5305-00-206-7470 SCREW,CAP,SOCKET HEAD Index 5811-00-206-7488 CORD TENSION ASSEMBLY

National Stock Number:
5305-00-206-7478

Federal Supply Class:
5305

National Item Identification Number:
002067478

Description:
THUMBSCREW

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use SCREW (as modified) or BOLT (as modified).


Manufacturer Information:
760042519200US ARMY ARDEC RDECOM


Techincal Specification:
FASTENER LENGTH15.125 INCHES NOMINAL
HEAD DIAMETER1.250 INCHES NOMINAL
HEAD HEIGHT0.625 INCHES NOMINAL
HEAD STYLEKNURLED NO. 1
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES
POINT STYLEFLAT
SHOULDER DIAMETER0.625 INCHES NOMINAL FIRST SHOULDER
SHOULDER SHAPEROUND FIRST SHOULDER
SHOULDER LENGTH0.250 INCHES NOMINAL FIRST SHOULDER
SPECIAL FEATURESSHOULDERED UNTHD PORTION DRILLED FOR PIN SPRING NO. 3
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.750 INCHES MINIMUM
THREAD QUANTITY PER INCH18
THREAD SERIES DESIGNATORUNC


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