I cant say enough good things about Set Screw & Mfg! We have been doing business with them for more than 40 years. The customer service is always amazing. We buy almost all of our Square Head Set Screws and Slotted Set Screws from them. The price is great and the delivery is on time. They stock a ton of Slotted Set Screws and anything with a delivery is minimal. They also import parts and the delivery is honest and the quality is always a priority. You will not be disappointed.