5305-00-563-4006, THUMBSCREW

National Stock Number:
5305-00-563-4006

Federal Supply Class:
5305

National Item Identification Number:
005634006

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:

8007823

18876

U S ARMY AVIATION AND MISSILE COMMAND

Techincal Specification:

FASTENER LENGTH	17.922 INCHES MINIMUM AND 17.954 INCHES MAXIMUM
HEAD DIAMETER	1.245 INCHES MINIMUM AND 1.255 INCHES MAXIMUM
HEAD HEIGHT	0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM
HEAD STYLE	KNURLED NO. 2
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-764,TYPE 416 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
NOMINAL THREAD DIAMETER	0.312 INCHES
POINT STYLE	CONE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-C-320 FED SPEC SINGLE TREATMENT RESPONSE THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-N-290,CLASS 1,GRADE F FED SPEC SINGLE TREATMENT RESPONSE GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE HEAD
SURFACE TREATMENT	CHROMIUM THREADS
SURFACE TREATMENT	NICKEL GRIP
SURFACE TREATMENT	PASSIVATE HEAD
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.623 INCHES MINIMUM AND 0.627 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	18

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