Small Parts Steel Hex Nut, Zinc Plated Finish, Class 8, JIS B1181, M8-1.25 Thread Size, 12 mm Width Across Flats, 6.5 mm Thick (Pack of 50): Metric Nuts: Amazon.com: Industrial & Scientific
1504071 | Phoenix Contact Flat Nut for use with Flush Type Connector | RS
KIPP - Knurled nuts steel and stainless steel DIN 467 flat
Flat Nut Stainless Steel Countersunk Head Rivet Sleeve Nuts Custom
Hillman #10 x 24 Black Phosphate Steel Flat Nut (4-Count) in the Specialty Nuts department at Lowes.com
Everbilt #8-32 Plain Steel Flat Type Speed Nut (2 per Pack) 800108 - The Home Depot