Q:

How do you view a drill bit chart online?

A:

Quick Answer

A drill bit size chart is available at EngineersEdge.com. This site hosts an ANSI size drill bit chart and an ISO metric size drill conversion to inches chart.

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Full Answer

Site visitors can also access a machinist drill hole tolerance chart for holes drilled with a drilling machine using appropriate jigs and fixtures. The chart includes standard tolerances for general machine work.

Drill hole features cannot be estimated perfectly due to variations in tool sharpness, accuracy, machine rigidity and material density. Most commercial twist drills have a slightly smaller diameter than the stated nominal size, and the actual drilled hole may be larger. The United States uses fraction and gauge drill bit sizes, whereas nearly all other countries use sizes in metric.

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