Amazon | Steel Hex Nut, Plain Finish, Class 6, DIN 934, Metric, M2-0.4 Thread Size, 4 mm Width Across Flats, 1.6 mm Thick (Pack of 100) by Small Parts | 六角ナット | DIY・工具・ガーデン 通販
Brass Hex Nut, Plain Finish, DIN 934, Metric, M3-0.5 Thread Size, 5.5 mm Width Across Flats, 2.4 mm Thick (Pack of 100): Amazon.com: Industrial & Scientific