1660-00-996-8253 GUIDE,DIAPHRAGM Index 4720-00-996-8255 HOSE ASSEMBLY,NONMETALLIC

National Stock Number:
4820-00-996-8254

Federal Supply Class:
4820

National Item Identification Number:
009968254

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.


Manufacturer Information:
396-0909445DUKES AEROSPACE, INC.


Techincal Specification:
BODY INSIDE DIAMETER0.188 INCHES NOMINAL
BODY OUTSIDE DIAMETER0.478 INCHES MINIMUM AND 0.480 INCHES MAXIMUM
FLANGE DIAMETER0.625 INCHES NOMINAL
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
OVERALL HEIGHT0.720 INCHES MINIMUM AND 0.740 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CLASS 416 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.625 INCHES SINGLE THREADED PORTION
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD LENGTH0.160 INCHES NOMINAL SINGLE THREADED PORTION
THREAD SERIES DESIGNATORUNF SINGLE THREADED PORTION
THREAD QUANTITY PER INCH18 SINGLE THREADED PORTION


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