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Amazon.com: Machine Screws Nuts Kit M2 M2.5 M3 M4 M5 Bolt Cap Screw Assortment Set Pan Head Cross Groove Type 304 Stainless Steel - 160PCS with Storage Box : Industrial & Scientific
M4 M3 M2 Socket Head Cap Screws Bolts Nuts Washers Assortment Kit with Allen Wrenches, Small Metric Screws Set, Black Screws 1080PCS, Class 12.9 Alloy Steel: Amazon.com: Industrial & Scientific
Amazon.com: 30 Pcs M4 Hex Bolt M4-0.8 x 6mm UNC Hex Head Screw Bolts A2-70(304) Stainless Steel Fully Threaded Hex Tap Bolts,Plain Finish,Fully Threaded (M4 x 6mm) : Industrial & Scientific
M4 x 40MM Socket Head Cap Screws,304 Stainless Steel, Quantity 30: Amazon.com: Industrial & Scientific