Incorporates the following:
PD 2716 published 15 February 1957
PD 4559 published 15 May 1962
Amendment, February 2016 . Amends and replaces BS SP 55 and SP 56:1953
BS SP 55+AND SP 56:1953+A3:2016
$76.00
Specification for washers, spring, double coil (inch sizes), steel, cadmium plated and phosphor bronze. For aircraft
Category: BS