DIN 440
Technical features and purpose of the DIN 440 standard The DIN 440 standard regulates the parameters of extra-large washers with an increased outer diameter, optimized for use in bolted connections of heavy-duty wooden structures. Using these washers allows for a significant reduction in specific pressure on soft materials under the bolt head or nut, preventing […]
DIN 525
Technical specifications and application of DIN 525 welding studs The DIN 525 standard defines the geometric parameters and technical requirements for threaded welding studs. The main quality criterion for this type of fastener is high weldability, ensuring a secure connection in critical assemblies. The load-bearing capacity of the finished connection depends not only on the […]
DIN 609
Technical description and scope of the DIN 609 standard The DIN 609 standard regulates the geometric parameters and technical requirements for high-strength hexagon head bolts equipped with a long threaded shank (fit bolt). These products are designed to ensure precision connections in mechanical engineering assemblies. The range of nominal metric thread diameters is from 8 […]
DIN 835
Technical specifications and application of DIN 835 studs The DIN 835 standard regulates the geometric parameters, tolerances, and technical delivery conditions for threaded studs of accuracy class A. The design of the product provides for a screw-in end with a thread length of approximately 2.0 d. This type of fastener is intended for forming reliable […]
DIN 938
Technical specifications and application area for DIN 938 studs This technical documentation regulates the requirements for the production of studs with a screwed-in end, having a thread length (bm) approximately equal to 1.0 d. These fasteners belong to product class A, which guarantees high manufacturing precision and strict tolerances. The standard applies to studs with […]
DIN 940
Technical specifications and application range of DIN 940 studs This technical regulation establishes requirements for the design of studs equipped with a standard metric thread, with an embedment end length of approximately 2.5 diameters (2.5d). The products belong to accuracy class “A”. The product range includes items with a standard thread pitch in the range […]
DIN 2509
Technical aspects and scope of the DIN 2509 standard This standard establishes regulatory requirements for the design, geometric parameters, and functional purpose of bolts and double-ended studs. These fasteners are designed to provide reliable detachable connections in critical components of machines and mechanisms. The design of studs with threads at both ends and an intermediate […]
DIN 3570
Technical features and scope of application for DIN 3570 clamps The DIN 3570 standard establishes strict requirements for the geometric parameters, design, and operational characteristics of U-bolts (clamp bolts) designed for the secure fixation of pipelines. The products are classified into two types: Form A (with two threaded ends) and Form B (with one threaded […]
DIN 7984
Technical features and application of DIN 7984 screws The DIN 7984 standard establishes strict technical requirements for screws with a reduced (low) cylindrical head, equipped with an internal hex socket. The range of nominal thread diameters covers sizes from M3 to M24, which allows this type of fastener to be used in a wide range […]
DIN 7990
Technical requirements and scope of DIN 7990 The DIN 7990 standard defines the regulatory requirements for design parameters and technical conditions for the implementation of hexagon head bolts intended for use in critical steel structures. The document covers the metric thread size range from M12 to M30, corresponding to product grade C accuracy. EV Group […]
DIN 7999
Important note: The DIN 2615 standard has been officially declared obsolete and fully replaced by the international regulation DIN EN 14399-8:2019-06. When designing metal structure assemblies, EV Group China specialists recommend using the current regulatory documentation. Technical specifications and field of application High-strength bolts complying with the DIN 7999 standard are equipped with a hexagon […]
DIN 9021
Technical specifications and application range of DIN 9021 washers The DIN 9021 standard regulates the production of flat washers with an increased outer diameter, belonging to accuracy classes A and C. A structural feature of this fastener is that the outer diameter of the product is approximately three times the nominal thread diameter of the […]
DIN 601
Important notice: the DIN 601 standard has been officially withdrawn and replaced by the current industry regulation DIN EN ISO 4016:2011-06. Technical features and scope of DIN 601 bolts Bolts complying with the DIN 601 specification are fasteners with a hexagonal head, equipped with an incomplete metric thread. The products are manufactured with a nominal […]
DIN 610
Attention: The DIN 610 standard has been officially withdrawn from active use. Technical description and scope of application The DIN 610 bolt is a high-precision fitted bolt with a hexagonal head, equipped with a short threaded shank. The product design features a metric thread with a standard pitch; however, EV Group China engineers can arrange […]
DIN 985
Attention: The DIN 985 standard is obsolete and has been replaced by the modern regulation DIN EN ISO 10511:2013-05. Technical specifications and scope of application This standard establishes strict technical requirements for low hexagon nuts with a self-locking non-metallic insert. The range of nominal thread diameters covers sizes from M3 to M48. The products are […]
DIN 6221
Technical regulations and scope of DIN 6921 bolts The DIN 6921 standard establishes strict requirements for the geometric parameters, mechanical properties, and manufacturing quality of hexagon flange bolts. These products belong to accuracy class A and are intended for use in critical threaded connections where high fastening reliability and uniform load distribution on the bearing […]
DIN 558
Important note: The DIN 558 standard has currently been officially withdrawn and replaced by the current DIN EN ISO 4018:2011-07 specification. When designing new structures and conducting procurement, it is recommended to use the updated ISO requirements. Technical description and field of application The hexagon head bolt, compliant with the DIN 558 standard, is a […]
DIN 939
Technical specifications and application range of DIN 939 studs DIN 939 is an international industrial standard governing the production of threaded studs with a screwing-in end (the length of the screwing-in part is 1.25d). Fasteners of this type are designed to create high-strength detachable connections in mechanical engineering, heavy industry, and metal structure assembly. EV […]
DIN 6922
Attention: The DIN 6922 standard is considered obsolete and has been officially replaced by the international standard EN 1665:1998-02. Technical specifications and scope of application Hexagon flange bolts with a transition shank, according to DIN 6922 specifications, are high-load fasteners. The items are produced with partial metric thread in a nominal diameter range from M5 […]
DIN 3502
Technical aspects of the DIN 3502 standard application The DIN 3502 standard regulates the requirements for the design and operation of shut-off valves used in modern water supply systems. The standard is closely correlated with the provisions of DIN EN 1213 and defines the design features of valve bodies equipped with a through-hole or functioning […]
DIN 30671
Important note: The DIN 30671 standard has been archived and officially replaced by the current regulatory documents DIN EN 10289:2004-08 and DIN EN 10290:2004-08. EV Group China specialists recommend using the current standards when designing new pipeline systems. Technical requirements and scope of DIN 30671 This standard, included in the DIN Handbook 143 collection, regulates […]
DIN 30670
Technical requirements and scope of polyethylene protection The DIN 30670 standard regulates the technical requirements for the application of three-layer extruded, as well as single-layer and multi-layer sintered polyethylene coatings designed for the anti-corrosion protection of steel pipes and fittings. Specialists at EV Group China emphasize that these coatings provide a high degree of insulation […]
DIN 30678
Specification and scope of application for polypropylene protective coatings according to DIN 30678 This technical regulation establishes industry standards for three-layer extruded, as well as single- and multi-layer sintered polypropylene coatings intended for the corrosion protection of steel pipeline systems and their components. In accordance with the requirements of DIN EN ISO 21809-1 (Table 1), […]
DIN 3840
Important note: The DIN 3840 standard has been officially withdrawn and replaced by the current regulatory document DIN EN 10516-2:2015-01. Technical regulation and scope of DIN 3840 This standard establishes an engineering methodology for calculating the strength characteristics of non-ribbed (smooth-walled) valve body elements made of metal alloys and operated under excess internal pressure. Experts […]
DIN 3352
The DIN 3352 standard has been officially withdrawn and replaced by the current regulation DIN EN 1171:2015-11. Overview of the DIN 3352 standard This set of standards describes the technical requirements for industrial gate valves used in piping systems for various purposes. EV Group China provides an expert analysis of the main provisions, classification, and […]
DIN 10289
Attention: The DIN 10289 standard has been officially withdrawn. Technical requirements of the DIN 10289 standard This specification regulates the mandatory parameters for anti-corrosion coatings based on liquid epoxy (EP) and epoxy-modified (EP-MOD) compounds designed for the protection of steel pipes and fittings. EV Group China experts emphasize that the use of these coatings is […]
DIN 59220
Technical requirements and scope of the DIN 59220 standard This specification regulates the geometric tolerances and limit deviations of form for hot-rolled sheet metal with a checkered or textured surface. The standard applies to products made from non-alloy, alloy, and corrosion-resistant (stainless) steel grades that comply with the requirements of DIN EN 10025–6.1. Rolled product […]
DIN 7527
Attention: The DIN 7527 standard has been officially withdrawn. Technical Regulation of the DIN 7527 Series This series of standards established requirements for geometry, machining allowances, and limit deviations for various types of steel forgings. EV Group China provides an expert overview of parameters for engineering design and quality control of metal products according to […]
DIN 2695
Technical regulation and scope of DIN 2695 This international standard defines design requirements, dimensional parameters, material selection, and designation nomenclature for specialized sealing elements. The scope of the document includes welded membrane seals designed for operation in a nominal pressure range from PN 63 to PN 400 (from Class 150 to Class 2500, respectively). Furthermore, […]
DIN 1015
Attention: the DIN 1015 standard has been officially withdrawn and replaced by the current industrial regulation DIN EN 10061:2004-02. Technical Regulation and Scope This regulatory document defines the technical requirements for hot-rolled hexagonal steel bars. The specification covers straight bars with a nominal “wrench size” from 13 to 103 mm. Products supplied by EV Group […]
DIN 1018
Attention: The DIN 1018 standard has been officially withdrawn. Technical Aspects and Scope of DIN 1018 This regulatory document specifies the geometric parameters and tolerances for hot-rolled steel profiles with round and flat-round cross-sections. According to EV Group China specifications, the standard covers: Round profile: cross-section width range from 16 to 75 mm. Flat-round profile: […]
DIN 2696
Technical aspects of the DIN 2696 standard application This regulatory document specifies the design and performance characteristics of flange connections equipped with sealing lenses. This type of execution is critical for ensuring tightness in high-pressure piping systems (above 63 bar), where traditional gasket solutions may prove insufficiently effective. The standard establishes strict requirements for the […]
DIN 6918
Attention: The DIN 6918 standard has been officially withdrawn (cancelled). This regulatory documentation governed the technical parameters of square wedge washers designed for high-strength HV bolted connections used in the assembly of U-shaped steel profiles. The technical requirements complied with standards relevant to steel structures with control notches. Scope of DIN 6918 Square tapered washers […]
DIN 17350
Technical delivery conditions according to DIN 17350 The DIN 17350 standard regulated a complex set of requirements for the quality, chemical composition, and mechanical properties of tool steels. Today, this standard has been officially withdrawn and replaced by the updated international standard EN ISO 4957. Experts at EV Group China emphasize that the transition to […]
DIN 7980
The DIN 7980 standard, which regulates the production of square-section spring washers, has been officially withdrawn from active use. Nevertheless, components manufactured according to this regulation continue to be used in legacy engineering assemblies. Technical Purpose and Scope of Application According to DIN 7980 specifications, these spring elements are intended for securing threaded connections that […]
DIN 444
Scope of application for DIN 444 eye bolts This regulatory document specifies the technical parameters for eye bolts with metric threads in the nominal diameter range from M5 to M39. The standard covers requirements for fasteners of accuracy classes A, B, and C, ensuring the ability to select the optimal solution for engineering tasks with […]
DIN 6921
Important note: The DIN 6921 standard is officially considered obsolete and has been completely replaced by the international regulation DIN EN 1665:1998-11. When designing new assemblies and creating specifications, it is recommended to use the current version of the regulatory document. Technical description and scope This standard regulates the geometric parameters and technical requirements for […]
DIN 971-1
Please note: the DIN 971-1 standard is considered obsolete and has been replaced by DIN EN ISO 8673:2013-04. Technical regulations and scope of application Hexagon nuts type 1, supplied by EV Group China, are designed with height requirements sufficient for strength classes 6 and 8. To ensure operational reliability under higher loads (strength classes 10 […]
DIN 6319
Purpose and technical role of DIN 6319 washers The DIN 6319 standard defines the geometric characteristics, materials, and design of spherical and conical washers. These fasteners are designed to compensate for axial misalignment and distribute clamping forces in assemblies where mating surfaces are not parallel. The combined use of a spherical and a conical washer […]
DIN 28403
Technical features of the DIN 28403 standard The DIN 28403 standard regulates the design parameters and operational characteristics of small flange connections designed for vacuum systems. This equipment is optimized for operation in both high and low vacuum conditions, ensuring tightness and reliability at pressure differentials of up to 1.5 bar. The quick-release architecture of […]