Fastening, Torque & Joint Assembly worked example

Threaded Insert Cost at 117% insert usage or scrap factor: a worked example

This scenario runs the threaded insert cost calculation on the strong side: 117% insert usage or scrap factor, with every other input held at its documented default. Use it when costing heat-set inserts, press-fit inserts, helical inserts, rivet nuts, weld nuts, or molded-in threaded features.

The inputs for this scenario

  • Threaded inserts installed: 48 inserts (unchanged)
  • Cost per installed insert: 0.72 $ / insert (unchanged)
  • Insert usage or scrap factor: 117 % (raised for this scenario; the documented default is 102)
  • Fixed insert tooling or setup cost: 95 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Variable threaded insert cost = inserts installed × cost per installed insert × usage factor) to the inputs above produces each figure below.
  • At this operating point the engine returns 136 $ for total threaded insert cost, the number this scenario is built around.
  • At this operating point the engine returns 2.82 $ / insert for average cost per insert.
  • At this operating point the engine returns 40.54 $ for variable insert cost.
  • At this operating point the engine returns 95 $ for fixed insert tooling/setup cost.

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 4.06% above the baseline at 136 $.
  • Use it when quoting or budgeting an insert installation operation, especially to test how batch size changes the per-insert cost. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Total threaded insert cost: 136 $ (headline result)
  • Average cost per insert: 2.82 $ / insert
  • Variable insert cost: 40.54 $
  • Fixed insert tooling/setup cost: 95 $

Run it with your numbers

  • Every input above is editable in the live Threaded Insert Cost calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.