information.


The tensile stress is calculated with reference to the tensile stress area (see DIN EN ISO 3506-1979).  Nuts to be paired

with same grade of stainless steel screws Chemical composition of stainless steel metric DIN 603 mushroom head square neck carriage bolts


Dimensional data and technical information for Metric DIN 603 mushroom head square neck carriage bolts was obtained from publicly available sources and not acquired through standards agencies. It has been completed and compiled for reference purposes only; where discrepancies are found they are subject to change without notice.

 


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