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National Stock Number:
4820-00-682-5320
Federal Supply Class:
4820
National Item Identification Number:
006825320
Description:
SEAT,VALVE
Detail:
A replaceable item designed to provide a circular stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.
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Manufacturer Information:
| 17935 | 99643 | EATON AEROSPACE LLC |
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Techincal Specification:
| STYLE DESIGNATOR | PLAIN FLANGED | | FLANGE DIAMETER | 0.747 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 0.670 INCHES MINIMUM AND | | 0.672 INCHES MAXIMUM | | BODY INSIDE DIAMETER | 0.374 INCHES MINIMUM AND | | 0.376 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.281 INCHES NOMINAL | | UNDER FLANGE HEIGHT | 0.500 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,CLASS 440C FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HARDNESS RATING | 55.0 ROCKWELL C MINIMUM AND | | 60.0 ROCKWELL C MAXIMUM OVERALL | | SEATING SURFACE SHAPE | FLAT | | SEAL ACCOMMODATION TYPE | GROOVED | | THREAD SERIES DESIGNATOR | UNF SINGLE THREADED PORTION | | NOMINAL THREAD SIZE | 0.625 INCHES SINGLE THREADED PORTION | | THREAD QUANTITY PER INCH | 18 SINGLE THREADED PORTION | | THREAD CLASS | 3A SINGLE THREADED PORTION | | THREAD LENGTH | 0.187 INCHES NOMINAL SINGLE THREADED PORTION | | FSC APPLICATION DATA | VALVE,BRAKE CONTROL | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 99643 | | DESIGN CONTROL REFERENCE | 17935 |
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