Hex Bolt (Full Thread) Weight Calculator

Select a fastener type below to calculate accurate approximate weights across Metric and Imperial specifications for multiple industrial metals.

Hex Bolt (Full Thread) Parameters

Configure size, length, material and optional hex nuts

Material View Densities Table →

Diameter (mm)

Nominal Length (mm)

Nut Quantity (Per Fastener)

Select 0 for fastener weight only, or choose 1-4 nuts to include them in the total unit weight.

Total Quantity (Pcs)

Approx. Weight Calculation Summary M12 x 50mm

Approx. / Unit

~ 0.00

grams

Approx. / Unit (kg)

~ 0.0000

kg / pc

Approx. Total (kg)

~ 0.00

kilograms

Approx. Total (lbs)

~ 0.00

pounds

Head (Approx): ~ 0.0g

Body (Approx): ~ 0.0g

Nut(s) (Approx): ~ 0.0g

Theoretical approx values based on ISO/DIN standards. Physical weights may vary with manufacturing tolerances. Read full disclaimer.

Fastener Technical Sketch

Full Thread

Active Diameter: M12 (12.0 mm)

Active Length: 50.0 mm

Calculated Volume: ~ 0.00 cm³

Precision Thread Volume Formula

Theoretical weight is approximated using the effective pitch cylinder diameter: d₂ = (d - 0.6495 × P), giving accurate continuous 60° V-thread volume.

How the calculator works

The calculator converts all inputs into millimetres and determines net metal volume using analytical thread geometry before applying material density.

Weight ≈ Net Fastener Volume (cm³) × Material Density (g/cm³)

Full-thread shank volume is modeled precisely using the thread pitch line, where metal ridge volume and groove space are identical.

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