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The OSG 300-0935 is a solid carbide chucking reamer designed for precision hole finishing in general machining applications. Built to Series 300D standards, it produces finished bores to a wire size 42 diameter of 0.0935 inches with a tight tolerance of +0.0001 to +0.0004 inches. The four-flute straight configuration provides consistent chip evacuation and bore finish in through-hole and shallow-bore work. The bright, uncoated carbide construction suits a broad range of workpiece materials. Machinists and tool-and-die professionals install this reamer in CNC machining centers, knee mills, and drill presses using a standard collet or drill chuck.
This reamer is sized for wire gauge 42 applications, covering the decimal diameter range of 0.0500 to 0.0999 inches. With a 2-inch overall length and a 0.5-inch flute length, it fits close-clearance setups where tool overhang must be minimized. The straight cylindrical shank seats directly in standard ER collets or keyed chucks without an adapter. It is well suited to production runs requiring repeatable hole sizing in steel, aluminum, brass, and similar machinable alloys.
Designed as an OEM-style precision reamer for general machining applications requiring wire size 42 hole finishing in standard drill press, knee mill, or CNC machining center setups.
Installation is performed by qualified machinists. Secure the straight cylindrical shank in a collet or keyed chuck with adequate clamping force before use. Power down and de-energize the machine spindle completely before inserting or removing the reamer. Use appropriate cutting fluid or coolant compatible with the workpiece material; this tool does not support through-tool coolant delivery. Inspect the cutting edges for chipping before each use, as carbide tools are brittle and sensitive to interrupted cuts and side loading.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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