5820-01-038-4239 COUPLER ASSEMBLY Index 5960-01-038-4242 ELECTRONTUBE

National Stock Number:
5305-01-038-4240

Federal Supply Class:
5305

National Item Identification Number:
010384240

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:
SM-C-850394-180063US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR


Techincal Specification:
COLORBLACK OVERALL
FASTENER LENGTH0.390 INCHES NOMINAL
HANDLE DIAMETER0.188 INCHES NOMINAL
HANDLE LENGTH1.440 INCHES MINIMUM AND 1.560 INCHES MAXIMUM
HEAD DIAMETER0.620 INCHES NOMINAL
HEAD HEIGHT0.300 INCHES NOMINAL
HEAD STYLESLIDING HANDLE
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER0.216 INCHES
SPECIAL FEATURESCONSISTS OF SM-C-850394-5 AND SM-C-850394-7
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPAINT LUSTERLESS OVERALL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.140 INCHES NOMINAL
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNEF


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