5305-00-531-1766 SCREW,MACHINE Index 5305-00-531-1773 SETSCREW

National Stock Number:
5305-00-531-1772

Federal Supply Class:
5305

National Item Identification Number:
005311772

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:
12Z1037-7694135NAVAL ORDNANCE STANDARDS


Techincal Specification:
FASTENER LENGTH0.594 INCHES MINIMUM AND 0.641 INCHES MAXIMUM
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.178 INCHES MINIMUM AND 0.183 INCHES MAXIMUM
HEAD HEIGHT0.109 INCHES MINIMUM AND 0.112 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-764 FED SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 304 OR STEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER0.112 INCHES
WIDTH ACROSS FLATS0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM
SURFACE TREATMENTPASSIVATE AND OXIDE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.544 INCHES MINIMUM AND 0.641 INCHES MAXIMUM
THREAD QUANTITY PER INCH40
THREAD SERIES DESIGNATORUNC


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