Self Locking Thread Insert Compatible Material Metal Compatible Tap Size 1/4 In.-28 Drill Bit Size #3 External Thread Fit 2A External Thread Size 1/4 In.-28 Finish Plain Insert Diameter 1/4 in Internal Thread Fit 2B Internal Thread Size #8-32 Material Stainless Steel Material Grade/Class 18-8 Maximum Hole Diameter 0.213 in Minimum Installation Depth 11/32 in Overall Length 19/64 in System of Measurement Inch Thread Direction Right Hand Thread Type Coarse Fine