How it is calculated
This is not a formal size table. A real countersunk screw can differ by tens of percent. Before buying fasteners, check the maker’s pack.
grams = 0,0035 × diameter² × length × pieces
Where the numbers come from
- Diameter — unit in the field: mm
- Length — unit in the field: mm
- Quantity — unit in the field: pcs
Example
100 screws of 3,5×35 mm weigh about 150 g.
Questions
Which diameter?
The outside size, across the thread, in millimetres. Length is in millimetres too.
Bolts and nails by the same formula?
No, they have their own pages and different factors.
Pieces in a kilogram?
Divide 1000 by the mass of one piece from the second line.