https://www.non-standardfasteners.com/product/flange-series/
Yuanyang Fasteners engages in broad scopes of high quality products in American, German, Japanese and Astralian standards. The catalogue includes Cement bolt series,T bolt series and some Non-standard fasteners.Products range from grade 2,grade 5 to grade 8 or DIN products range from class 4.8, 5.8,6.8, 8.8, 10.9 to class 12.9, with the diameter M6~M30 with cold heading length up to 300m.