Fastener Manufacturing & Thread Rolling worked example

Cost Per Thousand Fasteners at 75% yield, scrap, or markup factor: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop yield, scrap, or markup factor to 75%, then walk the calculation through step by step. Build a cost-per-thousand fastener estimate from thousand-piece blocks, cost per thousand, yield factor, and fixed lot charges.

The inputs for this scenario

  • Order volume in 1,000-piece blocks: 50 1,000 pieces (held at the documented default)
  • Quoted price per 1,000 fasteners: 38 $ / 1,000 pieces (held at the documented default)
  • Yield, scrap, or markup factor: 75 % (the input this scenario stresses; the baseline uses 104)
  • Fixed lot charges (setup, tooling, freight): 275 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Lot cost = thousand-piece blocks × cost per thousand × factor + fixed lot charges.
  • Total lot cost from cost-per-thousand works out to 1,700 $ at these inputs, and this is the headline figure for the scenario.
  • Average cost per 1,000-piece block works out to 34 $ / 1,000 pieces at these inputs.
  • Variable CPM cost works out to 1,425 $ at these inputs.
  • Fixed lot charges works out to 275 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where yield, scrap, or markup factor sits at 104% and the headline result is 2,251 $, this scenario comes in 24.48% below the baseline at 1,700 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to yield, scrap, or markup factor, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. The single percentage factor lumps yield, scrap and markup together — separate them if you need to see true material loss versus added margin.

Results at a glance

  • Total lot cost from cost-per-thousand: 1,700 $ (headline result)
  • Average cost per 1,000-piece block: 34 $ / 1,000 pieces
  • Variable CPM cost: 1,425 $
  • Fixed lot charges: 275 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Cost Per Thousand Fasteners calculator, set yield, scrap, or markup factor to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.