BS 7371-7:1994

Committees responsible
Foreword
Specification
0. Introduction
1. Scope
2. References
3. Definitions
4. Application and type of coating
5. Coating
6. Chromate treatment
7. Suitability of coatings for components with
     parallel threads
8. Information to be documented and supplied to
     the coater
9. Identification
Annexes
A. (normative) Coating thickness for threaded parts
B. (normative) Measurement of coating thickness
C. (informative) Guidance on procedures that may be
     adopted to accommodate thick coatings
Tables
1. Nominal coating thicknesses
2. Coating designation and corrosion resistance
3. Designation of chromate treatments
A.1 Upper limits of nominal coating thickness
C.1 Minimum fundamental deviation required to
     accommodate coatings too thick to be applied to
     standard threads. Metric threads
Figure
B.1 Measuring area for local coating thickness
     measurement on fasteners
List of references

Specifies requirements for coatings applied by mechanically impacting zinc powder on to the component surface. Also specifies requirements for the following: the type of chromate conversion treatment to be applied; the coating thickness; adhesion test; quality assessment of the corrosion resistance of unused coated parts when subjected to neutral salt spray testing. Coverage includes definitions and identification. Also includes detailed tables and annexes.