Yeah like novaflo said, you can try HLJ, as I know some retailers in HK have been known to import these fasteners and the actual SHE resin parts directly from Studio HalfEye, for their customers from time to time. Or you can try to scour for them in any good bolt & fasteners shop.
novaflo, I don't have any SHE kits yet, but I plan to get one if I encounter it at a right price. I can appreciate the art but the heart is weak at $400 or so for one.