Recently I was looking for long straight pins. I found some long pins with loops on the end but they were more like jewellery findings and were bendable. I wanted the non bendy straight pins. When I did find exactly what I wanted I could only get them in small quantities (10-12).
I only wanted the pins, so I was happy when I found pins just like these at a local store.
Darice Floral Pearl Pins 3 long 6mm by SuperiorCraftSupply
These pins are about 4" long. I just crush the end off and glue my own beads on to decorate. They do not have a head or end loop but E6000 glue holds the beads on tight.
I only wanted to decorate straight pins for a pin cushion so I didn't need the clasps. I have also seen the little end clasps sold separately on places like etsy.