Allen Nut System of Measurement Inch Insert Diameter 1/4 in Overall Length 15/64 in Installed Length Not Applicable Thread Size #6-32 Thread Direction Right Hand Thread Type Coarse Flange Diameter Not Applicable Flange Thickness Not Applicable Material Stainless Steel Material Grade/Class 18-8 Finish Plain Body Texture Knurled Compatible Material Metal Drill Bit Size 17/64 in Maximum Hole Diameter 0.27 in Minimum Material Thickness 0.23 in