Thumb Nut Head Shape Round Finish Plain Material Grade/Class 18-8 Material Stainless Steel Thread Size 1/4 In.-20 Overall Height 1/2 in Head Height 1/4 in Head Diameter 3/4 in Base Height 1/4 in Base Diameter 1/2 in Thread Length Fully Threaded System of Measurement Inch Thread Direction Right Hand Material Quality Standards ASTM 581/582 Pack Size Small Pack Package Quantity 5