Product Review
M8 x 1.25 A2 Stainless Steel DIN 6923 Serrated Hex Flange Nut
  Width Measured From Flat to Flat :13 mm
  Overall Width: 17.9 mm
  Overall Height: 8 mm
  Hex Socket Drive : 13 mm
Product Attributes
  Wrench Size :13mm
  Grade :A2
  Thread Size :1.25
  Thickness :8mm
  Diameter-Thread Size :M8-1.25
  Finish :Plain
  Diameter :M8
  Material :Stainless Steel
  Specification :DIN 6923
  Thread :Coarse
  Type :Serrated Flange Nut
  System of Measurement :Metric
  UOM :25 PCS
Flange nuts have a washer-like base to distribute pressure over a greater surface area and ensure the fastener stay tight.
They are commonly used in manufacturing assembly lines where operations are speeded by using a single fastener instead of a nut and washer.
Type 304 (18-8) is an austenitic steel possessing a minimum of 18% chromium and 8% nickel, combined with a maximum of 0.08% carbon. It is a nonmagnetic steel which cannot be hardened by heat treatment, but instead. must be cold worked to obtain higher tensile strengths.
Yes, You CAN get all of Your fasteners from a single source-Fullerkreg