MS16634C
REQUIREMENTS:
1. CLASSIFICATION: RETAINING RINGS FURNISHED UNDER THIS STANDARD SHALL BE TYPE I, CLASS 3 OF THE PROCUREMENT SPECIFICATION.
2. MATERIAL:
(a) CARBON SPRING STEEL, GRADE 1060 THRU 1095 (UNS G10600 THRU G10950) IN ACCORDANCE WITH ASTM A 568/A568M OR ASTM A684/A684M.
(b) CORROSION RESISTANT STEEL, IN ACCORDANCE WITH SAE AMS 5520 (UNS S15700).
(c) BERYLLIUM COPPER, ALLOY NUMBER 170 (UNS C17000) OR ALLOY NUMBER 172 (UNS C17200) IN ACCORDANCE WITH ASTM B194.
3. HARDNESS:
TABLE II. HARDNESS.
0SHAFT (REF) |
CARBON STEEL |
CORROSION RESISTANT STEEL |
BERYLLIUM COPPER |
.110 TO .219 INCL |
84.5-87 HRI5N |
82.5-86 HRI5N |
77-82 HRI5N |
.250 TO .312 INCL |
66.5-71 HR30N |
63-69.5 HR30N |
77-82 HRI5N |
.375 TO 1.375 INCL |
47-52 HRC |
44-51 HRC |
4. PROTECTIVE FINISH OR TREATMENT:
a. CARBON STEEL - SHALL BE AS SPECIFIED (SEE TABLE Ill OR IV)
1. CADMIUM PLATE IN ACCORDANCE WITH SAE AMS-QQ-P-416, TYPE II, CLASS 3 OR ASTM B 696, TYPE II, CLASS 5.
2. ZINC COAT IN ACCORDANCE WITH ASTM B633, TYPE II, CLASS Fe/Zn 5 or ASTM B 695, TYPE II, CLASS 5.
3. PHOSPHATE COAT IN ACCORDANCE WITH MIL-DTL-16232, TYPE Z, CLASS 2.
b. CORROSION RESISTANT STEEL - SHALL BE CLEANED, DESCALED AND PASSIVATED IN ACCORDANCE WITH SAE AMS2700.
5. PART NUMBER: THE BASIC MS PART NUMBER IS FOLLOWED BY A DASH NUMBER TAKEN FROM TABLE Ill OR IV.
EXAMPLE: MS16634-1011 IS THE PART NUMBER FOR A CARBON STEEL, CADMIUM PLATE, EXTERNAL, BOWED "E" RETAINING RING FOR USE ON A .110 SHAFT DIAMETER.
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