Amazon.com: M6 M8 Black Nylon Full Thread Hex Tap Bolts Metric Bolts Set Screws DIN933 (10Pcs, M6x10mm) : Industrial & Scientific
Amazon.com: The Hillman Group 4469 M8 x M6 x 31 Reducing Stud, 5-Pack : Patio, Lawn & Garden
Amazon.com: M6-1.0 x 20mm Flat Head Socket Cap Screws (M5 to M8 Available), Full Thread, DIN7991, Stainless Steel 304 (18-8), Allen Hex Drive, Pack of 25 : Industrial & Scientific