The GB/T 12615-1990 standard, now obsolete, specified the Mushroom head break mandrel closed end blind rivets for a range of nominal diameters from 3mm to 6mm. It outlined the technical requirements for these fasteners, commonly used in sheet metal joining. Although the standard is no longer active, it was previously referenced for its guidelines on the mechanical properties and application data of closed-end blind rivets with a flat, rounded head. Its successor standards, such as GB/T 12615.1-2004, have since provided updated specifications.
The GB/T 12615-1990 Mushroom head break mandrel closed end blind rivets are easily installed in confined spaces. Simply insert the rivet into the hole, apply force with a rivet gun, which expands the mandrel to lock the rivet in place. The mandrel then breaks off, leaving a secure, flat-headed joint. Ensure proper hole size and material compatibility for optimal results.
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