* OF THE FOLLOWING SUFFIXES MUST BE ADDED TO THE BASE NAAMS CODE NUMBER.
SUFFIX – STEEL, HEAT TREATMENT AND COATING
NONE – S.A.E. 8620, 58-62 Rc, 0.5-0.7mm DEEP AFTER GRINDING
T – S.A.E. 8620, 58-62 Rc, 0.5-0.7mm DEEP
AFTER GRINDING, TITANIUM NITRIDE,
1 TO 2 MICRONS THICK ON SURFACES
B, C, AND D (MINIMUM SURFACES).
COATING PROCESS SHALL NOT NEGATIVELY IMPACT PIN HARDNESS
MH – H13, 48-52 Rc
MA – H13, 48-52 Rc