These screws have good chemical resistance and may be mildly magnetic They’re angled under the head to sit flush within countersunk holes Length is measured from the top of the head Package include: High Quality 240PCS #6-32 UNC 304 Stainless Steel Flat Head Phillips Screws and Hex Nuts Assortment Kit #6-32 UNC Flat Head Phillips Screws and Nuts Kit total 240 pieces. Come with the plastic box: List(Type,Thread/Length,Quantity): Flat Head Phillips Screws #6-32x1/4" 20PCS Flat Head Phillips Screws #6-32x5/16" 20PCS Flat Head Phillips Screws #6-32x3/8" 20PCS Flat Head Phillips Screws #6-32x1/2" 20PCS Flat Head Phillips Screws #6-32x9/16" 20PCS Flat Head Phillips Screws #6-32x5/8" 20PCS Flat Head Phillips Screws #6-32x3/4" 20PCS Flat Head Phillips Screws #6-32x7/8" 20PCS Flat Head Phillips Screws #6-32x1" 20PCS Hex Nuts #6-32 UNC 60PCS Packing contents: 240 #6-32 UNC 304 Stainless Steel Phillips Flat Head Machine Screws Nuts Assortment Kit in a plastic box They are Coarse thread.Screws and Nuts Thread Diameter: #6; Thread Pitch: 32Per Inch.Thread Direction: Right Hand;Screws have a standard 82° bevel under the head They are Made of 304 stainless steel;304 stainless steel have good chemical resistance and may be mildly magnetic High Quality 240PCS #6-32 UNC 304 Stainless Steel Phillips Flat Head Machine Screws and Hex Nuts Assortment Kit Screws have Different length:1/4",5/16",3/8",1/2",9/16",5/8",3/4",7/8",1"(Length is measured from the top of the head),Each 20 Pieces;Matching #6-32 Hex Nuts 60 pieces Screws includes most common ANSIB18.6.3F standard sizes so you can easily replace a lost screw;All contained in a compact and see through compartmented plastic Box.Easy to install and use