Precision Twist Drill 0273272 Combo Drill Tap 8-32 Unc Hss

Product Description

The PRECISION TWIST DRILL 0273272 is a high-speed steel (HSS) combination drill-tap designed to drill a pilot hole and cut threads in a single pass. Built to the E651 specification with a notched point geometry, this tool reduces the axial force needed to start the cut and helps clear chips more efficiently than a standard point. The thread specification is 8-32 UNC, a coarse-thread Unified National Coarse size common in light mechanical assemblies. Machinists, maintenance technicians, and pipe and electrical trade professionals use combination drill-taps to streamline fastener work in production and field service settings.

This combo drill-tap is suited for use in ferrous and non-ferrous materials where a tapped through-hole is required. The 8-32 UNC size is widely used in electrical panel work, equipment enclosures, junction boxes, and general sheet metal or light structural applications. The HSS construction provides adequate hardness and wear resistance for hand-tapping operations and low-speed machine tapping. The notched point promotes self-centering and reduces walking on entry, which is useful when drilling into finished surfaces without a center punch.

Key Features

• Combination drill-tap completes pilot drilling and thread cutting in one operation
• 8-32 UNC thread form for standard coarse-thread fastener applications
• High-speed steel (HSS) construction for durability across ferrous and non-ferrous materials
• Notched point geometry promotes self-centering and efficient chip evacuation
• E651 specification design for consistent dimensional accuracy
• Sold individually — minimum order quantity of one

Compatibility

Designed as a standard 8-32 UNC combination drill-tap for use in hand-tap handles, drill presses, or low-speed tapping machines that accept standard shank tooling of this size class.

Installation Notes

This tool should be installed and operated by machinists or qualified tradespeople familiar with tapping speeds and feeds for HSS tooling. Always use appropriate cutting fluid for the material being tapped to extend tool life and improve thread quality. Secure the workpiece firmly before beginning the operation, and run at low RPM consistent with HSS tapping recommendations for the material. Avoid reversing under power without a reversing tap attachment to prevent tool breakage.

Technical Specifications

• Thread Size: 8-32 UNC
• Point Style: Notched Point
• Material: High-Speed Steel (HSS)
• Specification: E651
• Thread Standard: Unified National Coarse (UNC)
• Weight: 0.2 pounds
• Sold As: Each

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 0273272