200Pcs Stainless Steel 4-40 to 10-32 Allen Head Hex Socket Screws Bolts Assortment Kit 200Pcs Stainless Steel 4-40 to 10-32 Allen Head Hex Socket Screws Bolts Assortment Kit Meterial: 304 Stainless Steel,The assortments contain the following sizes: 10pcs 4-40x1/8", 10pcs 4-40x3/16", 10pcs 4-40x1/4", 10pcs 4-40x5/16",10pcs 6-32x1/8", 10pcs 6-32x3/16", 10pcs 6-32x1/4", 10pcs 6-32x5/16", 10pcs 8-32x3/16", 10pcs 8-32x1/4", 10pcs 8-32x5/16", 10pcs 8-32x3/8",10pcs 10-24x1/4", 10pcs 10-24x5/16", 10pcs 10-24x3/8",10pcs 10-24x1/2", 10pcs 10-32x1/4", 10pcs 10-32x5/16", 10pcs 10-32x3/8",10pcs 10-32x1/2".