ISO 9001:2015 certified quality, tight tolerances up to .0001 inches, and nationwide shipping since 1970.
Contact us at O’hare Precision Metals for more information about our materials and services.
O’Hare Precision Metals, LLC.
2404 W. Hamilton Rd. Arlington Heights, IL 60005
O’Hare Precision Metals is an ISO 9001:2015 certified precision grinding Chicago supplier delivering precision ground and cold finish round steel bars to aerospace, medical, automotive, and industrial manufacturers since 1970.
We supply precision ground bar stock that Chicago manufacturers depend on, from common carbon and stainless grades to specialty nickel alloys and titanium. Our facility in Chicago, IL, holds tolerances up to .0001 inches and a surface finish of 8 micro inches or better on every bar we process.
We offer precision-ground bar stock Chicago manufacturers rely on, backed by in-house grinding, complete bar processing, and ISO 9001:2015 certified quality on every order.
O’Hare Precision Metals has been a recognized leader in centerless grinding and precision-ground bar materials since 1970. We serve commercial and industrial customers nationally and worldwide with consistent quality at every phase of operation.
We carry stainless steel, alloy steel, carbon steel, tool steel, aluminum, nickel alloys, medical steel, brass, copper, bronze, and titanium round bars to meet manufacturer requirements across every industry we serve.
Our specialized grinding division grinds up to 9 inches in diameter and 50 feet in length using in-feed and thru-feed grinding, turning, polishing, heat treating, straightening, cutting, and chamfering from one facility.
We run centerless grinding, milling, custom machining, packaging, chamfering, saw cutting, burnishing, polishing, and turning all in-house under a single quality control inspection system from first operation through last.
We stock and grind a wide range of metals so you can source everything your application requires from one reliable location.
Alloy steel bar grades we carry include 4130, 4140, 41L40, 4142, 4340, 52100, 8740, and 9310. These grades offer high strength, hardenability, and wear resistance for aerospace, automotive, and oil and gas applications where performance under load drives material selection.
Our stainless steel round bar inventory covers grades 302, 303, 304, 304L, 316, 316L, 316LVM, 321, 347, 410, 416, 420, 420F, 430, 430F, 440, 440C, 446, 455, 15-5PH, and 17-4PH. These grades cover food processing, marine, medical implants, and precision machining, where corrosion resistance and surface finish are non-negotiable.
Carbon steel bar stock grades in our inventory include 1018, 1026, 1117, 11L17, 1141, 11L41, 1144, 1215, 12L14, 4140, 8620, and 86L20, ground and ready to ship. Carbon steel is a cost-effective, machinable option for general manufacturing and screw machine applications.
Tool steel bar stock grades we stock include A2, H13, O1, O6, S7, and W1 for cutting tools, forming dies, and precision tooling applications. Each bar goes through our grinding process with the care these grades require to preserve dimensional stability and hardness.
We supply medical stainless steel bars in chromium-nickel alloy grades, including 303, 304, and 316 variants for surgical instruments and medical device components. Each bar is ground to the tight tolerances and smooth finishes that medical machining requires on every order.
We carry brass, copper, and bronze, including 360 brass, 110 copper, 145 tellurium copper, 673 bronze, and 954 bronze for electrical, thermal, and precision bearing applications. These materials machine cleanly and hold tight tolerances through our grinding process.
We offer grinding services that Chicago manufacturers need to keep production running accurately and on schedule.
Our centerless grinding Chicago, IL operation grinds up to 9 inches in diameter and 50 feet in length, holding tolerances up to .0001 inches and a surface finish of 8 micro inches or better. That level of dimensional accuracy makes our ground bars the right fit for tight tolerance applications across every industry we serve.
We bundle bars using individually wrapped tubes and collars, custom wood boxes, and paper wrap in bundles. Every order ships protected and arrives in the condition your production floor requires without damage in transit.
Our precision grinding services Chicago bar polishing operation covers stainless steel, brass, copper, bronze, titanium, and aluminum. Every polished bar delivers a smooth, consistent surface finish that prevents corrosion and meets the finish requirements precision applications demand.
Bar straightening corrects alignment issues that cause runout in your machining equipment. We straighten bars to .005 T.I.R per foot so each piece loads cleanly and performs consistently from the first part through the last in your production run.
Chamfering cuts away excess metal to produce a symmetrical sloping edge on bar ends for specific applications. Every chamfered bar arrives with clean, finished ends that make your machining and installation operations faster and safer.
Our steel grinding services Chicago saw cutting operation uses automated CNC saws to cut bars up to 7 inches in diameter. Cold saw blades deliver clean, precise cuts with superior surface finish and minimal waste on every order.
At O’Hare Precision Metals, we’ve been supplying precision-ground and cold-finished round steel bars since 1970. Every bar that leaves our Arlington Heights, IL facility goes
When your production run depends on cylindrical bar stock holding the same dimension across every piece, the grinding process determines whether your schedule holds or
Picking the wrong steel grade costs you time on the machine and money on rework. Carbon and alloy steel round bars look similar on a
