5305-01-204-0985 SCREW,CAP,SOCKET HEAD Index 5305-01-204-0987 SETSCREW

National Stock Number:
5305-01-204-0986

Federal Supply Class:
5305

National Item Identification Number:
012040986

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:
FF-S-8681348FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
MS16998-26L96906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.190 INCHES
THREAD QUANTITY PER INCH32
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.282 INCHES MINIMUM AND
0.375 INCHES MAXIMUM
FASTENER LENGTH0.344 INCHES MINIMUM AND
0.375 INCHES MAXIMUM
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM AND
CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND
45.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH155000 POUNDS PER SQUARE INCH
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.303 INCHES MINIMUM AND
0.312 INCHES MAXIMUM
HEAD HEIGHT0.185 INCHES MINIMUM AND
0.190 INCHES MAXIMUM
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.1562 INCHES MINIMUM AND
0.1587 INCHES MAXIMUM
LOCKING FEATURESTRIP OR
PATCH THREADS
SURFACE FINISH32.0 MICROINCHES THREADS
NONDEFINITIVE SPEC/STD DATA6 TYPE
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCEFF-S-86
MANUFACTURERS CODE96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCEMS16998-26L


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