M4 Screws 5mm To 30mm Length Uxcell® M5x18mm 304 Stainless Steel Hex Key Bolt Socket Head Cap Screws 20pcs Hex Socket Head Cap Screws ✔ Includes 425 Pcs, 11 Sizes, Thread Pitch 0., 7 mm, Thread Size( Diameter) 4mm, Thread Length From 5 mm to 30 mm, Hex Socket Head Cap Screws: M4 x 5, M4 x 6, M4 x 8, M4 x 10, M4 x 12, M4 x 14, M4 x 16, M4 x 18, M4 x 20, M4 x 25, M4 x 30; Material of Screws: Stainless Steel 304, High Strength and Anti-corrosion in Various Environments iexcell 660 Pcs M4 x 5/6/8/10/12/14/16/18/20/25/30 Stainless Steel 304 Hex Socket Head Cap Screws Bolts Nuts Washers Assortment Kit ; UPC, 601629967622 ✔ Includes 425 Pcs Thread Pitch 0., 7mm M4 Nuts to Meet Different Applications; Material of Nuts: Stainless Steel 304, High Strength and Anti-corrosion in Various Environments Contains 425 pieces, 12 sizes, thread pitch 0.7mm, thread size (diameter) 4mm, thread length from 5mm to 30mm, socket head screws They are fastened with an Allen wrench, which is also called a hex wrench or hex key. iExcell 50 Pcs Stainless Steel 304 M4 x 30/35/40/45/50mm ✔ Includes 1 Pcs Hex Key, Hex Size: 3., 0 mm, to Drive These Screws Conveniently and Easily; Material of Hex Key: Chrome-Vanadium Steel, Nickel Plated