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National Stock Number:
5220-00-226-8399
Federal Supply Class:
5220
National Item Identification Number:
002268399
Description:
PLATE,SURFACE
Detail:
A RECTANGULAR OR SQUARE PRECISION TOOL HAVING A FLAT WORKING SURFACE(S) OF SPECIFIC FLATNESS. IT IS USED AS A DATUM PLANE IN CONNECTION WITH VARIOUS LAYOUT, INSPECTION, AND CALIBRATION OPERATIONS. IT MAY ALSO BE USED AS A LAPPING PLATE, BUT IS NOT GROOVED. SEE ALSO BLOCK, LAPPING; PLATE, DUPLEX, SURFACE AND LAPPING; AND PLATE, LAPPING.
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Manufacturer Information:
| GGGP463 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC | | MIL-G-87964 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | T0LCHECK | 28318 | STARRETT L S THE CO STARRETT GRANITE SURFACE PLATE DIV |
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Techincal Specification:
| DEPARTURE FROM CITED DOCUMENT | AS MODIFIED BY SPECIAL FEATURES | | MATERIAL | GRANITE | | NONDEFINITIVE SPEC/STD DATA | A GRADE AND 1 CLASS | | SPECIAL FEATURES | SURFACE ACCURACY PLUS OR MINUS 0.0001; W/SURFACE PLATE INSPECTION GAGE AND FIXTURES INCL | | WORKING SURFACE FINISH | HAND SCRAPED EQUIVALENT | | WORKING SURFACE QUANTITY | 1 | | SURFACE LENGTH | 18.000 INCHES NOMINAL | | SURFACE WIDTH | 12.000 INCHES NOMINAL |
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