Machine design data
Mechanical Design References
Fastener, gear, drill, fit, surface finish, keyway, weld, and machining references for design work.
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9 references
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Bolt Dimensions and Sizes Imperial
Imperial bolt sizes, diameters, and thread reference.
Bolt Dimensions and Sizes Metric
Metric bolt sizes, diameters, and thread reference.
Drill Size Chart
Metric, fractional, letter, and number drill size chart.
Fractional Inches to Decimal Equivalent Chart
Fraction to decimal conversion chart for inch dimensions.
Gear Circular, Diametric and Module Pitch Conversion Table
Gear pitch conversion reference for module, diametral pitch, and circular pitch.
Shaft Tolerances and Fits ISO 286
ISO shaft tolerance and fit reference.
Standard Keyway Dimensions ISO
ISO keyway dimensions for shafts and hubs.
Surface Roughness Chart
Surface roughness values for machining and finishing processes.
Weld Symbols Reference Table
Common weld symbols and drawing reference.
About this category
Using Design References
Fastener, gear, drill, fit, surface finish, keyway, weld, and machining references for design work. These references are intended for quick checks, education, drafting, design review, and early engineering work. Always verify final values against applicable standards, supplier data, and project requirements.