Project fastener estimator
Choose the sector · enter the size · every line of the bill opens to its reasoning
Pick what you are building. The bill of quantities comes back by size, grade, finish and count — and every line opens to show where the number came from, what load it is carrying, why that grade, what length to order, and what changes if you choose a different grade. The drawing on the left shows the structure the numbers describe.
Access code required
The Project Fastener Estimator is available to approved clients and partners. Enter your access code below, or request one — approvals are usually same day. Build Your Bolt and Know Your Grade remain open to everyone.
Disclaimer. The Project Fastener Estimator produces a preliminary bill of quantities for tendering and budgeting from the inputs entered, using published standards, case studies and MF Fastener Industries’ own estimating conventions, each marked on the bill by its basis. It is not a design, a take-off from drawings, or engineering advice. Quantities, sizes, grades and finishes must be verified against the project drawings and specification by the engineer of record before purchase; MF supplies to the confirmed order, not to this estimate. MF Fastener Industries LLC accepts no liability for decisions, orders or works made in reliance on this estimate, and access to it does not create any contract or advisory relationship. Accuracy is stated to AACE International Recommended Practice 18R-97 and applies to the whole bill, not to any single line.
Published bases: hangar steel intensities from Nucor Flightstar, REIDsteel Bombardier Biggin Hill and American Airlines O'Hare case studies; OSHA 29 CFR 1926.755(a)(1) minimum four anchor rods per column; AACE 18R-97 accuracy classes; AASHTO M180 guardrail geometry (post spacing 1.905 m, panel 3.81 m, eight splice bolts per splice); ISO 898-1 stress areas and strengths; Directive 2006/42/EC coefficients where lifting applies. Fastener share of tonnage, bolts per tonne, size mixes, bolts per turbine flange, bolts per monopole base and per bollard are MF estimating conventions and are marked CONFIRM where a controlled standard or a manufacturer's drawing should replace them. Nothing on this page is a design value; the engineer of record's drawings take precedence and move the estimate from Class 4 to Class 3. Wind turbine counts per One Energy (1.5 MW: 120 anchor, 358 flange, 76 nacelle, 48 generator, 162 blade root, 48 rotor) and FARO (3 MW base flange, 144 holes); flange bolts M36–M48 class 10.9 HV sets per published research.