5305-00-206-0229 THUMBSCREW Index 5305-00-206-0241 THUMBSCREW

National Stock Number:
5305-00-206-0240

Federal Supply Class:
5305

National Item Identification Number:
002060240

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:
L9-6016SUB2PT13B150RAYTHEON COMPANY
L9-6016SUB2PT149956RAYTHEON COMPANY


Techincal Specification:
FASTENER LENGTH2.812 INCHES NOMINAL
HEAD HEIGHT0.250 INCHES NOMINAL
HEAD STYLETHUMB NO. 1
NOMINAL THREAD DIAMETER0.250 INCHES
POINT STYLEFLAT
SHOULDER DIAMETER0.375 INCHES NOMINAL FIRST SHOULDER
SHOULDER SHAPEROUND FIRST SHOULDER
SHOULDER LENGTH1.219 INCHES NOMINAL FIRST SHOULDER
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.500 INCHES MINIMUM
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNC


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