Osg 10193505 Screw Machine Drill Bit 0.1935 in Cobalt Hss

Product Description

The OSG 10193505 is a screw machine length drill bit designed for high-performance drilling in steel and alloy steel. Built from cobalt high speed steel with a coated finish, it delivers superior heat and wear resistance compared to standard HSS tooling. The 130-degree drill point angle and R-thinned web reduce thrust and improve chip evacuation. At 3 inches overall length with a 1-3/16 inch flute length, this stub-length geometry provides increased rigidity over jobber-length bits, making it well suited to CNC machining centers, drill presses, and manual screw machine operations where chatter and deflection must be minimized.

This bit is intended for production and maintenance drilling in ferrous materials, specifically steel and alloy steel. Wire size 10 corresponds to 0.1935 inches (4.92 mm) diameter. The straight-cylindrical shank is compatible with standard drill chucks and collet holders. The screw machine length format is commonly chosen for through-hole and shallow-hole operations where a shorter, stiffer tool reduces runout and improves positional accuracy. It fits within the OSG Series 1000 product line and falls in the 0.1500 to 0.2000 inch diameter range.

Key Features

• Cobalt high speed steel construction for elevated heat resistance in ferrous drilling
• 130-degree drill point angle reduces thrust and improves centering on entry
• R-thinned web lowers cutting force and extends tool life
• Screw machine (stub) length at 3 inches overall provides superior rigidity over jobber bits
• Regular spiral flute with 3xD flute-to-diameter ratio for efficient chip removal
• Coated finish for added surface hardness and lubricity

Compatibility

Designed as a high-performance OEM-style replacement or production drill bit for operations involving steel and alloy steel workpieces in the 0.1500 to 0.2000 inch diameter range using standard straight-shank drill chucks or collet holders.

Installation Notes

Installation and use should be performed by machinists or qualified trade personnel familiar with rotating cutting tool safety. Secure the shank fully in a properly sized chuck or collet before operating. Ensure the machine spindle is at a complete stop before changing or inspecting the bit. Follow applicable shop safety standards and machine manufacturer guidelines for speed and feed rates based on workpiece material and hole depth.