BSI - BS 4463
Specification for Crinkle washers — For general engineering purposes — Metric series
|Publication Date:||15 May 1969|
|ICS Code (Washers, locking elements):||21.060.30|
Dimensions, tolerances and general requirements for metric series crinkle washers for use with metric threaded fasteners in the range 1.6 mm to 20 mm diameter inclusive.