5305-01-437-2687 SCREW,CAP,SOCKET HEAD Index 5340-01-437-2689 PLATE,MOUNTING

National Stock Number:
5305-01-437-2688

Federal Supply Class:
5305

National Item Identification Number:
014372688

Description:
SCREW,CAP,SOCKET HEAD

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.


Manufacturer Information:
709-5343970 PC153711NAVAL SEA SYSTEMS COMMAND
709-5343970 PC1243689HUNTINGTON INGALLS INC
FF-S-8681349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
THREAD SERIES DESIGNATORUNC
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH18
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.625 INCHES NOMINAL
FASTENER LENGTH0.625 INCHES NOMINAL
MATERIALSTEEL CORROSION RESISTING OVERALL
PLASTIC POLYAMIDE LOCKING FEATURE
HEAD STYLEFLAT FILLISTER
HEAD DIAMETER0.457 INCHES MINIMUM AND
0.469 INCHES MAXIMUM
HEAD HEIGHT0.306 INCHES MINIMUM AND
0.312 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.250 INCHES NOMINAL
LOCKING FEATUREPATCH OR
PELLET OR
STRIP THREADS
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCEFF-S-86


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