M6 x 25 Button Head Screw ISO7380 A2-304 Stainless Steel

These A2-304 button head socket screws ISO 7380 are fully threaded. Tightening strength and torque is worth checking for critical applications to prevent movement of the material under certain stress conditions.

It is important to get the correct tensile strength for the application its being used for as either a higher tensile strength or lower tensile strength may be suitable.  These are usually stamped on the head of the socket head cap screw or bolt.  Having a higher tensile strength may not always be suitable on certain applications as movement and stretching of the materials being joined together or the breaking point could be important so always check suitability for specific applications.  Once the fastener has been disassembled it’s advisable to replace all components such as the fastener nuts and washers together with the socket cap screws or bolts.  The reason is that the fastener over time will experience stretching of the threads of when it was tightened up plus the likely constant movement may cause fractures causing weakness to the fastener.

These are A2-70 stainless steel fasteners which have preventative measure from corrosion. Ideall for use outdoors or in damp or wet conditions. Also bear in mind using different materials can cause fusing through corrosion especially in damp conditions when mixed with aluminium or othe metal materials.

More information is available from Central Fasteners regarding fastener details, but it's always worth checking with a manufacturer's specifications or drawings if an alternative size, tensile strength or types of fasteners are used.