I have to thank every expert for giving advises.
I will probably measure the hardness of that rivet to find out the material and temper.
Most likely to be 2024-T4 (ICE-BOX).
I hope the wrath of god for the aerospace industry that use other standard than usual!! and worse than that for design...
Dear Experts
I took a lot of hardship!! and prepare a photo by solidworks.
If thinking it was familiar i will be thankful to give me information about the rivet and it's material.https://files.engineering.com/getfile.aspx?folder=35165401-f37e-421c-a3c3-475c6b5dfff2&file=UnKnown-Rivet.PNG
Dear friends
I have seen that rivet on critical attachment point in bk-117 helicopter.
Like attaching tail gearbox to spar or first rivets that attach longerons to skin.
This rivet belongs to group of rivets like DIN LN9198. but there is not any information about head signs.
Taking photo is...
Hello everybody!
I am new in helicopter maintenance.
I have seen a new kind of rivets with two dash on head (like ice-box rivets) and raised dot on center of rivet head.
Did any one know about this kind of rivets and the relevant material?
I will be thankful if i could have a catalogue of this...
