Osg 10368005 Screw Machine Drill Bit 0.368in Cobalt Hss

Product Description

The OSG 10368005 is a screw machine length drill bit designed for high-performance drilling in steel and alloy steel applications. Built from cobalt high speed steel with a coated finish, it delivers increased heat and wear resistance compared to standard HSS tooling. The bit features a 130-degree split point, right-hand spiral flutes, and an R-thinned web for reduced thrust and improved chip evacuation. At 0.368 inches (Letter Size U, 9.35 mm) in diameter, it fits standard straight-cylindrical shank tool holders and is suited for production drilling environments where tool life and hole accuracy matter.

This drill bit is intended for use in machining and fabrication operations on steel and alloy steel workpieces. The screw machine length design provides a shorter, more rigid profile than jobber-length bits, making it well suited for drill press, turret lathe, and CNC machining center applications where chatter and deflection must be minimized. It is sized for the 0.3500 to 0.4000 inch diameter range and belongs to OSG Series 1000, a high-performance line targeted at production and precision machining shops.

Key Features

• Cobalt high speed steel construction for elevated heat resistance in steel and alloy steel cutting
• 130-degree drill point angle with R-thinned web reduces entry thrust and improves self-centering
• Regular spiral, 2-flute design promotes efficient chip evacuation in through-hole and blind-hole drilling
• Screw machine (stub) length body increases rigidity and reduces deflection versus jobber-length bits
• Straight-cylindrical shank fits standard drill chucks and collet holders without adapters
• Coated finish extends tool life in high-cycle production environments

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for screw machine length drill bit applications in the 0.3500 to 0.4000 inch diameter range, compatible with standard straight-shank drill chucks and collet systems used in CNC and manual machining equipment.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before seating the shank. Verify chuck or collet runout before production use, as excess runout will reduce hole tolerance and shorten tool life. Follow the machine manufacturer and OSG tooling guidelines for speeds, feeds, and cutting fluid application appropriate to the workpiece material.