Precision Twist Drill 5996352 Letter K Hss Jobber Drill

Product Description

The PRECISION TWIST DRILL 5996352 is a Letter K jobber-length drill bit ground from high speed steel with a bronze coating and a 135-degree split-point geometry. Sized at 0.2810 inches (9/32 inch) in diameter, it cuts right-hand with a regular spiral flute and a web-thinned, tapered web to reduce thrust and improve chip evacuation. Overall length is 4.25 inches with a flute length of 2.9375 inches, giving it the reach needed for standard through-hole and blind-hole work. The straight-cylindrical shank seats directly in a three-jaw chuck without adapters. This bit is a general-purpose drilling tool suited to production and maintenance environments.

The 5996352 is engineered for drilling steel, stainless steel, cast iron, superalloys, and titanium — material codes P, M, K, and S in the ISO classification system. The 135-degree point angle flattens the entry curve on hard materials and reduces walking on curved or coated surfaces. The bronze coating provides mild lubricity and heat resistance during moderate-speed dry or flood-coolant drilling operations. It is a common choice in shops running manual drill presses, CNC machining centers, and handheld drills where a standard jobber-length bit covers the majority of everyday hole requirements.

Key Features

• Letter K diameter: 0.2810 inches (9/32 inch) for precise fractional and letter-size hole requirements
• 135-degree standard split point with web thinning reduces entry thrust and minimizes bit walk
• High speed steel construction with bronze coating for improved lubricity and surface durability
• Regular right-hand spiral with 2-flute configuration promotes efficient chip removal
• Straight-cylindrical shank compatible with standard three-jaw and collet chuck systems
• Meets ANSI standards for jobber-length drill geometry and dimensional tolerances

Compatibility

Designed as a general-purpose replacement or production drill bit in the PRECISION TWIST DRILL Series HX10-HX15-HX18 line, suitable for use in any standard drill press, machining center, or handheld drill with a chuck capacity of 9/32 inch or larger.

Installation Notes

Install this bit in a properly sized three-jaw or collet chuck, ensuring full shank engagement before tightening. Secure workpieces firmly before drilling to prevent rotation and bit breakage. Follow applicable ANSI and shop safety standards for speed and feed selection when drilling hard materials such as stainless steel and superalloys. Inspect the cutting edges for wear or chipping before each use and replace when the point geometry no longer holds tolerance.