5305-01-076-4910 SETSCREW Index 5305-01-076-4912 THUMBSCREW

National Stock Number:
5305-01-076-4911

Federal Supply Class:
5305

National Item Identification Number:
010764911

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:
NSCH-32901226HUTCHINSON AEROSPACE & INDUSTRY, INC.
NSCH-32901228TULLOCH AND SON


Techincal Specification:
FASTENER LENGTH1.500 INCHES NOMINAL
HEAD DIAMETER1.000 INCHES NOMINAL
HEAD HEIGHT0.375 INCHES NOMINAL
HEAD STYLEKNURLED NO. 1
MATERIALPLASTIC POLYAMIDE POINT
MATERIALSTEEL FASTENER
NOMINAL THREAD DIAMETER0.250 INCHES
POINT DIAMETER0.185 INCHES NOMINAL
POINT LENGTH0.156 INCHES NOMINAL
POINT STYLEUNIVERSAL
POINT SWIVEL INCLUDED ANGLE7.5 DEGREES NOMINAL
SURFACE TREATMENTOXIDE FASTENER
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.344 INCHES NOMINAL
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNC


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