'Socket Head Cap Screw, System of Measurement Inch, Cylindrical, Basic Material Nylon, Material Grade Not Graded, 1/4 In.-28, Length 3/8 In., Fastener Finish Plain, Fastener Thread Type UNF, Drive Type Hex Socket, Drive Size 3/16 In., Thread Style Fully Threaded, Thread Direction Right Hand, Thread Length 3/4 In., Head Height 1/4 In., Thread Dia. 1/4 In., Package Quantity 20'