Kerngatboor Tabel — Gratis online tool
Voorboor maat voor elk draadtap
Vind de juiste boormaat voor elk draadtap. Metrisch en imperial. 75% en 50% schroefdraad ingreep. Gratis tabel.
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Tap drill size calculator
Find the correct drill bit for any tap. UNC, UNF, metric.
How to use this tool
- 1
Pick tap size
Select from standard UNC/UNF/metric.
- 2
Pick thread engagement %
75% standard; 50% for hard materials.
- 3
See drill size
Exact + closest standard bit.
Frequently Asked Questions
Why 75% thread engagement?
Standard engagement. Gives 95% of thread strength but 66% of the drilling effort vs 100%. Industry default for most jobs.
When to use 50%?
Hardened steels, stainless, or when breaking taps is a concern. Weaker threads but much easier tapping.
Belangrijkste punten
- Tap Drill Size Chart is a free, browser-based calculator tool — pilot hole size for any tap thread.
- Nee signup, no downloads, no file uploads. Tools run in your browser; the few that need an outside service say so on the page.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use Tap Drill Size Chart
- Open the tool: Launch Tap Drill Size Chart on Toololis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
Tap Drill Size Chart — Quick Facts
- Prijs
- Gratis — geen limieten, geen watermerk, geen paywall
- Privacy
- Wordt in je browser verwerkt. Tools die een externe dienst nodig hebben, vermelden dat op de pagina. Paginabezoeken worden geteld (Google Analytics).
- Platform
- Elke moderne browser — desktop, tablet of mobiel
- Categorie
- Rekenmachine Tools on Toololis
- Offline
- Works offline after first visit (Progressive Web App)
| Functie | Details |
|---|---|
| Tool | Tap Drill Size Chart |
| Categorie | Rekenmachine |
| Aanmelden vereist | Nee |
| Bestand uploaden | Geen — verwerkt in browser |
| Mobiel ondersteund | Volledig responsive |
| Kosten | Voor altijd gratis |
Why Use Tap Drill Size Chart?
You should try Tap Drill Size Chart for a quick, private way to pilot hole size for any tap thread. Processing happens in your browser and files are never uploaded; the few tools that need an outside service say so on the page.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.
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100% Privacy. Deze tool draait volledig in je browser. Je gegevens worden nooit naar een server geüpload.