Precision Twist Drill 5997170 No 43 Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5997170 is a No. 43 wire gauge high speed steel jobber drill bit designed for general-purpose drilling in a wide range of materials. It carries a 135-degree split-point angle with web thinning, which reduces walking on entry and lowers the thrust needed to start a hole. The bright, uncoated finish suits applications where lubrication is applied externally. At 2.25 inches overall length with a 1.25-inch flute, this compact drill is well suited to tight-clearance work. The straight cylindrical shank measures 0.1875 inches in diameter, fitting standard chucks and collets. This is a production-grade tool from the QC21P series, intended for installation by machinists, pipefitters, and HVAC or electrical tradespeople who need consistent hole quality in small-diameter work.

The 5997170 is rated for drilling steel, aluminum, and other non-ferrous materials, covering ISO material codes P, M, K, N, and S. It is well matched to hand-drill, drill press, and CNC drilling applications where a 0.0890-inch diameter hole is required. The 14xD flute-to-diameter ratio and regular spiral flute design support efficient chip evacuation in through-hole and blind-hole applications. Each unit is sold individually, though the minimum order quantity is 12 pieces, making it practical for tool-crib restocking or production line supply.

Key Features

• No. 43 wire gauge diameter: 0.0890 inches for precision small-hole work
• 135-degree point angle with web thinning reduces walking and lowers entry thrust
• High speed steel construction handles steel, aluminum, and non-ferrous alloys
• Bright uncoated finish compatible with external cutting fluids and lubricants
• Regular spiral, two-flute design promotes clean chip evacuation
• Straight cylindrical shank fits standard drill chucks and collets without adapters

Compatibility

Designed as a general-purpose OEM-style jobber drill for use in standard three-jaw chucks, keyless chucks, and collet holders accepting a 0.1875-inch straight shank. Suitable for drilling steel, aluminum, and non-ferrous materials per ISO workpiece material codes P, M, K, N, and S.

Installation Notes

Install in a properly sized chuck or collet and verify the shank is fully seated before applying power. Power down or de-energize the drill press or hand tool before changing bits. Apply an appropriate cutting fluid or lubricant when drilling steel to extend tool life and maintain hole quality. Dispose of worn bits according to shop safety protocols, as broken small-diameter drills present a puncture hazard.