Fastening, Torque & Joint Assembly worked example

Fastening Rework Cost at 110% realized or chargeable rework factor: a worked example

This scenario runs the fastening rework cost calculation on the strong side: 110% realized or chargeable rework factor, with every other input held at its documented default. Use it when quantifying loose fasteners, stripped threads, cross-threading, wrong torque, missing washers, or torque-audit failures.

The inputs for this scenario

  • Reworked fastened joints or assemblies: 42 events (unchanged)
  • Cost per fastening rework event: 16 $ / event (unchanged)
  • Realized or chargeable rework factor: 110 % (raised for this scenario; the documented default is 100)
  • Fixed containment or setup cost: 350 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Variable fastening rework cost = reworked events × cost per event × realized factor) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,089 $ for total fastening rework cost, the number this scenario is built around.
  • At this operating point the engine returns 25.93 $ / event for average cost per rework event.
  • At this operating point the engine returns 739 $ for variable rework cost.
  • At this operating point the engine returns 350 $ for fixed containment/setup cost.

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 6.58% above the baseline at 1,089 $.
  • Use it during quality cost reviews, scrap-and-rework reporting, or when building a business case for error-proofing a fastening station. 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 fastening rework cost: 1,089 $ (headline result)
  • Average cost per rework event: 25.93 $ / event
  • Variable rework cost: 739 $
  • Fixed containment/setup cost: 350 $

Run it with your numbers

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

Last reviewed 2026-05-12.