Fastener Manufacturing & Thread Rolling worked example

Tool Life Cost at 110% usable tool-life capture: a worked example in fastener manufacturing & thread rolling

Push usable tool-life capture up to 110% and the picture changes. This example computes every intermediate figure at that operating point. Use it when comparing heading dies, punches, thread rolling dies, trimming tools, pointers, or reconditioned tooling for a quote or production plan.

The inputs for this scenario

  • Planned fasteners using the tool: 80 pieces or 1k pieces (unchanged)
  • Tooling cost rate: 14 $ / unit (unchanged)
  • Usable tool-life capture: 110 % (raised for this scenario; the documented default is 100)
  • Setup, die change, or regrind cost: 180 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Tool life cost = planned fastener units × tooling cost rate × tool-life capture + fixed tooling cost) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,412 $ for total tooling cost consumed, the number this scenario is built around.
  • At this operating point the engine returns 17.65 $ / unit for tooling cost per entered unit.
  • At this operating point the engine returns 1,232 $ for variable tool wear cost.
  • At this operating point the engine returns 180 $ for fixed tooling cost.

How this compares with the baseline

  • Against the tool's baseline example, where usable tool-life capture sits at 100% and the headline result is 1,300 $, this scenario comes in 8.62% above the baseline at 1,412 $.
  • It computes total tooling cost as planned volume times the tooling cost rate times usable tool-life capture, plus fixed setup or regrind cost, then divides by volume for cost per unit. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Total tooling cost consumed: 1,412 $ (headline result)
  • Tooling cost per entered unit: 17.65 $ / unit
  • Variable tool wear cost: 1,232 $
  • Fixed tooling cost: 180 $

Run it with your numbers

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

Last reviewed 2026-05-12.