NSN 3120-00-253-6078
Part Details | THRUST WASHER BEARING
3120-00-253-6078 An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also WASHER, FLAT and SPACER, SLEEVE.
Alternate Parts: 10159039, 3120-00-253-6078, 00-253-6078, 3120002536078, 002536078
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 31 | JAN 13, 1972 | 00-253-6078 | 13211 ( BEARING, WASHER, THRUST ) |
REFERENCE DRAWINGS & PICTURES
RECTANGULAR
ROUND
ROUND
Cross Reference | NSN 3120-00-253-6078
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 10159039 | 18876 | U S ARMY AVIATION AND MISSILECOMMAND |
Technical Data | NSN 3120-00-253-6078
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | ROUND |
| OUTSIDE DIAMETER | 1.9070 INCHES MINIMUM AND 1.9270 INCHES MAXIMUM |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| OVERALL THICKNESS | 0.0920 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM |
| CENTER HOLE SHAPE STYLE | ROUND |
| DIAMETER | 1.2520 INCHES MINIMUM AND 1.2620 INCHES MAXIMUM |
| FEATURES PROVIDED | CASEHARDENED |
| SPECIAL FEATURES | MATERIAL AISI 1018 SILICON KILLED 0.015 MIN 0.030 MAX SILICON,MATERIAL AISI 1074 MOD BY INCREASE OF MAX MANGANESE CONTENT FROM 0.80 PCT TO 0.90 PCT,OPTIONAL MATERIAL AISI 1074 MAY BE THROUGH HARDENED |