Static demand, not a guessed rating table
Eyebolt Static Demand Check — ISO 3266 Scope
Resolve ideal static force for one axial eyebolt or a symmetric pair, then compare it with the WLL certified for the exact product and configuration. This page does not derive an ISO 3266 capacity.
Static check
Publicly verifiable ISO scope
The official ISO catalogue record lists ISO 3266:2010, edition 2, as Published and identifies Amendment 1:2015. Its public abstract covers one-piece forged steel eyebolts grade 4 for general lifting, axial and inclined loading, and a service-temperature range from −20 °C to 200 °C. It excludes non-one-piece-forged eyebolts and grade 4 eyebolts manufactured before publication.
Static force model
For one exactly axial eyebolt, line force is T = F. For two identical symmetric legs at angle θ from vertical, vertical equilibrium gives 2T cos θ = F, so T = F / (2 cos θ). NASA’s official vector-components reference documents the cosine resolution of a force vector.
NEEDS_LICENSED_SOURCE: the former page attributed a 1.4 pair multiplier, a 45° permission boundary, MBL = 4 × WLL, marking requirements and nominal-size presets to ISO 3266. The open ISO record does not expose the clauses/tables needed to verify those exact normative values, including the effect of Amd 1:2015. They have therefore been removed, not reconstructed from memory.
A result at or below 100% means only that the ideal static line force does not exceed the WLL supplied by the user for that exact configuration. A competent lifting-equipment person must verify the controlled standard, amendment, product certificate, manufacturer instructions, installation and lift plan.
