5305-00-478-0643, THUMBSCREW

National Stock Number:
5305-00-478-0643

Federal Supply Class:
5305

National Item Identification Number:
004780643

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:

703061-1

96214

RAYTHEON COMPANY

Techincal Specification:

FASTENER LENGTH	3.040 INCHES MINIMUM AND 3.040 INCHES MINIMUM AND 3.060 INCHES MAXIMUM3.060 INCHES MAXIMUM
HEAD DIAMETER	0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
HEAD HEIGHT	0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM
HEAD STYLE	KNURLED NO. 1KNURLED NO. 1
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-7720 MIL SPEC ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 316 OVERALL
NOMINAL THREAD DIAMETER	0.138 INCHES0.138 INCHES
POINT STYLE	FLATFLAT
SHOULDER DIAMETER	0.164 INCHES MINIMUM AND 0.165 INCHES MAXIMUM FIRST SHOULDER
SHOULDER LENGTH	2.790 INCHES MINIMUM AND 2.810 INCHES MAXIMUM FIRST SHOULDER
SHOULDER SHAPE	ROUND FIRST SHOULDERROUND FIRST SHOULDER
THREAD LENGTH	0.240 INCHES MINIMUM AND 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM0.260 INCHES MAXIMUM
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HANDRIGHT-HAND
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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