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National Stock Number:
4820-01-254-6775
Federal Supply Class:
4820
National Item Identification Number:
012546775
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:
| 20645-1 | 99167 | HAMILTON SUNDSTRAND CORPORATION |
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Techincal Specification:
| BODY INSIDE DIAMETER | 0.156 INCHES MINIMUM | | BODY OUTSIDE DIAMETER | 0.250 INCHES NOMINAL | | FLANGE DIAMETER | 0.372 INCHES MINIMUM AND 0.374 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.078 INCHES MINIMUM AND 0.082 INCHES MAXIMUM | | FSC APPLICATION DATA | AIRCRAFT HYDRAULIC SYSTEM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 440C OVERALL | | SEAT ANGLE IN DEG | 30.000 NOMINAL | | SEATING SURFACE SHAPE | ANGULAR | | STYLE DESIGNATOR | PLAIN FLANGED | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | UNDER FLANGE HEIGHT | 0.285 INCHES MINIMUM AND 0.299 INCHES MAXIMUM |
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