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BS 7371-12:2008

$86.31

Coatings on metal fasteners – Requirements for imperial fasteners

Published By Publication Date Number of Pages
BSI 2008 14
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This standard gives thickness requirements for coatings on imperial metal fasteners and can be used in conjunction with all parts of BS 7371.

NOTE 1 For information on coating materials, see the relevant part of BS 7371.

This standard does not cover components such as self-tapping screws and wood screws.

This standard includes area tables (in square inch units) for imperial fasteners, and factors for thickness determination (see Table 2 to Table 8).

NOTE 2 Details concerning cadmium have not been included in this standard due to the restrictions placed on the marketing and use of cadmium and its compounds contained in national and international regulations.

PDF Catalog

PDF Pages PDF Title
3 Contents
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Screw thread dimensions 1
5 Coating thickness 2
6 Application and type of coating 2
7 Measurement of coating thickness 2
Annexes
Annex A (informative) Strip and weigh method for the determination of group and sample average plating thickness of silver 8
Bibliography 9
List of tables
Table 1 – Plating thickness 2
Table 2 – Screws and bolts: B.S.W. and B.S.F. threads 3
Table 3 – Screws and bolts: UNC and UNF threads 4
Table 4 – Screws and bolts: B.A. threads 5
Table 5 – Screws and bolts: B.S.C. and B.S.P. threads 5
Table 6 – Nuts: B.S.W. and B.S.F. threads 6
Table 7 – Nuts: B.A. threads 6
Table 8 – Nuts: UNC and UNF threads 7
4 Foreword
5 1 Scope
2 Normative references
3 Terms and definitions
4 Screw thread dimensions
6 5 Coating thickness
Table 1 Plating thickness
6 Application and type of coating
7 Measurement of coating thickness
7 Table 2 Screws and bolts: B.S.W. and B.S.F. threads
8 Table 3 Screws and bolts: UNC and UNF threads
9 Table 4 Screws and bolts: B.A. threads
Table 5 Screws and bolts: B.S.C. and B.S.P. threads
10 Table 6 Nuts: B.S.W. and B.S.F. threads
Table 7 Nuts: B.A. threads
11 Table 8 Nuts: UNC and UNF threads
12 Annex A (informative) Strip and weigh method for the determination of group and sample average plating thickness of silver
a) sulphuric acid (d 1.84): 19 parts by volume;
b) nitric acid (d 1.42): 1 part by volume;
c) temperature: 60 ˚C-70 ˚C.
13 Bibliography
BS 7371-12:2008
$86.31