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National Stock Number:
4820-01-254-2983
Federal Supply Class:
4820
National Item Identification Number:
012542983
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:
| T21486-1 | 99167 | HAMILTON SUNDSTRAND CORPORATION |
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Techincal Specification:
| STYLE DESIGNATOR | PLAIN FLANGED | | FLANGE DIAMETER | 0.486 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 0.486 INCHES NOMINAL | | BODY INSIDE DIAMETER | 0.200 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.080 INCHES NOMINAL | | UNDER FLANGE HEIGHT | 0.230 INCHES NOMINAL | | MATERIAL | STEEL COMP 440A OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PHOSPHATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 56.0 ROCKWELL C MINIMUM AND | | 60.0 ROCKWELL C MAXIMUM OVERALL | | SEATING SURFACE SHAPE | ANGULAR | | SEAT ANGLE IN DEG | 30.000 NOMINAL | | FSC APPLICATION DATA | AIRCRAFT HYDRAULIC VACUUM DEICING SYSTEMS | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 99167 | | DESIGN CONTROL REFERENCE | T21486-1 |
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