Nickel Military Standard: QQ-N-290A

NickelMil SpecThicknessComments
SB = Single layer coating in bright nickel finishClass1: Protection against corrosion or for decorative applicationsSteels, Zinc and Zinc AlloysCopper and Copper Alloys
SD = Single layer coating in dull or semi-bright finish Grade A0.0016"SD and MN/A
M = Multilayer coatingGrade B0.0012"SD and MSB and M
Grade C0.001"MSB, SD and M
Grade D0.0008"SB, SD and MSD and M
Grade E0.0006"SB, SD and MSB, SD and M
Grade F0.0004"SB, SD and MSB, SD and M
Grade G0.0002"N/ASB, SD and M
Class2: Abrasion resistance; for build-up of worn or undersized parts; protection against corrosive chemical environmentsNickel plated to specified thickness
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