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Tabela de Broca para Macho — Ferramenta online grátis

Tamanho de furo piloto para qualquer macho

Encontre a broca correta para qualquer macho de rosca. Métrico e imperial. Engajamento de rosca 75% e 50%. Sem cadastro.

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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.

Pontos-chave

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

Preço
Grátis — sem limites, sem marca d’água, sem paywall
Privacidade
Processado no seu navegador. Ferramentas que precisam de um serviço externo avisam isso na página. As visitas são contadas (Google Analytics).
Plataforma
Qualquer navegador moderno — desktop, tablet ou celular
Categoria
Calculadora Ferramentas on Ferramentaolis
Offline
Works offline after first visit (Progressive Web App)
RecursoDetalhes
FerramentaTap Drill Size Chart
CategoriaCalculadora
Cadastro necessárioNão
Upload de arquivoNenhum — processado no navegador
Suporte mobileTotalmente responsivo
CustoGrátis para sempre

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% Privacidade. Esta ferramenta funciona inteiramente no seu navegador. Seus dados nunca são enviados a nenhum servidor.