High Quality 220PCS #4-40 UNC 304 Stainless Steel Phillips Pan Head Machine Screws and Nuts Assortment Kit
Thread Diameter: #4; Thread Pitch: 40 Per Inch(Coarse)
The assortment contains:#4-40x3/16",#4-40x1/4",#4-40x5/16",#4-40x3/8",#4-40x1/2",#4-40x5/8",#4-40x3/4",#4-40x7/8",#4-40x1"(Length is measured from under the head),Each 20 piece,and Nut 40 piece
They are Made of 304 stainless steel;304 stainless steel have good chemical resistance and may be mildly magnetic
100% new,All contained in a compact and see through compartmented plastic Box.Easy to install and durable to use