Specification for crinkle washers for general engineering purposes. Metric series has-corrigendum although they might not cover

although they might not cover all aspects of every type and size of project

PD 6689 does not apply to the following areas:

Since its inception in 1966

21 Resistance to heat

Medical laboratory services are essential to patient care and therefore must be available to meet the needs of all patients and the clinical personnel responsible for the care of those patients

Specification for crinkle washers for general engineering purposes. Metric series has-corrigendum although they might not cover1 Scope This British Standard specifies the dimensions, tolerances and general requirements for metric series crinkle washers suitable for use with metric threaded fasteners in the range 1. 6 mm (M1. 6) to 20 mm (M20) diameter inclusive.