h926h00 E06th 6305 PT 4-85 D~0/-2l -90~157 International Standard TSO 6305/4 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION+MEXAYHAPOAHAR OPTAHW3ALWA HO CTAHAAPTW3AUWM-ORGANISATION INTERNATIONALE DE NORMALISATION Railway components -- Technical delivery requirements Part 4 : Untreated steel nuts and bolts and high-strength nuts and bolts for fish-plates and fastenings Elements constitutifs de la voie ferree-Specifications techniques delivraison-Partie 4:Vis et écrous en acier non traite et visetécrousahauteresistancepouréclissesetattaches First edition -- 1985-11-01 UDC 625.143.4 Ref.No.1SO6305/4-1985(E) Descriptors : railway equipment, steel products, fishplates, bolts, nuts (fasteners), specifications, tests, marking. Price based on 8 pages 5926h00 E06T59h 6305 PT4-85 - Foreword Iso (the International Organization for Standardization)is a worldwide federation of 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- mental and non-governmental, in liaison with iso, also take part in the work. 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 6305/4 was prepared by Technical Committee ISO/TC 17, Steel. 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 latestedition,unlessotherwisestated. @ International Organization for Standardization, 1985 Printed in Switzerland 5 926h00 E0658h 6305 pT 4-85 INTERNATIONALSTANDARD ISO6305/4-1985(E) Railway components - Technical delivery requirements Part 4 : Untreated steel nuts and bolts and high-strength nuts and bolts for fish-plates and fastenings 1 Scope and field of application turer shall indicate in his offer the nature and main characteristics of the steelmaking process; he may not amend This part of Iso 6305 defines the specifications regarding prod- these without advising the purchaser's agent of this. uct quality and acceptance conditions for nuts and bolts made of untreated steel and high-strength nuts and bolts for fish- The bolts and nuts are of the property classes indicated in the plates and fastenings. table, defined by the values of the mechanical properties specified in ISO 898/1 and ISo 898/2. Table 2 References Iso 898/1, Mechanical properties of fasteners -- Part 1: Property classes Bolts, screws and studs. Bolts 4.6 5.6 6.8 8.8 10.9 Nuts 4/5 5 6 8 10 Iso898/2,Mechanicalpropertiesoffasteners-Part2:Nuts with specified proof load values. 3.2 Manufacture Iso 965/1,/so general purpose metric screw threads Tolerances - Part 1 : Principles and basic data. The bolts shall be made from one single piece without welding The heads of the bolts shall be produced by hot or cold upset- Iso 2859, Sampling procedures and tables for inspection by at- ting and the nuts shall be hot or cold shaped. In the case of tributes.1) heat-treated bolts and nuts, the treatment is left to the discre- tion of the manufacturer. However, if requested by the pur- iso4759/1,Tolerances for fasteners-Part 1:Bolts,screws chaser, the manufacturer shall indicate the heat treatment con- and nuts with thread diameters between 1,6 (inclusive)and ditions; he may not amend them without informing the pur- 150 mm (inclusive) and product grades A, B and C. chaser's agent of this. The manufacturing drawing provided by the purchaser shall 3Manufacturing conditions state the type of thread required for the boit and the nut. Throughout the manufacturing proce