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National Stock Number:
4820-00-005-7396
Federal Supply Class:
4820
National Item Identification Number:
000057396
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:
| 383V304 | 00672 | GRIMES AEROSPACE CO |
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Techincal Specification:
| BODY INSIDE DIAMETER | 0.875 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 1.845 INCHES MINIMUM AND 1.870 INCHES MAXIMUM | | FLANGE DIAMETER | 1.620 INCHES MINIMUM AND 1.630 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.834 INCHES NOMINAL | | HARDNESS RATING | 25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | SEAT ANGLE IN DEG | 0.750 NOMINAL | | SEATING SURFACE SHAPE | ANGULAR | | SPECIAL FEATURES | FOUR 0.506 IN.DIA HOLES EQUALLY SPACED IN BOYD | | STYLE DESIGNATOR | PLAIN FLANGED | | SURFACE TREATMENT | PASSIVATE OVERALL | | UNDER FLANGE HEIGHT | 1.433 INCHES MINIMUM AND 1.443 INCHES MAXIMUM |
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