5305-01-276-3329 SCREW,MACHINE Index 5306-01-276-3331 BOLT,SHEAR

National Stock Number:
5305-01-276-3330

Federal Supply Class:
5305

National Item Identification Number:
012763330

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:
3176207-C-41610001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
FASTENER LENGTH3.500 INCHES NOMINAL
HARDNESS RATING74.0 ROCKWELL B MINIMUM FASTENER
HEAD DIAMETER1.479 INCHES MINIMUM AND 1.500 INCHES MAXIMUM
HEAD HEIGHT0.988 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
LOCKING FEATUREPATCH THREADS
MATERIALSTEEL FASTENER
MINIMUM YIELD STRENGTH26000 POUNDS PER SQUARE INCH
MINIMUM TENSILE STRENGTH70000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER1.000 INCHES
WIDTH ACROSS FLATS0.750 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 ASSN STD SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENTZINC FASTENER
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH3.250 INCHES MINIMUM AND 3.500 INCHES MAXIMUM
THREAD QUANTITY PER INCH8
THREAD SERIES DESIGNATORUNC


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