{"id":261695,"date":"2024-10-19T17:20:33","date_gmt":"2024-10-19T17:20:33","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-3506-22020-tc\/"},"modified":"2024-10-25T13:08:02","modified_gmt":"2024-10-25T13:08:02","slug":"bs-en-iso-3506-22020-tc","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-3506-22020-tc\/","title":{"rendered":"BS EN ISO 3506-2:2020 – TC"},"content":{"rendered":"

This document specifies the mechanical and physical properties of nuts, with coarse pitch thread and fine pitch thread, made of corrosion-resistant stainless steels, when tested at the ambient temperature range of 10 \u00b0C to 35 \u00b0C. It specifies property classes in relation to austenitic, martensitic, ferritic and duplex (austenitic-ferritic) steel grades for nuts.<\/p>\n

ISO 3506-6<\/span><\/span> provides general rules and additional technical information on suitable stainless steels and their properties.<\/p>\n

Nuts conforming to the requirements of this document are evaluated at the ambient temperature specified in paragraph 1. It is possible that they do not retain the specified mechanical and physical properties at elevated and\/or lower temperatures.<\/p>\n

\n
\n NOTE 1\n <\/div>\n

Fasteners conforming to the requirements of this document are used without restriction in applications ranging from \u201320 \u00b0C to +150 \u00b0C; however, fasteners conforming to this document are also used for applications outside this range down to \u2013196 \u00b0C and up to +300 \u00b0C. For more details, see ISO 3506-6<\/span><\/span> .<\/p>\n<\/div>\n

Outside the temperature range of \u201320 \u00b0C to +150 \u00b0C, it is the responsibility of the user to determine the appropriate choice for a given application, in consultation with an experienced fastener metallurgist and by taking into account e.g. stainless steel composition, duration of exposure at elevated or low temperature, the effect of the temperature on the fastener mechanical properties and clamped parts, and the corrosive service environment of the bolted joint.<\/p>\n

\n
\n NOTE 2\n <\/div>\n

ISO 3506-5<\/span><\/span> 3<\/sup><\/span><\/p>\n

\n
\n 3<\/sup>\n <\/div>\n

Under preparation.<\/p>\n<\/p><\/div>\n

is developed in order to assist in the selection of appropriate stainless steel grades and property classes intended for use at temperatures up to +800 \u00b0C.\n<\/p><\/div>\n

This document applies to nuts:<\/p>\n

    \n
  • \n

    with ISO metric thread in accordance with ISO 68-1<\/span><\/span> ,<\/p>\n<\/li>\n

  • \n

    with diameter\/pitch combinations in accordance with ISO 261<\/span><\/span> and ISO 262<\/span><\/span> ,<\/p>\n<\/li>\n

  • \n

    with coarse pitch thread M5 to M39, and fine pitch thread M8\u00d71 to M39\u00d73,<\/p>\n<\/li>\n

  • \n

    with thread tolerances in accordance with ISO 965-1<\/span><\/span> and ISO 965-2<\/span><\/span> ,<\/p>\n<\/li>\n

  • \n

    with specified property classes, including proof load,<\/p>\n<\/li>\n

  • \n

    with different nut styles: thin nuts, regular nuts and high nuts,<\/p>\n<\/li>\n

  • \n

    with a minimum nut height m<\/i> ? 0,45 D<\/i>,<\/p>\n<\/li>\n

  • \n

    with a minimum outside diameter or width across flats s<\/i> ? 1,45 D<\/i> (see Annex A<\/span>),<\/p>\n<\/li>\n

  • \n

    of any shape, and<\/p>\n<\/li>\n

  • \n

    able to mate with bolts, screws and studs with property classes in accordance with ISO 3506-1<\/span><\/span> .<\/p>\n<\/li>\n<\/ul>\n

    Stainless steel grades and property classes can be used for sizes outside the diameter limits of this document (i.e. for D<\/i> < 5 mm or D<\/i> > 39 mm), provided that all applicable chemical, mechanical and physical requirements are met.<\/p>\n

    This document does not specify requirements for functional properties such as:<\/p>\n

      \n
    • \n

      torque\/clamp force properties,<\/p>\n<\/li>\n

    • \n

      prevailing torque properties, or<\/p>\n<\/li>\n

    • \n

      weldability.<\/p>\n<\/li>\n<\/ul>\n

      PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
      1<\/td>\ncompares BS EN ISO 3506-2:2020 <\/td>\n<\/tr>\n
      2<\/td>\nTRACKED CHANGES
      Text example 1 \u2014 indicates added text (in green) <\/td>\n<\/tr>\n
      3<\/td>\nNational foreword
      Compliance with a British Standard cannot confer immunity from legal obligations.
      Amendments\/corrigenda issued since publication <\/td>\n<\/tr>\n
      8<\/td>\nForeword <\/td>\n<\/tr>\n
      10<\/td>\nIntroduction <\/td>\n<\/tr>\n
      11<\/td>\nFasteners \u2014 Mechanical properties of corrosion-resistant stainless steel fasteners \u2014
      Part 2:
      1 Scope <\/td>\n<\/tr>\n
      13<\/td>\n2 Normative references <\/td>\n<\/tr>\n
      14<\/td>\n3 Terms and definitions
      3.1
      3.2
      3.3
      3.4
      3.5
      34 Symbols <\/td>\n<\/tr>\n
      15<\/td>\n45 Designation, marking and finish systems
      4.1 Designation <\/td>\n<\/tr>\n
      16<\/td>\nFigure 1 \u2014 Designation system for stainless steel grades and property classes for nuts
      4.2 Marking
      4.2.2 Manufacturer’s identification mark <\/td>\n<\/tr>\n
      17<\/td>\n4.2.3 Nuts
      Figure 2 \u2014 Marking with material designation and manufacturer’s identification mark <\/td>\n<\/tr>\n
      18<\/td>\n4.2.4 Packages
      4.3 Finish
      5.1 Designation of nut styles
      5.2 Designation system for stainless steel grades and property classes
      5.2.1 General <\/td>\n<\/tr>\n
      19<\/td>\nFigure 1 \u2014 Designation system for stainless steel grades and property classes for nuts
      5.2.2 Designation of stainless steel grades (first block) <\/td>\n<\/tr>\n
      20<\/td>\n5.2.3 Designation of property classes (second block) for regular nuts (style 1) and high nuts
      5.2.4 Designation of property classes (second block) for thin nuts (style 0)
      5 Chemical composition <\/td>\n<\/tr>\n
      21<\/td>\nTable 1 \u2014 Stainless steel grades \u2014 Chemical composition
      6 Design of bolt and nut assemblies
      Table 1 \u2014 Property class combination of nuts to bolts, screws and studs <\/td>\n<\/tr>\n
      22<\/td>\n6 Mechanical properties
      Table 2 \u2014 Mechanical properties for nuts \u2014 Austenitic steel grades <\/td>\n<\/tr>\n
      23<\/td>\n7 Materials
      7.1 Chemical composition <\/td>\n<\/tr>\n
      24<\/td>\nTable 2 \u2014 Stainless steel grades \u2014 Chemical composition
      7.2 Heat treatment for martensitic stainless steel nuts <\/td>\n<\/tr>\n
      25<\/td>\n7.3 Finish
      7.4 Corrosion resistance
      8 Mechanical and physical properties <\/td>\n<\/tr>\n
      26<\/td>\nTable 3 \u2014 Mechanical properties for nuts \u2014 Austenitic and duplex grades
      Table 4 \u2014 Mechanical properties for nuts \u2014 Martensitic and ferritic grades <\/td>\n<\/tr>\n
      27<\/td>\nTable 5 \u2014 Proof load values for regular and high nuts with coarse pitch thread (full loadability)
      Table 6 \u2014 Proof load values for regular and high nuts with fine pitch thread (full loadability) <\/td>\n<\/tr>\n
      28<\/td>\nTable 7 \u2014 Proof load values for thin nuts with coarse pitch thread (reduced loadability)
      Table 8 \u2014 Proof load values for thin nuts with fine pitch thread (reduced loadability) <\/td>\n<\/tr>\n
      29<\/td>\n9 Inspection
      9.1 Manufacturer\u2019s inspection
      9.2 Supplier\u2019s inspection
      9.3 Purchaser\u2019s inspection
      9.4 Delivery of test results
      710 Test methods
      7.1 Hardness HB, HRC or HV
      7.2 Proof load <\/td>\n<\/tr>\n
      30<\/td>\n10.1 Proof load test
      10.1.1 General
      10.1.2 Applicability
      10.1.3 Apparatus
      10.1.4 Testing device <\/td>\n<\/tr>\n
      31<\/td>\nFigure 2 \u2014 Axial tensile test
      Figure 3 \u2014 Axial compressive test <\/td>\n<\/tr>\n
      32<\/td>\n10.1.5 Test procedure
      10.1.6 Addition to test procedure for prevailing torque nuts
      10.1.7 Test results and requirements <\/td>\n<\/tr>\n
      33<\/td>\n10.2 Hardness test
      10.2.1 General
      10.2.2 Test procedure
      Hardness determined on a surface
      Hardness determined on a longitudinal section (core hardness)
      Figure 4 \u2014 Location of hardness readings (longitudinal section) <\/td>\n<\/tr>\n
      34<\/td>\n10.2.3 Test results and requirements
      11 Nut marking and labelling
      11.1 Nut marking
      11.1.1 General requirements for marking
      11.1.2 Marking of property class for nuts with full loadability (regular and high nuts)
      Table 10 \u2014 Property class marking symbol for nuts with full loadability (regular and high nuts)
      11.1.3 Marking of property class for nuts with reduced loadability (thin nuts) <\/td>\n<\/tr>\n
      35<\/td>\nTable 11 \u2014 Property class marking symbol for nuts with reduced loadability (thin nuts)
      11.1.4 Additional marking
      11.2 Manufacturer\u2019s identification mark
      11.3 Marking on the nuts
      11.3.1 Hexagon nuts <\/td>\n<\/tr>\n
      36<\/td>\nFigure 5 \u2014 Examples of marking for hexagon nuts with full loadability
      Figure 6 \u2014 Examples of marking for hexagon nuts with reduced loadability <\/td>\n<\/tr>\n
      37<\/td>\nFigure 7 \u2014 Alternative groove marking (for grades A2 and A4 only)
      11.3.2 Other types of nuts
      11.3.3 Left-hand thread marking
      Figure 8 \u2014 Example of marking for left-hand thread
      11.4 Marking of the packages (labelling) <\/td>\n<\/tr>\n
      38<\/td>\n(informative)
      A.1 General
      A.2 Steel group A (austenitic structure)
      A.2.1 General
      A.2.2 Steel grade A1 <\/td>\n<\/tr>\n
      39<\/td>\nA.2.3 Steel grade A2
      A.2.4 Steel grade A3
      A.2.5 Steel grade A4
      A.2.6 Steel grade A5
      A.3 Steel group F (ferritic structure)
      A.3.1 General
      A.3.2 Steel grade F1
      A.4 Steel group C (martensitic structure)
      A.4.1 General
      A.4.2 Steel grade C1
      A.4.3 Steel grade C3 <\/td>\n<\/tr>\n
      40<\/td>\nA.4.4 Steel grade C4
      A.5 Steel group FA (ferritic-austenitic structure)
      Table A.1 \u2014 Examples of compositions of steels with ferritic-austenitic structure <\/td>\n<\/tr>\n
      41<\/td>\n(informative) <\/td>\n<\/tr>\n
      42<\/td>\nTable A.1 \u2014 Minimum height of hexagon nuts
      A.2 Nuts with diameters D 39 mm <\/td>\n<\/tr>\n
      43<\/td>\nAnnex B
      (informative) <\/td>\n<\/tr>\n
      44<\/td>\nTable B.1 \u2014 Stainless steel composition specifications <\/td>\n<\/tr>\n
      46<\/td>\nAnnex B
      (normative)
      Table B.1 \u2014 Thread dimensions of the test mandrel \u2013 Coarse pitch thread <\/td>\n<\/tr>\n
      47<\/td>\nTable B.2 \u2014 Thread dimensions of the test mandrel \u2014 Fine pitch thread <\/td>\n<\/tr>\n
      48<\/td>\nAnnex C
      (informative) <\/td>\n<\/tr>\n
      49<\/td>\nTable C.1 \u2014 Stainless steels for cold heading and extruding <\/td>\n<\/tr>\n
      50<\/td>\nAnnex D
      (informative)
      Table D.1 \u2014 Austenitic stainless steels with particular resistance to chloride induced stress corrosion <\/td>\n<\/tr>\n
      51<\/td>\nTable E.1 \u2014 Influence of temperature on ReL and Rp0,2
      Table E.2 \u2014 Application of stainless steel bolts, screws and studs at low temperatures <\/td>\n<\/tr>\n
      52<\/td>\nAnnex F
      (informative)
      Figure F.1 \u2014 Time-temperature diagram of intergranular corrosion in austenitic stainless steels, grade A2 <\/td>\n<\/tr>\n
      53<\/td>\nAnnex G
      (informative) <\/td>\n<\/tr>\n
      54<\/td>\nBibliography <\/td>\n<\/tr>\n
      56<\/td>\nundefined <\/td>\n<\/tr>\n
      58<\/td>\nEuropean foreword
      Endorsement notice <\/td>\n<\/tr>\n
      61<\/td>\nForeword <\/td>\n<\/tr>\n
      63<\/td>\nIntroduction <\/td>\n<\/tr>\n
      65<\/td>\n1 Scope <\/td>\n<\/tr>\n
      66<\/td>\n2 Normative references
      3 Terms and definitions <\/td>\n<\/tr>\n
      67<\/td>\n4 Symbols <\/td>\n<\/tr>\n
      68<\/td>\n5 Designation systems
      5.1 Designation of nut styles
      5.2 Designation system for stainless steel grades and property classes
      5.2.1 General <\/td>\n<\/tr>\n
      69<\/td>\n5.2.2 Designation of stainless steel grades (first block) <\/td>\n<\/tr>\n
      70<\/td>\n5.2.3 Designation of property classes (second block) for regular nuts (style 1) and high nuts (style 2)
      5.2.4 Designation of property classes (second block) for thin nuts (style 0)
      6 Design of bolt and nut assemblies <\/td>\n<\/tr>\n
      71<\/td>\n7 Materials
      7.1 Chemical composition <\/td>\n<\/tr>\n
      72<\/td>\n7.2 Heat treatment for martensitic stainless steel nuts <\/td>\n<\/tr>\n
      73<\/td>\n7.3 Finish
      7.4 Corrosion resistance
      8 Mechanical and physical properties <\/td>\n<\/tr>\n
      78<\/td>\n9 Inspection
      9.1 Manufacturer\u2019s inspection
      9.2 Supplier\u2019s inspection <\/td>\n<\/tr>\n
      79<\/td>\n9.3 Purchaser\u2019s inspection
      9.4 Delivery of test results
      10 Test methods
      10.1 Proof load test
      10.1.1 General
      10.1.2 Applicability
      10.1.3 Apparatus
      10.1.4 Testing device <\/td>\n<\/tr>\n
      81<\/td>\n10.1.5 Test procedure
      10.1.6 Addition to test procedure for prevailing torque nuts
      10.1.7 Test results and requirements <\/td>\n<\/tr>\n
      82<\/td>\n10.2 Hardness test
      10.2.1 General
      10.2.2 Test procedure <\/td>\n<\/tr>\n
      83<\/td>\n10.2.3 Test results and requirements
      11 Nut marking and labelling
      11.1 Nut marking
      11.1.1 General requirements for marking
      11.1.2 Marking of property class for nuts with full loadability (regular and high nuts) <\/td>\n<\/tr>\n
      84<\/td>\n11.1.3 Marking of property class for nuts with reduced loadability (thin nuts)
      11.1.4 Additional marking
      11.2 Manufacturer\u2019s identification mark
      11.3 Marking on the nuts
      11.3.1 Hexagon nuts <\/td>\n<\/tr>\n
      86<\/td>\n11.3.2 Other types of nuts
      11.3.3 Left-hand thread marking
      11.4 Marking of the packages (labelling) <\/td>\n<\/tr>\n
      87<\/td>\nAnnex A (informative) Design principles of stainless steel nuts <\/td>\n<\/tr>\n
      89<\/td>\nAnnex B (normative) Thread dimensions of the test mandrel for proof load <\/td>\n<\/tr>\n
      91<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

      Tracked Changes. Fasteners. Mechanical properties of corrosion-resistant stainless steel fasteners – Nuts with specified grades and property classes<\/b><\/p>\n\n\n\n\n
      Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
      BSI<\/b><\/a><\/td>\n2020<\/td>\n92<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":261699,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[305,2641],"product_tag":[],"class_list":{"0":"post-261695","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-21-060-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/261695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/261699"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=261695"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=261695"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=261695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}