M10-1.25 Fine Thread Non-Serrated Hex Flange Nut DIN 6923, Class 8, Plain Finish (no rust protection)
NRC693-500
https://www.fastenermart.com/mm5/graphics/00000001/DIN6923.gif
20.67
235.72
2
20.67
100.00
pcs
235.72
1500.00
pcs

DIN 6923 Specifications