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National Stock Number:
4820-00-580-4140
Federal Supply Class:
4820
National Item Identification Number:
005804140
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:
| 30000404 | 81873 | WOODWARD HRT INC |
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Techincal Specification:
| STYLE DESIGNATOR | PLAIN FLANGED | | FLANGE DIAMETER | 0.373 INCHES MINIMUM AND | | 0.380 INCHES MAXIMUM | | BODY OUTSIDE DIAMETER | 0.326 INCHES MINIMUM AND | | 0.328 INCHES MAXIMUM | | BODY INSIDE DIAMETER | 0.187 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.069 INCHES MINIMUM AND | | 0.328 INCHES MAXIMUM | | UNDER FLANGE HEIGHT | 0.278 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND | | 36.0 ROCKWELL C MAXIMUM OVERALL | | SEATING SURFACE SHAPE | FLAT | | THREAD SERIES DESIGNATOR | UNC SINGLE THREADED PORTION | | NOMINAL THREAD SIZE | 0.112 INCHES SINGLE THREADED PORTION | | FSC APPLICATION DATA | SERVOCYLINDERAUTOMATIC PILOT SYSTEM,AIRCRAFT | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 81873 | | DESIGN CONTROL REFERENCE | 30000404 |
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