Precision Twist Drill 5995473 No. 52 Hss Jobber Drill

Product Description

The PRECISION TWIST DRILL 5995473 is a high-speed steel jobber-length drill bit in wire gauge size No. 52, equivalent to 0.0635 inches in diameter. It features a 135-degree split point with web thinning for reduced thrust and faster penetration into work material. The straw (bronze) coating provides surface hardness and heat resistance during cutting operations. At 1.875 inches overall length with a 0.875-inch flute, this is a short, precise drill suited for tight-tolerance drilling in small-diameter applications. HVAC techs, electricians, plumbers, and general fabricators reach for this size when drilling through thin sheet metal, small brackets, or fastener clearance holes.

This bit is rated for general-purpose drilling with a primary application in high-temp alloys and similar materials, per the manufacturer workpiece material designation. The 14xD flute-to-diameter ratio and regular spiral flute geometry support chip evacuation in deep relative-to-diameter holes. Typical install scenarios include sheet metal fabrication shops, mechanical rooms, and field service work where small-diameter precision holes are required. The straight cylindrical shank seats directly in standard drill chucks without adapters.

Key Features

• Wire gauge No. 52 diameter — 0.0635 inches — for small-clearance and precision hole applications
• 135-degree split point with web thinning reduces walking and lowers required drilling thrust
• High-speed steel construction with straw bronze coating for added surface hardness and heat resistance
• Regular spiral flute geometry promotes clean chip evacuation during through-hole drilling
• Straight cylindrical shank fits standard keyless and keyed drill chucks without modification
• ANSI-standard specification — heavy-duty grade for consistent dimensional accuracy

Compatibility

Part of the HX10-HX15-HX18 series. Designed as a general-purpose jobber drill for use in any standard drill press, hand drill, or CNC spindle accepting a straight-shank bit at 0.0635 inches shank diameter. Primary workpiece material classification covers high-temp alloys and similar materials per manufacturer designation codes P, M, K, and S.

Installation Notes

Secure the shank fully in the chuck jaws and verify concentricity before drilling. Ensure the workpiece is clamped or fixtured to prevent rotation, especially in thin sheet material. Use appropriate cutting fluid or lubrication when drilling hard alloys to extend tool life. Coolant-through is not supported by this bit; external fluid application only.