Tools
Engineering tools
Four calculators we use on the floor, published because a buyer checking a drill size or a flat length should not have to email for it. Every one runs in the browser — no sign-up, no data sent.
- ThreadsTap drill chartThread size in, correct tap drill size out — metric coarse and fine, UNC and UNF, plus the 75% engagement rule.Open →
- CostPart weight calculatorRound bar, plate, tube or hex in millimetres and a material, out in kilograms — the number that decides freight.Open →
- Sheet metalSheet metal bend allowanceBend allowance, bend deduction and the flat length, from thickness, inside radius, angle and K-factor.Open →
- ToleranceTolerance stack-upAdd up a chain of tolerances and get the worst-case and statistical result — the difference between a part that assembles and one that does not.Open →
Why publish these
Most quoting arguments are not arguments about price — they are arguments about a number: the drill size that was assumed, the flat length that was calculated with a different K-factor, the stack-up that was not added up. Putting the calculation on a page makes the number checkable before the drawing is sent.
Need the drawing reviewed instead? Request a Quote — DFM feedback and a tiered quote within 24 hours.