(ISO 6043 nternational Standard Shipbuilding and marine structures - Eye and fork assemblies under tension load - Main dimensions Construction navale et structures maritimes -- Assemblages ceil et chape soumis a un effort de traction -- Dimensions principales. First edition - 1985-12-15 UDC 621.885.9 : 629.12 Ref. No. 1ISO 6043-1985 (E) 6043-1985 Descriptors : shipbuilding, lifting equipment, joints, clevises, pins (mechanics), dimensions, materials, designation. Foreword IsO(theInternationalOrganizationforStandardization)isaworldwidefederationof national standards bodies (iso member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 6043 was prepared by Technical Committee ISO/TC 8, Shipbuilding and marine structures. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition, unless otherwise stated. @ International Organization for Standardization, 1985 Printed in Switzerland ISO 6043-1985 (E) INTERNATIONAL STANDARD Shipbuilding and marine structures Eye and fork assemblies under tension load - Main dimensions 4 Nominal size Scope and field of application 1 The nominal size designation of an eye and fork assembly is 1.1 This International Standard lays down the main dimen a numerical value without unit for reference purposes; it is sions for interchangeability and the materials for eyes, forks derivedfromthepermissible loadinkilonewtons. and associated bolts or pins for components subject to tension load. 5 Dimensions and tolerances 1.2 Eyes, forks and bolts or pins with dimensions according to this International Standard are primarily intended for use on 5.1Maindimensions the components of ships' cargo handling appliances which are subject to tension loads only (for instance, round hole The dimension of eye and fork assemblies shall be in accord- eyeplates, sheave block head fittings, block holders, trunnion ance with the figure and the table. pieces for span bearing, turnbuckles). NOTE -- The type of bolt or pin to be used and its securing are left to national regulations. 1.3 This International Standard is not applicable to com- ponents subject to compressive thrust or torsional loads (for Tolerances 5.2 instance fork-type derrick heel fittings which connect with gooseneck pins). Dimensional tolerances shall correspond to the standard tolerance grade IT 14 given in IS0 286. 2 References Material ISo 286, /SO system of limits and fits. 1) 6.1 Eyes and forks ISo 630, Structural steels. Eyes and forks shall be made of steel to IS0 630, grade Fe 360 IS0/R 683/1, Heat-treated steels, alloy steels and free-cutting (as minimum quality). steels -- Part 1: Quenched and tempered unalloyed steels. 6.2 Bolts or pins ISo 8147, Shipbuilding and marine structures - Derrick rigs and component parts - Vocabulary.2) Bolts or pins shall be made of steel to ISO 630, grade Fe 430 (as minimum quality). 6.3 Higher quality Definitions For the purposes of this International Standard, the definitions If the use of heat-treated quenched steel is required, then the given in ISo 8147 apply. material shall comply with isO/R 683/1. At present at the stage of draft. (Revision of ISO/R 286-1962.) Atpresentatthestageofdraft.