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Wood screws - nominal sizes vs. diameters.
Wood screws shank diameters and recommended pilot holes are indicated below.
Shank holes and pilot holes is recommended to prevent wood from splitting and allows tighter joints.
- Bolts, nuts and threaded rods - torque, tension and loads.
- Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.
- Convert between drill bit dimensions - gauge numbers, inches and mm.
- Hardwood and softwood drill speed chart.
- Sizing of hardwood lumber.
- Dimensions of metric threads according ISO 724.
- Metric steel bolts, screws and studs - proof and tensile strength.
- Allowable withdrawal load for nail and spikes.
- Metric versus Imperial equivalent screw dimensions.
- ANSI/ASME B1.1 Unified National Thread - UNC Coarse series and UNF Fine series.
- Machine screw diameters.
- Hard wood and soft wood pilot holes, shank clearance holes and countersink diameters.
- Weight supported by a double or triple wood headers.
- Allowable withdrawal load force.
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