5305-00-013-8271 SCREW,CAP,SOCKET HEAD Index 5305-00-013-8278 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-00-013-8277

Federal Supply Class:
5305

National Item Identification Number:
000138277

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:
13827712204DAIMLER CHRYSLER
13827721450ARMY WEAPONS COMMAND ATTN AMSWE-REE-S
13827724617GENERAL MOTORS CORP
41382776N299AGCO CORP PARTS OPN
1382777X677GENERAL MOTORS LLC
FF-S-8681348FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.438 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.770 INCHES MAXIMUM
FASTENER LENGTH0.740 INCHES MINIMUM AND
0.770 INCHES MAXIMUM
MATERIALSTEEL OVERALL
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND
43.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.615 INCHES MINIMUM AND
0.625 INCHES MAXIMUM
HEAD HEIGHT0.430 INCHES MINIMUM AND
0.438 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.312 INCHES MINIMUM AND
0.315 INCHES MAXIMUM
NONDEFINITIVE SPEC/STD DATA 6 TYPE
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCEFF-S-86


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