What affects actual weight?
Thread form, reduced shanks, point style, chamfers, coatings and dimensional tolerances can change finished weight.
Engineering reference
Grade B7 stud bolt weights, simplified
Compare metric and imperial stud bolt weights, with or without two ASTM A194 Grade 2H heavy hex nuts. Use the calculator for quick theoretical estimates before confirming final shipping or procurement weight.
Select a reference
Stud bolt weight charts
Choose the unit system and whether the assembly includes two heavy hex nuts.
kg
Metric stud bolts
Approximate weights by metric diameter and length.
Open metric chart → lbImperial stud bolts
Approximate weights by inch diameter and length.
Open imperial chart → kgMetric bolt + 2 nuts
Assembly weights including two heavy hex nuts.
Open assembly chart → lbImperial bolt + 2 nuts
Inch-series assembly weights including two nuts.
Open assembly chart →
Quick estimator
Theoretical steel weight
Estimate the mass of a solid cylindrical stud using a steel density of 7,850 kg/m³. Thread geometry, chamfers, coatings and nuts are not included.
- Use nominal diameter and overall length.
- Result is suitable for preliminary planning only.
- Use the published charts for procurement values.
Include the complete assembly
For flange bolting, calculate the stud plus both Grade 2H heavy hex nuts and any specified washers.
Confirm before ordering
State diameter, length, thread, quantity, dimensional standard and finish when requesting a certified shipping weight.