Part Number: 820-4384771

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CONDITION:
NS
NAVAL SHIP SYSTEMS COMMAND80064
A P M HEXSEAL CORPORATION97539
A P M HEXSEAL CORPORATION97539
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.414 INCHES MINIMUM AND 0.531 INCHES MAXIMUM
FASTENER LENGTH0.484 INCHES MINIMUM AND 0.531 INCHES MAXIMUM
HEAD STYLEHEXAGON
HEAD HEIGHT0.172 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.425 INCHES MINIMUM AND 0.440 INCHES MAXIMUM
NOMINAL THREAD DIAMETER0.250 INCHES
FEATURES PROVIDEDFINISHED HEAD
THREAD QUANTITY PER INCH28
SPECIAL FEATURESFURNISHED WITH ONE SILICONE RUBBER O-RING
MATERIALSTEEL CORROSION RESISTING OVERALL
SPECIAL TEST FEATURESSPECIAL QUALITY CONTROL TESTING
TEST DATA DOCUMENT81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
THREAD SERIES DESIGNATORUNF
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFERENTIATED BY PACKAGING WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of .19 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of . 15 inch ( . 38 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.