5305-00-206-0240 THUMBSCREW Index 5305-00-206-0250 THUMBSCREW

National Stock Number:
5305-00-206-0241

Federal Supply Class:
5305

National Item Identification Number:
002060241

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:
M7420087SUB10PT165054WESTINGHOUSE ELECTRIC CORP POWER GENERATION-GENERATOR DIV
M7420087SUB10PT179500WESTINGHOUSE ELECTRIC CORP


Techincal Specification:
FASTENER LENGTH0.938 INCHES NOMINAL
HEAD DIAMETER0.500 INCHES NOMINAL
HEAD HEIGHT0.812 INCHES NOMINAL
HEAD STYLEKNURLED NO. 1
MATERIAL DOCUMENT AND CLASSIFICATION6478-1 FSCM 65054 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
POINT STYLECONE
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.438 INCHES MINIMUM
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNC


Click here to Register for Free 30-day Trial