I was repairing a1959 Benjamin 310 pump pellet gun. I had a missing muzzle plug screw and the other was bent. It was a #4-36 oval head slotted screw. These folks had it in a larger quanity and cheaper than buying from others on line that only sold 2 screws. Shipment was fast and quality was great. I did have to trim the length but no big deal.