XIANQI High Quality 360PCS #2-56 #4-40 #6-32 UNC 304 Stainless Steel Phillips Pan Head Machine Screws and Nuts Assortment Kit Thread Diameter: #2; Thread Pitch: 56 Per Inch(Coarse); Thread Diameter: #4; Thread Pitch: 40 Per Inch(Coarse); Thread Diameter: #6; Thread Pitch: 32 Per Inch(Coarse) The assortment contains:#2x5/32" to 1/2";#4x1/4" to 5/8";#6x1/4" to 3/4"(Length is measured from under the head),Each 20PCSand Nut Each 40PCS They are Made of 304 stainless steel;304 stainless steel have good chemical resistance and may be mildly magnetic new,All contained in a compact and see through compartmented plastic Box.Easy to install and durable to use Product description: Made from 304 Stainless steel, these pan head screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head Package include: High Quality 360PCS #2-56 #4-40 #6-32 UNC 304 Stainless Steel Pan Head Phillips Screws and Nuts Assortment Kit #2-56 #4-40 #6-32 UNC Pan Head Phillips Screws and Nuts Kit total360 pieces. Come with the plastic box: List(Type,Thread/Length,Quantity) Pan Head Phillips Screws #2-56x5/32" 20PCS Pan Head Phillips Screws #2-56x1/4" 20PCS Pan Head Phillips Screws #2-56x5/16" 20PCS Pan Head Phillips Screws #2-56x1/2" 20PCS Nuts #2-56 40PCS Pan Head Phillips Screws #4-40x1/4" 20PCS Pan Head Phillips Screws #4-40x5/16" 20PCS Pan Head Phillips Screws #4-40x3/8" 20PCS Pan Head Phillips Screws #4-40x5/8" 20PCS Nuts #4-40 40PCS Pan Head Phillips Screws #6-32x1/4" 20PCS Pan Head Phillips Screws #6-32x3/8" 20PCS Pan Head Phillips Screws #6-32x5/8" 20PCS Pan Head Phillips Screws #6-32x3/4" 20PCS Nuts #6-32 40PCS Packing contents: 360PCS #2-56 #4-40 #6-32 UNC 304 Stainless Steel Phillips Pan Head Machine Screws Nuts Assortment Kit in a plastic box.