Fastening, Torque & Joint Assembly worked example

Fastening Rework Cost at 72% realized or chargeable rework factor: a worked example

Suppose realized or chargeable rework factor falls to 72%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate fastening rework cost from reworked joints, cost per rework event, realized factor, and fixed containment or setup cost.

The inputs for this scenario

  • Reworked fastened joints or assemblies: 42 events (held at the documented default)
  • Cost per fastening rework event: 16 $ / event (held at the documented default)
  • Realized or chargeable rework factor: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed containment or setup cost: 350 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable fastening rework cost = reworked events × cost per event × realized factor.
  • Total fastening rework cost works out to 834 $ at these inputs, and this is the headline figure for the scenario.
  • Average cost per rework event works out to 19.85 $ / event at these inputs.
  • Variable rework cost works out to 484 $ at these inputs.
  • Fixed containment/setup cost works out to 350 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where realized or chargeable rework factor sits at 100% and the headline result is 1,022 $, this scenario comes in 18.41% below the baseline at 834 $.
  • It computes the total dollar cost of fastening rework by multiplying reworked events by cost per event and a realized factor, then adding fixed containment or setup cost. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Total fastening rework cost: 834 $ (headline result)
  • Average cost per rework event: 19.85 $ / event
  • Variable rework cost: 484 $
  • Fixed containment/setup cost: 350 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Fastening Rework Cost calculator, set realized or chargeable rework factor to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.