M&M Quality Grinding is a leading manufacturer of precision ground bar stock, and a provider of contract bar processing services. With over 40 years of experience in centerless grinding, bar straightening, bar polishing, bar chamfering, precision saw cutting, near net machining, and specialty packaging, we have built our reputation on delivering exceptional tight tolerance ground bars for customers throughout North America and beyond. We carry an extensive inventory of precision ground bar stock and oversized material for mills, service centers, contract manufacturers and OEMs across the US, Canada and Mexico that are producing parts for the medical, automotive, aerospace, military and defense, transportation and food service, and a variety of other demanding industries. We also offer a full-service centerless grinding facility for customer supplied material. M&M processes bar stock in stainless steel, carbon steel, steel alloys, aluminum, brass, bronze, copper, nickel alloys, and thermoplastics. What Makes Us Unique: Precision and Excellence in Everything We Do • Over 40 years’ experience in centerless grinding • Strong vendor relationships including mill partnerships • Automated production lines • Extensive number of machines • Quick turnaround times • Fast quoting capabilities • Strong management commitment to innovation and technology • ISO Certification • Ability to grind metals and thermoplastics • Tight tolerance capabilities (to +/- .0001”) • Surface finishes to 6RMS • Strong partnerships with finishing service companies for heat treating, etc. • Conveniently located in the Chicago metro area