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Part Number

Part Number:
NSN:
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Item Name:
SEAT , VALVE

Definition:

A REPLACEABLE ITEM DESIGNED TO PROVIDE A 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.

CAGE Information

Code Company
06987 FL AEROSPACE CORP JANITROL AERO DIV/

Federal Supply Class

Title

VALVES, POWERED

Inclusions:

INCLUDES ELECTRIC MOTOR OPERATED VALVES; HYDRAULIC OPERATED VALVES; SOLENOID OPERATED VALVES.

Exclusions:

EXCLUDES ENGINE INTAKE AND EXHAUST VALVES (FSC 2990, 2815); VALVES SPECIFICALLY DESIGNED FOR USE WITH FIRE FIGHTING EQUIPMENT (FSC 4210); PLUMBING EQUIPMENT, AND THE LIKE (FSC 4540).

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASA THREAD LENGTH 0.106 INCHES MINIMUM SINGLE THREADED PORTION AND 0.118 INCHES MAXIMUM SINGLE THREADED PORTION
MATT MATERIAL STEEL COMP 303 OVERALL OR STEEL COMP 303MA OVERALL OR STEEL COMP 303SE OVERALL
THSD THREAD SERIES DESIGNATOR UNF SINGLE THREADED PORTION
AJSH SEAL ACCOMMODATION TYPE GROOVED
CQJX NOMINAL THREAD SIZE 0.250 INCHES SINGLE THREADED PORTION
AAJD THREAD CLASS 2A SINGLE THREADED PORTION
AJRF FLANGE SEAT TO DISK END HEIGHT 0.151 INCHES MINIMUM AND 0.163 INCHES MAXIMUM
CQFM HARDNESS RATING NOT RATED
ADAS BODY INSIDE DIAMETER 0.131 INCHES MINIMUM AND 0.132 INCHES MAXIMUM
STYL STYLE DESIGNATOR THREADED FLANGED
CQKM SEATING SURFACE SHAPE FLAT
AJSG SEAT ANGLE IN DEG 30.000 MINIMUM AND 35.000 MAXIMUM
AJRM UNDER FLANGE HEIGHT 0.106 INCHES MINIMUM AND 0.118 INCHES MAXIMUM
MDCL MATERIAL DOCUMENT AND CLASSIFICATION QQ-S-764 FED SPEC ALL MATERIAL RESPONSES OVERALL OR MIL-S-7720 MIL SPEC ALL MATERIAL RESPONSES OVERALL OR AMS5638 ASSN STD ALL MATERIAL RESPONSES OVERALL
FEAT SPECIAL FEATURES HEX FLANGE 0.312 IN. ACROSS FLATS
ABKK FLANGE DIAMETER 0.312 INCHES NOMINAL

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