Fastening, Torque & Joint Assembly worked example

Threaded Insert Cost at 73% insert usage or scrap factor: a worked example

This worked example runs the threaded insert cost numbers for a tougher week than the baseline: 73% insert usage or scrap factor instead of the typical 102%. Estimate threaded-insert installation cost from insert count, insert or installed cost, usage factor, and fixed tooling or setup charges.

The inputs for this scenario

  • Threaded inserts installed: 48 inserts (held at the documented default)
  • Cost per installed insert: 0.72 $ / insert (held at the documented default)
  • Insert usage or scrap factor: 73 % (the input this scenario stresses; the baseline uses 102)
  • Fixed insert tooling or setup cost: 95 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable threaded insert cost = inserts installed × cost per installed insert × usage factor.
  • Total threaded insert cost works out to 120 $ at these inputs, and this is the headline figure for the scenario.
  • Average cost per insert works out to 2.5 $ / insert at these inputs.
  • Variable insert cost works out to 25.23 $ at these inputs.
  • Fixed insert tooling/setup cost works out to 95 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where insert usage or scrap factor sits at 102% and the headline result is 130 $, this scenario comes in 7.69% below the baseline at 120 $.
  • Use it when quoting or budgeting an insert installation operation, especially to test how batch size changes the per-insert cost. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Total threaded insert cost: 120 $ (headline result)
  • Average cost per insert: 2.5 $ / insert
  • Variable insert cost: 25.23 $
  • Fixed insert tooling/setup cost: 95 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Threaded Insert Cost calculator, set insert usage or scrap factor to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.