Ahhh simplicity!! I love the solution by Paul Geithner and Harold O'Reilly ... just cut screwdriver slots in them and unscrew them. Then, reuse them!! Many tks also to Jack Kagy, Jim (britbits at tiu.net ), and Mike Ross for sending me the actual size - 5/16" x3/4" UNF (18 pitch ) Many many tks! Harve Thorn NASS #79