5305-01-591-0860 SCREW,CAP,SOCKET HEAD 5305-01-591-1388 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-591-1277

Federal Supply Class:
5305

National Item Identification Number:
015911277

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:
NAS1351-14-7280205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
THREAD SERIES DESIGNATORUNRF
NOMINAL THREAD DIAMETER0.875 INCHES
THREAD QUANTITY PER INCH14
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH2.250 INCHES MINIMUM
FASTENER LENGTH4.500 INCHES NOMINAL
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONFF-S-86 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER1.293 INCHES MINIMUM AND
1.312 INCHES MAXIMUM
HEAD HEIGHT0.864 INCHES MINIMUM AND
0.875 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.094 INCHES NOMINAL


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