Fastener Manufacturing & Thread Rolling worked example

Torque Test Capacity at 65% torque tester uptime: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop torque tester uptime to 65%, then walk the calculation through step by step. Estimate accepted fastener torque-test capacity from tests per cycle, planned cycles, tester uptime, and pass yield.

The inputs for this scenario

  • Torque tests per fixture cycle: 1 tests / cycle (held at the documented default)
  • Planned tester cycles: 180 cycles (held at the documented default)
  • Torque tester uptime: 65 % (the input this scenario stresses; the baseline uses 90)
  • Expected torque-test pass yield: 97 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross torque-test capacity = tests per cycle × planned tester cycles.
  • Good output capacity works out to 113 units at these inputs, and this is the headline figure for the scenario.
  • Gross torque-test capacity works out to 180 tests at these inputs.
  • Tester downtime loss works out to 63 tests at these inputs.
  • Failed or retest allowance works out to 3.51 tests at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where torque tester uptime sits at 90% and the headline result is 157 units, this scenario comes in 27.78% below the baseline at 113 units.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to torque tester uptime, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes uptime and yield are stable averages; a single fixture jam or a bad lot can swing actual output well away from the estimate.

Results at a glance

  • Good output capacity: 113 units (headline result)
  • Gross torque-test capacity: 180 tests
  • Tester downtime loss: 63 tests
  • Failed or retest allowance: 3.51 tests

Run it with your numbers

  • To rerun this with your own numbers, open the live Torque Test Capacity calculator, set torque tester uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.