5305-01-686-9897 SCREW,CLOSE TOLERANCE 5305-01-687-0390 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-687-0257

Federal Supply Class:
5305

National Item Identification Number:
016870257

Description:
SCREW,CAP,SOCKET HEAD


Manufacturer Information:
NAS1351C7-2880205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
THREAD SERIES DESIGNATORUNRF
NOMINAL THREAD DIAMETER0.4375 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.375 INCHES NOMINAL
FASTENER LENGTH1.69 INCHES MINIMUM AND
1.75 INCHES MAXIMUM
MATERIALSTEEL CORROSION RESISTING OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONFF-S-86 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.642 INCHES MINIMUM AND
0.656 INCHES MAXIMUM
HEAD HEIGHT0.430 INCHES MINIMUM AND
0.437 INCHES MAXIMUM
CHAMFER ANGLE30.0 DEGREES MINIMUM AND
45.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.375 INCHES NOMINAL
LOCKING FEATURESELF-LOCKING OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYSCREW, CAP, SOCKET HEAD, UNDRILLED AND DRILLED, PLAIN AND SELF-LOCKING, ALLOY STEEL, CORROSION-RESISTANT STEEL AND HEAT- RESISTANT STEEL, UNRF-3A


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