Four Corners, LLC

Founded in 1962, Hygrade Precision Technologies Inc. specializes in precision contract machining, grinding and lapping services. Based in Plainville, Conn., the company operates a 40,000-square foot facility and is one the largest flat grinding facility in the northeast. Some of the products and services offered by it include flat grinding, flat lapping, cylindrical grinding, computer numerical control multi-axis machining, as well as non-destructive testing and inspection services. The company works with various trade associations, such as the Connecticut Tooling & Machining Association (CTMA), National Tooling & Machining Association (NTMA), Manufacturing Alliance of Connecticut (MAC) and Connecticut Business & Industry Association (CBIA). Hygrade Precision Technologies Inc. is AS9100 Rev. B/ISO9001:2000 and AC 7018 certified.

Founded in 1990, Whalley Precision Inc. is a full-service manufacturing company offering general fabrication, machining and assembly. Based in Southwick, Mass., it offers an array of services, such as computer numerical control/ manual milling and turning, jig boring, honing, welding, metal forming and robotic welding, grinding and assembly. The company also produces parts and components in steel, aluminum, stainless steel or plastics and engages in turnkey services. Whalley Precision Inc. is a Federal Aviation Administration certified company.

Coronet Machinery Corporation, based in Bethel, CT, is a premier precision manufacturing company with over 47 years of experience, providing exceptional quality and service across various industries including aerospace, defense, medical, and packaging. The company's commitment extends beyond manufacturing parts, as they play a crucial role in building the infrastructure that supports business efficiency and drives next-generation innovation. With a focus on value engineering, quality control, and client satisfaction, Coronet has received accolades from numerous clients for their reliable delivery and outstanding packaging solutions. Their collaborative approach and adaptability in meeting production requirements have solidified their reputation as a dependable partner in the precision manufacturing sector. Generated from the website