BS 5412-5:1976

Foreword
Cooperating organizations
Specification
Section one. General
1 Scope
2 References
3 Definitions
4 Requirements for compliance with BS 5412 and BS 5413
5 Nominal size
6 Marking
7 Identification of taps
Section two. Physio-chemical characteristics:
              materials, coatings
8 General
9 Materials
10 Application of materials
11 Coatings
12 Workmanship
Appendices
A Low temperature test for 'O'-rings and other
    elastomeric type seals
B Properties of materials and test requirements for
    'O'-rings and other elastomeric type seals
C Adhesion to and corrosion of metals and plastics
    material by 'O'-rings and other elastomeric type
    seals. Test methods
D Properties of lubricating oils for materials tests
    for 'O'-rings and other elastomeric type seals
E Method for the determination of surface conditions
    of 'O'-ring and other elastomeric type seal
    materials on bending after ageing in air
F Method for the determination of tensile elongation
    at break of plastic materials
Figures
1 Adhesion and corrosion test apparatus
2 Test specimen

Characteristics and tests for ½ and ¾ nominal size draw-off taps.