Ruger Mk I/Mk Ii Allen Head Grip Screws
Buy It Now: $56.99
These excellent looking Allen-head screws will dress up any Ruger Mk I or Mk II pistol plus give positive wrench engagement to help prevent stripped-out grip screws.
Same diameter head as the standard screw, fits flush on all factory and aftermarket grips.
SPECS: Steel, blue or Nickel plated. 6-40 tpi, .250" (6.3mm) diameter head, .325" (8.1mm) long. 3/32" Allen head. More . . .