5305-01-010-2339, THUMBSCREW

National Stock Number:
5305-01-010-2339

Federal Supply Class:
5305

National Item Identification Number:
010102339

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:

595294	06481	NORTHROP GRUMMAN SYSTEMS CORPORATION
595294	13973	LITTON SYSTEMS INC. DIV NAVIGATION SYSTEMS DIVISION

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.420 INCHES MINIMUM AND 0.460 INCHES MAXIMUM
FASTENER LENGTH	0.730 INCHES MINIMUM AND 0.770 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM
HEAD HEIGHT	0.453 INCHES MINIMUM AND 0.483 INCHES MAXIMUM
HEAD STYLE	THUMB NO. 3
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 302 OVERALL
NOMINAL THREAD DIAMETER	0.190 INCHES
POINT STYLE	FLAT
WIDTH BETWEEN FLATS	0.395 INCHES MINIMUM AND 0.425 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.270 INCHES MINIMUM AND 0.350 INCHES MAXIMUM
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNF

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