Osg 10404005 Screw Machine Drill Bit 0.404 in Cobalt Hss

Product Description

The OSG 10404005 is a screw machine length drill bit designed for high-performance drilling in steel and alloy steel applications. It measures 0.404 inches (Letter Y, 10.26 mm) in diameter with an overall length of 4-1/32 inches and a flute length of 1-15/16 inches. Built from cobalt high speed steel with a coated finish, this bit handles demanding materials that standard HSS tooling cannot. The 130-degree split point and R-thinned web reduce thrust and improve penetration in tough ferrous stock. A tapered web configuration adds rigidity and supports the 3xD flute-to-diameter ratio typical of screw machine length tooling.

Screw machine length drill bits are the standard choice when rigidity matters more than depth reach. This bit is suited for CNC machining centers, drill presses, and screw machines running production runs in steel and alloy steel. The shorter flute length relative to jobber bits minimizes deflection in interrupted cuts and close-tolerance hole work. Machinists and toolroom technicians running ferrous workpieces in light to medium manufacturing environments will find this a practical, high-performance option.

Key Features

• Cobalt high speed steel construction for improved heat and wear resistance in ferrous materials
• 130-degree drill point angle for reduced thrust and cleaner entry on hard steel
• R-thinned web reduces cutting resistance at the chisel edge
• Straight-cylindrical shank fits standard drill chucks and collet holders without adapters
• Regular spiral flute with 3xD ratio provides chip clearance in screw machine length format
• Right-hand cut, two-flute spiral design compatible with conventional CNC and manual spindle rotation

Compatibility

Designed as an OEM-style replacement or direct-use screw machine length drill bit for Series 1000 tooling applications targeting steel and alloy steel primary workpiece materials with straight-cylindrical shank tool holders.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom technicians familiar with cutting tool setup. Secure the straight-cylindrical shank fully in the chuck or collet before operation, and verify runout with a dial indicator on precision work. Power down and de-energize the spindle before changing tooling. Follow shop safety practices and applicable OSHA machine guarding standards when operating drill presses or CNC equipment.