MS17811A
Table I. Dash numbers and dimensions. (Continued)
Dash Number |
A Inside Diameter +.005 -.000 |
B Outside Diameter .005 |
C Thickness .002 |
-18 -19 1/ -20 -27 -28 -29 -30 |
.877 1.002 1.002 1.502 1.502 1.627 1.752 |
2.250 1.562 2.000 3.000 3.250 2.968 3.094 |
.187 .125 .125 .156 .156 .250 .250 |
1/ Dash number 20 is inactive for new design.
Requirements:
1. MATERIAL: Carbon steel, AISI 1020.
2. SURFACE ROUGHNESS: Surface roughness shall be in accordance with ANSI/ASME B46.1. Surfaces marked with are to have a surface roughness of 16 on sizes up to and including -9, and 32 on sizes -10 and larger. All other surfaces are to be 125 .
3. HEAT TREATMENT: Case hardened to a minimum case depth of .015 inch. Minimum hardness shall be
Rockwell 58 HRc.
4. WORKMANSHIP: All edges on sizes up to and including .125 inch thick shall not be less than .005 inch or more than .015 inch radius. On thicker sizes radius shall be .01 to .03 inch.
5. APPLICATION: Washer, thrust is designed primarily for supporting a load acting against a bearing taking an end thrust. This part is not to be confused with washer, flat, plain.
6. PART NUMBER: The MS part number is the basic MS number plus a dash number taken from the table. Example MS17811-12.
NOTES:
1. Dimension are in inches unless otherwise specified.
2. Interpret drawing in accordance with ASME Y14.5M.
3. In the event of a conflict between the text of this document and the references cited herein, the text of this document shall take precedence.
4. Unless otherwise specified, issues of referenced documents are those in effect at the time of solicitation. Military Interests:
Custodians: Preparing activity: Army - AT DLA - IS
Navy - OS
Reviewer:
Army - ME, MI Navy - AS
(Project 3120-0772)
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