This document specifies requirements for non-electrolytically applied zinc flake coating systems for steel fasteners. It is applicable to coatings:<\/p>\n
with or without hexavalent chromium;<\/p>\n<\/li>\n
with or without top coat;<\/p>\n<\/li>\n
with or without lubricant (integral lubricant and\/or subsequently added lubricant).<\/p>\n<\/li>\n<\/ul>\n
It is applicable to bolts, screws, studs and nuts with ISO metric thread, to fasteners with non-ISO metric thread, and to non-threaded fasteners such as washers, pins, clips, etc.<\/p>\n
This document does not specify requirements for such fastener properties as weldability or paintability. It is not applicable to mechanically applied zinc coatings.<\/p>\n
\nNOTE Coatings in accordance with this document are especially used for high strength fasteners (\u2265 1 000 MPa) to avoid risk of internal hydrogen embrittlement (IHE \u2014 see 4.4).<\/p>\n<\/blockquote>\n
Information for design and assembly of coated fasteners is given in Annex A.<\/p>\n
PDF Catalog<\/h4>\n
\n
\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 2<\/td>\n National foreword <\/td>\n<\/tr>\n \n 4<\/td>\n European foreword <\/td>\n<\/tr>\n \n 6<\/td>\n Foreword <\/td>\n<\/tr>\n \n 7<\/td>\n 1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n\n 8<\/td>\n 4 General characteristics of the coating
4.1 Zinc flake coating systems
4.2 Composition of the systems
4.3 Mechanical and physical properties and curing <\/td>\n<\/tr>\n\n 9<\/td>\n 4.4 Avoidance of internal hydrogen embrittlement
4.5 Coating systems and coating processes
5 Corrosion protection and testing
5.1 General
5.2 Neutral salt spray test <\/td>\n<\/tr>\n\n 10<\/td>\n 5.3 Sulfur dioxide test (Kesternich test)
5.4 Bulk handling, automatic processes such as feeding and\/or sorting, storage and transport
6 Dimensional requirements and testing
6.1 General
6.2 Fasteners with ISO metric thread
6.2.1 Coating thickness <\/td>\n<\/tr>\n\n 11<\/td>\n 6.2.2 Gaugeability and assemblability <\/td>\n<\/tr>\n \n 12<\/td>\n 6.3 Other fasteners
7 Mechanical and physical properties and testing
7.1 Appearance
7.2 Corrosion resistance related to temperature
7.3 Test methods for thickness or coating weight determination <\/td>\n<\/tr>\n\n 13<\/td>\n 7.4 Ductility <\/td>\n<\/tr>\n \n 14<\/td>\n 7.5 Adhesion\/cohesion
7.6 Sacrificial cathodic protection
7.7 Torque\/clamp force relationship
7.8 Determination of hexavalent chromium
8 Applicability of tests
8.1 General
8.2 Tests mandatory for each lot <\/td>\n<\/tr>\n\n 15<\/td>\n 8.3 Tests for in-process control
8.4 Tests to be performed when specified by the purchaser
9 Designation
9.1 Designation of zinc flake coating systems for the order <\/td>\n<\/tr>\n\n 16<\/td>\n 9.2 Designation of zinc flake coating systems for labelling
10 Ordering requirements <\/td>\n<\/tr>\n\n 18<\/td>\n Annex A (informative) Design aspects and assembly of coated fasteners <\/td>\n<\/tr>\n \n 22<\/td>\n Annex B (informative) Coating thickness and thread clearance for ISO metric screw threads <\/td>\n<\/tr>\n \n 29<\/td>\n Annex C (informative) Coating systems tested in accordance with ISO 9227, NSS \u2014 Evaluation of cabinet corrosivity for the neutral salt spray test <\/td>\n<\/tr>\n \n 37<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Fasteners. Non-electrolytically applied zinc flake coating systems<\/b><\/p>\n
\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2018<\/td>\n 38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":261224,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[442,2641],"product_tag":[],"class_list":{"0":"post-261218","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-25-220-40","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\/261218","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\/261224"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=261218"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=261218"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=261218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}