Fastener Manufacturing & Thread Rolling worked example

Wire Slug Weight with blank cross-section area of 0.12 in²: a worked example

This scenario runs the wire slug weight calculation on the strong side: blank cross-section area of 0.12 in², with every other input held at its documented default. Use it when estimating coil consumption, blank weight, material yield, or steel cost for a screw, bolt, rivet, stud, or pin order.

The inputs for this scenario

  • Blank cross-section area: 0.12 in² (raised for this scenario; the documented default is 0.05)
  • Cut-off blank length: 1.25 in (unchanged)
  • Material density: 0.28 lb / in³ (unchanged)
  • Blank count: 1,000 pieces (unchanged)

Working through the calculation

  • Applying the documented formula (Wire slug weight = blank area × cut-off blank length × material density × blank count) to the inputs above produces each figure below.
  • At this operating point the engine returns 42.45 lb for estimated wire slug weight, the number this scenario is built around.
  • At this operating point the engine returns 0.04 lb / piece for weight before count factor.
  • At this operating point the engine returns 1,000 x for blank count.
  • At this operating point the engine returns 0.15 in³ / piece for area × blank length.

How this compares with the baseline

  • Against the tool's baseline example, where blank cross-section area sits at 0.05 in² and the headline result is 17.37 lb, this scenario comes in 144% above the baseline at 42.45 lb.
  • Use it when estimating coil wire purchase quantity for a fastener lot, costing material per piece, or checking a supplier's stated wire usage. 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

  • Estimated wire slug weight: 42.45 lb (headline result)
  • Weight before count factor: 0.04 lb / piece
  • Blank count: 1,000 x
  • Area × blank length: 0.15 in³ / piece

Run it with your numbers

  • Every input above is editable in the live Wire Slug Weight calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.