5306-01-298-0638 BOLT,U Index 5306-01-298-0640 BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5305-01-298-0639

Federal Supply Class:
5305

National Item Identification Number:
012980639

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:
91746A41439428MCMASTER-CARR SUPPLY CO


Techincal Specification:
HEAD DIAMETER0.750 INCHES NOMINAL
HEAD STYLEKNURLED NO. 1
MATERIALSTEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNC


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