Precision Twist Drill 5995498 Jobber Drill Bit 6 Hss

Product Description

The PRECISION TWIST DRILL 5995498 is a wire-gauge jobber-length drill bit sized at number 6 (0.2040 inches), designed for general-purpose drilling in ferrous and hard-to-machine materials. Built from high speed steel with a bronze coating, it features a 135-degree split-point tip and a web-thinned, tapered web geometry that reduces walking on entry and lowers thrust force at the drill point. The straight cylindrical shank measures 0.2040 inches in diameter and fits standard drill chucks without adapters. At 3.75 inches overall length with a 2.5-inch flute, this bit suits hand drills, drill presses, and CNC spindles alike.

This jobber bit is intended for drilling steel, stainless steel, cast iron, superalloys, and titanium in production and maintenance environments. The HX10-HX15-HX18 series targets applications where a reliable general-purpose HSS bit is preferred over carbide for interrupted cuts or hand-held work. It is sold individually and is a common stock item for tool cribs, service vans, and shop floor tooling stations serving metalworking trades.

Key Features

• Wire size number 6 — 0.2040-inch diameter for precise hole sizing
• 135-degree split point reduces walking and lowers thrust on entry
• Bronze coating improves lubricity and surface hardness over uncoated HSS
• Web-thinned tapered web reduces chisel edge load in harder materials
• Right-hand spiral flute with regular helix clears chips efficiently in through-hole drilling
• ANSI-standard geometry — compatible with standard jobber-length drill holders and chucks
• No coolant-through — suited for conventional flood, mist, or dry drilling setups

Compatibility

Designed for use in standard straight-shank drill chucks on drill presses, hand drills, and CNC machining centers. Compatible with workpiece materials including steel, stainless steel, cast iron, superalloys, and titanium as indicated by material codes P, M, K, and S. Part of the PRECISION TWIST DRILL HX10-HX15-HX18 series.

Installation Notes

Secure the straight cylindrical shank firmly in a keyed or keyless chuck before operation and verify concentricity before drilling into hard materials. Apply appropriate cutting fluid or coolant for stainless steel, superalloys, and titanium to extend tool life and manage heat buildup. Inspect the drill point for chipping or wear before each use, particularly after drilling abrasive or work-hardened materials. Drilling should be performed by qualified machinists or tradespeople following applicable shop safety procedures and equipment manufacturer guidelines.