VALICALC · LOOK UP. COMPARE. CALCULATE.
Your technical reference drawer.
15 interactive references for workshop dimensions and gear geometry. Search a designation, compare sizes and keep the source in view.
Search by tool, system, or quantity. Use ↑ ↓ and Enter to open a result.
Workshop & Fasteners
Metric Thread Pitch Chart
Find metric thread pitches by size. Compare coarse and fine variants, view verified tap-drill links and switch between millimetres and inches.
Open lookup →Workshop & Fasteners
UNC / UNF Thread Chart
Look up UNC and UNF sizes, threads per inch and metric pitch equivalents. Compare thread series and open the matching cutting-tap drill reference.
Open lookup →Workshop & Fasteners
Metric Tap Drill Chart
Find starting drill sizes for common metric cutting taps. See source recommendations, approximate diameter-minus-pitch values and drill equivalents.
Open lookup →Workshop & Fasteners
UNC / UNF Tap Drill Chart
Look up starting drills for UNC and UNF cutting taps. Compare numbered, fractional and metric drill dimensions with source-qualified recommendations.
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Pipe Thread Reference
Compare common pipe-thread designations, pitch, taper and reference dimensions. Keep nominal size separate from measured diameter and pipe bore.
Open lookup →Workshop & Fasteners
Clearance Hole Chart
Look up source-qualified bolt clearance holes by thread size and fit series. Compare available diameters in millimetres and inches.
Open lookup →Workshop & Fasteners
Drill Bit Size Chart
Compare metric, fractional, letter and numbered drill diameters. Find exact designations and nearby sizes without confusing nominal drill families.
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Bolt & Wrench Size Chart
Find wrench sizes for selected bolt head families. Compare metric and US dimensions while keeping ISO, DIN, JIS and head styles separate.
Open lookup →Workshop & Fasteners
Bolt Torque Reference
Explore bolt torque from an explicit preload and nut factor. Compare assumptions in N·m and ft·lbf without treating estimates as universal grade ratings.
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Key & Keyway Size Chart
Find selected manufacturer key sizes by shaft range. View verified keyway dimensions and range boundaries in metric and imperial units.
Open lookup →Workshop & Fasteners
Sheet Metal Gauge Chart
Look up sheet thickness by material and gauge system. Compare millimetres and inches without assuming one gauge number has a universal thickness.
Open lookup →Workshop & Fasteners
O-Ring Size Chart
Find selected O-ring sizes by designation, inside diameter and cross-section. Compare dimensions while keeping nominal labels separate from actual size.
Open lookup →Gears & Power Transmission
Gear Module Chart
Browse common gear-module examples and compare circular pitch, diametral pitch and derived dimensions. Open existing gear calculators for custom solves.
Open lookup →Gears & Power Transmission
Module ↔ Diametral Pitch Chart
Compare gear module and diametral pitch using reciprocal conversions. See exact values and the deviation from nearby common series choices.
Open lookup →Gears & Power Transmission
Spur Gear Dimensions Reference
Compare derived pitch, outside, root and base diameters for a declared unshifted spur-gear model. Browse module and tooth-count combinations.
Open lookup →A reference with a next step.
Every lookup shows its scope and source. Related calculators carry the chosen dimensions into your next engineering check.