Tenders for Supply of Brass Plain Washer Bao Nickel Plated Size Od-14 Mm, Id- 6.6 Mm, Thickness 1.6 Mm +- 0.1 Mm As Per Drg. No. S-409/M. Specification. Is 410:1977, Irs S-23 Party Should Submit Test Certificate From Nabl Accreditted Lab To Confirm Required Specification