Hi,
I bought this rusty Gjermundbu helmet at Hastings last week and after wire brushing and repainting the thing I'm wanting to add a 'Y' type chin strap to it so that my nose won't get squished if I get a blow to the nasal/spectacle.

Does anybody know where online I can get dome rivets made of carbon steel (i.e. steel that rusts) that can hand peened with a hammer without being robbed blind on shipping costs?

The rivets hold like the one depicted below with dimensions approximately d1=6-8mm, d=4-5mm and l= 15-20mm

---

 Attachment: 7.89 KB

Sapphire Products, Birmingham.
http://www.sapphireproducts.co.uk/

will do packs of 100, and incredibly helpful.

Alternatively, Macc Models, 3/16th x 3/4 inch rivets will be about right:

https://maccmodels.co.uk/other-fastners-rivets/rivets/iron-rivets/3-16-x-3-4-iron-rivets-pack-of-50.html