Best Spiral Point Taps for Through-Hole Tapping (2026)
We prioritized taps with spiral-point geometry, HSS construction, common through-hole thread sizes, and pack value suitable for workshop use
The Verdict
- Best Overall: 1/4"-20 HSS 2 Flute Spiral Point Tap (Pack of 12) DWT — Best for general-purpose 1/4-20 work: HSS 2-flute spiral point design provides reliable chip ejection for through holes
- Best Value: DWTGT6X1/2-13 pulley gun tap, 1/2-13 x 6 — Best for larger 1/2-13 through-hole taps: long 6-inch flute length and spiral point geometry help clear chips in deep holes
This roundup covers spiral point taps suited for through-hole tapping in metalworking, focused on 2-flute HSS designs and common UNC/UNF sizes. Selections were made for fit to through-hole applications, material and flute design, and overall value across pack sizes
Top Picks
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1
Best Overall 1/4"-20 HSS 2 Flute Spiral Point Tap (Pack of 12) DWT
Best for general-purpose 1/4-20 work: HSS 2-flute spiral point design provides reliable chip ejection for through holes
HSS hand taps for cutting or re-threading threads in through holes and bottom-of-hole work. Useful for hand tapping and CNC tapping; uncoated substrate. One customer notes good functionality for redoing pistol grip threads
- high speed steel hand taps
- three start styles
- uncoated substrate
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2
12-24 HSS 2 Flute Spiral Point Tap (Pack of 12), DWT Series
Best for fine 12-24 threads: HSS 2-flute spiral point taps sold in multi-packs for routine workshop replacement needs
High speed steel hand taps for creating or repairing threads; versatile for hand or machine tapping. Users note good cutting performance on aluminum and functional threading, with some reports of breakage during use
- high speed steel hand taps
- pack of 12
- three tap styles available
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3
Best Value DWTGT6X1/2-13 pulley gun tap, 1/2-13 x 6
Best for larger 1/2-13 through-hole taps: long 6-inch flute length and spiral point geometry help clear chips in deep holes
Tap shoots chips ahead of cutting action to reduce loading and clogging. Suitable for through or blind holes and threading ductile materials like copper alloys and brass. One customer noted successful repair of worn lug nuts
- chip-breaking action
- through/blind hole compatibility
- ductile-material suitability