Amazon.com: VIGRUE 304 Stainless Steel Screws and Nuts, M3 M4 M5 M6 Hex Socket Head Cap Screws Assortment Set Kit with Storage Box (520 Pcs Hex Socket Head Cap Screws Nuts) :
600pcs M6 M5 M4 M3 Hardware Nuts and Bolts, Machine Screws with Flat Washers, 304 Stainless Steel Metric Bolt Assortment with Allen Washers Sets: Amazon.com: Industrial & Scientific