BS 4929-1:1973

Co-operating organizations
Foreword
Specification
1 Scope
2 Definition
3 Property class designation system
4 Material and manufacture of steel nuts
5 Dimensional requirements
6 Mechanical requirements
7 Performance requirements
8 Test methods
9 Marking and identification
10 Inspection
11 Complete designation for the purpose of an enquiry
    or order
Tables
1 Mechanical properties of steel nuts
2 Dimensions of metric series prevailing-torque type
    nuts
3 Proof load, clamp load and prevailing-torques
    (coarse pitch series) property class 8
4 Proof load, clamp load and prevailing-torques
    (coarse pitch series) property class 12
5 Test washer, metric series

Dimensions, mechanical properties, performance requirements and nut heights for nuts in a range of sizes from 3 mm to 36 mm. The nuts may have either metallic or non-metallic locking elements. Temperature ranges in which the nuts may be used are also stated.