5305-00-275-5397 THUMBSCREW Index 5305-00-275-5404 THUMBSCREW

National Stock Number:
5305-00-275-5400

Federal Supply Class:
5305

National Item Identification Number:
002755400

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:
12Z15-2210001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
FASTENER LENGTH0.500 INCHES NOMINAL
HEAD HEIGHT0.500 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
HEAD STYLEWING NO. 2
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 70B ASSN STD 1ST MATERIAL RESPONSE OR QQ-B-639 FED SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY 464 OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
POINT STYLEFLAT
WIDTH BETWEEN FLATS1.062 INCHES MINIMUM AND 1.125 INCHES MAXIMUM
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.375 INCHES MINIMUM
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)


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