ISO INTERNATIONAL STANDARD 7048 Second edition 2011-04-01 Cross-recessed cheese head screws Vis a métaux a tete cylindrique a empreinte cruciforme Reference number ISO 7048:2011(E) SO @ ISO 2011 ISO 7048:2011(E) 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 non-governmental, in liaison with isO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEc Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 7048 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 10, Product standards forfasteners. This second edition cancels and replaces the first edition (IsO 7048:1998), of which it constitutes a minor revision. ii ISO 7048:2011(E) INTERNATIONAL STANDARD Cross-recessed cheese head screws Scope This International Standard specifies the characteristics of cross-recessed cheese head screws of product grade A, with threads from M2,5 to M8 inclusive, and with cross recesses of types H and Z. NOTE The head dimensions of these screws are identical to those of the slotted cheese head screws in IsO 1207. If, in special cases, specifications others than those listed in this International Standard are required, they can be selected from existing International Standards, for example ISO 261, ISO 888, ISO 898-1, ISO 965-2, ISO 3506-1 and ISO 4759-1. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Iso 225, Fasteners - Bolts, screws, studs and nuts - Symbols and descriptions of dimensions IsO 261, /SO general purpose metric screw threads - General plan IsO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs with specified property classes Coarse thread and fine pitch thread IsO 965-2, /sO general purpose metric screw threads - Tolerances- Part 2: Limits of sizes for general purpose external and internal screw threads -Medium quality IsO 3269, Fasteners — Acceptance inspection Iso 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners - Part 1: Bolts, screws and IsO 4042, Fasteners — Electroplated coatings IsO 4757, Cross recesses for screws IsO 4759-1, Tolerances for fasteners — Part 1: Bolts, screws, studs and nuts - Product grades A, B and C IsO 6157-1, Fasteners — Surface discontinuities Part 1: Bolts, screws and studs for general requirements Iso 8839, Mechanical properties of fasteners — Bolts, screws, studs and nuts made of non-ferrous metals IsO 8992, Fasteners - General requirements for bolts, screws, studs and nuts IsO 10683, Fasteners - Non-electrolytically applied zinc flake coatings 1