Explain? Every base comes with the proper mounting screws. From Seekins' site:
"Seekins Precision Picatinny scope bases are precisely manufactured to the 1913 picatinny spec. All of our rifle bases incorporate a recoil lug built into the base to eliminate stress on the mounting screws as well as eliminate any movement during recoil. Seekins Precision bases are available in 0, 20 and 30 MOA to add adjustment in your scope for extended range. We chose grade 8, T15 Torx screws to solidly attach our base to your action. Made to perfection from 7075 Billet aluminum and Type III hard coat anodize. Weight is approximately 2 ounces on a short action base. "
Seekins is an excellent choice. Not only excellent products but Glen supports the sports and has been a member here on the Hide for years. Not to mention a great guy.
The Vortex PST is a very good scope in that price range. Lots of good features. It will work very well for you.