Cadmium plate per O-P416. Type II. Class 2. Parts plated to Class 3 may be uaed
untll stock depleted. Embrittiement requirements per NAC?X)2.
Black bolts,
Chromium Plate - Chromlum plate per WPJ20, Class 2 on shank only. All other surfacoa
cadmium plated. No chromlum within .O20 of line 01 tangency of head-teahank fillkt.
Chromlum in thread runout pennittw+ Not requlrd for - 1 or -2 gripa
code "B" . Cadinium plate, as descfibed above, with dull black chromate treatment