BS 6105:1981

National foreword
Cooperating organizations
Specification
0 Introduction
1 Scope and field of application
2 References
3 Designation, marking, finish and magnetic properties
4 Chemical composition
5 Mechanical properties
6 Methods of test
Tables
1 ISO designation systems for stainless steel fasteners
2 Stainless steel fasteners - Grade composition ranges
3 Mechanical properties of martensitic and ferritic
   grade fasteners
4 Mechanical properties of austenitic grade fasteners
5 Breaking torque (Tm) for screws of M5 and smaller
Figures
1 Marking of bolts and screws - Examples
2 Marking of nuts - Examples of alternative marking
   practice
3 Bolt extensometer with self-aligning grips
4 Load-extension curve for stress at 0,2 % permanent
   strain (Rp0,2)
5 Determination of total extension at fracture (AL)
6 Apparatus for determination of breaking torque (Tm)
Annexes
A Stainless steel composition specifications (Extract
   from ISO 683/XIII)
B Stainless steels for cold heading and extruding
   (Extract from ISO 4954)
C Screw thread - Tensile stress areas
D Total extension at fracture (AL)

Specifications for bolts, screws, studs and nuts made from austenitic, ferritic, and martensitic grades of corrosion-resistant stainless steels. Applicable only to fastener components after completion of manufacture with nominal diameters from M1.6 up to and including M39.