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Tabla de Brocas para Machuelo — Herramienta online gratis

Tamaño de agujero piloto para cualquier rosca de machuelo

Encuentra la broca correcta para cualquier machuelo. Métrico e imperial. 75% y 50% de compromiso de rosca. Gratis y sin registro.

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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. 1

    Pick tap size

    Select from standard UNC/UNF/metric.

  2. 2

    Pick thread engagement %

    75% standard; 50% for hard materials.

  3. 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.

Puntos clave

  • Tap Drill Size Chart is a free, browser-based calculator tool — pilot hole size for any tap thread.
  • No signup, no downloads, no file uploads. Herramientas 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

  1. Open the tool: Launch Tap Drill Size Chart on Herramientaolis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Tap Drill Size Chart — Quick Facts

Precio
Gratis — sin límites, sin marcas de agua, sin paywall
Privacidad
Se procesa en tu navegador. Las herramientas que necesitan un servicio externo lo indican en la página. Se cuentan las visitas (Google Analytics).
Plataforma
Cualquier navegador moderno — escritorio, tablet o móvil
Categoría
Calculadora Herramientas on Herramientaolis
Sin conexión
Works offline after first visit (Progressive Web App)
CaracterísticaDetalles
HerramientaTap Drill Size Chart
CategoríaCalculadora
Requiere registroNo
Subida de archivoNinguno — procesado en el navegador
Compatible con móvilTotalmente adaptable
CosteGratis para siempre

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% Privacidad. Esta herramienta funciona enteramente en tu navegador. Tus datos nunca se suben a ningún servidor.