ForewordScopeNormative referencesTerms, definitions and symbolsGeneral requirementsMaterialsWorkmanshipManufacturing tolerancesHeat treatmentProof loadingHook body geometryHook shank machiningNutHook suspensionStatic strengthGeneralVertical design loadHorizontal design forceBending moment of the shankGeneralBending moment due to horizontal forceBending moment due to eccentricity of vertical forceSpecial case for a ramshorn hookDesign bending moment of the shankHook body, design stressesLoadingsStress calculation methodsDesign stressesHook shank, design stressesHook, proof of static strengthGeneral for hook body and shankThe use of static limit design force for verification of the hook bodyFatigue strengthGeneralVertical fatigue design forceHorizontal fatigue design forceFatigue design bending moment of shankBending moment due to horizontal forceBending moment due to inclination of hook suspensionBending moment due to eccentricity of vertical forceProof of fatigue strength, hook bodyDesign stress calculationStress history in generalStress history based upon classified dutyLimit fatigue design stressExecution of the proofThe use of fatigue limit design force for verification of the hook bodyProof of fatigue strength, hook shankGeneralDesign stress calculationApplied stress cyclesBasic fatigue strength of materialStress concentration effects from geometryFatigue strength of notched shankMean stress influenceTransformation of stresses to a constant mean stressStress history parameter in generalStress history parameter based upon classified dutyExecution of the proofFatigue design of hook shanks for serially produced hooksVerification of conformity with the requirementsGeneralVerification of manufactureProof loadingNone destructive testing (NDT)Test samplingInformation for useMaintenance and inspectionMarkingSafe useSample sets of single point hooks (informative)A series of single point hooks of type RSN, dimensions of forgingsA series of single point hooks of type RF/RFN, dimensions of forgingsA series of single point hooks of type B, dimensions of forgingsSample set of ramshorn hooks (informative)Annexes A and B static limit design forces for hook bodies (informative)Static limit design forces of hook bodies for hook types RS/RSN and RF/RFN (see Table C.1.)Static limit design forces of hook bodies for a series of hooks of type B, with additional materials (see Table C.2)Annexes A and B fatigue limit design forces for hook bodies (informative)Fatigue limit design forces of hook bodies for hooks of type RS and RF (see Table D.1)Fatigue limit design forces of hook bodies for a series of hooks of type B, with additional materials (see Table D.2)Hook body calculation and specific spectrum ratio factors (normative)Conversion factor for hook body, kSpecific spectrum ratio factorsUnderlying spectra for the specific spectrum ratio factorsSample fatigue strength calculations of proofed hooks (with proof load applied) (informative)DataProof of competence in fatigue for hooks which have had proof load appliedStresses in the bowl of “Non-proofed” hook (no residual stress present):Stresses in the bowl of “proofed” hook (residual stress present)Proof load for the hookStresses in the section of “proofed” hook (residual stress present)Execution of proof for fatigue strengthLimit design stress, load history parameter and stress history parameterProof of competence for the fatigue strength of “non-proofed” hookProof of competence for the fatigue strength of "proofed" hookSample set of hook shank and thread designs (informative)A series of hook shank and thread designs, a knuckle threadA series of hook shank and thread designs, a metric threadA series of hook shank and thread designs, a modified metric threadHook shank and thread designs for hooks of type BBending of curved beams (normative)Basic equations for stressesApproximation of the reference moment of inertiaCalculation of hook suspension tilting resistance, articulation by a hinge or rope reeving system (normative)GeneralArticulation of hook by a hingeArticulation of a hook suspension by a balanced rope reevingGuidance for selection of hook size using Annexes C to E (informative)GeneralCase descriptionProof of static strengthProof of fatigue strengthFinal selection of hookInformation to be provided by the hook manufacturer (normative)Bibliography