5305-01-274-9809 SCREW,MACHINE Index 5306-01-274-9811 BOLT,SHEAR

National Stock Number:
5305-01-274-9810

Federal Supply Class:
5305

National Item Identification Number:
012749810

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:
MS3212-48L80205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
MS3212-48L96906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
FASTENER LENGTH0.418 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
FEATURES PROVIDEDO RING
HEAD HEIGHT0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM
HEAD DIAMETER0.473 INCHES MINIMUM AND 0.517 INCHES MAXIMUM
HEAD STYLEPAN NO. 2
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
LOCKING FEATURESTRIP OR PELLET OR PATCH THREADS
MATERIALPLASTIC LOCKING FEATURE
MATERIALSTEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 FASTENER
NOMINAL THREAD DIAMETER0.250 INCHES
SPECIAL FEATURESSILICONE RUBBER COMP A PER MIL-S-82496 O'RING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENTPASSIVATE FASTENER
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A
THREAD LENGTH0.318 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNC
THREAD QUANTITY PER INCH20


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