5305-01-081-0129, SCREW,CAP,HEXAGON HEAD

National Stock Number:
5305-01-081-0129

Federal Supply Class:
5305

National Item Identification Number:
010810129

Description:
SCREW,CAP,HEXAGON HEAD

Detail:
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.

Manufacturer Information:

NAS1020-44

80205

NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
THREAD LENGTH	1.816 INCHES MINIMUM AND
	1.876 INCHES MAXIMUM
FASTENER LENGTH	4.581 INCHES MINIMUM AND
	4.611 INCHES MAXIMUM
MATERIAL	IRON ALLOY 660 OVERALL
HEAD STYLE	HEXAGON
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD DIAMETER	1.250 INCHES
THREAD QUANTITY PER INCH	12
THREAD CLASS	3A
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5732 ASSN STD 1ST MATERIAL RESPONSE OR
	AMS 5737 ASSN STD 1ST MATERIAL RESPONSE OR
	AMS 5733 ASSN STD 2ND MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD HEIGHT	0.656 INCHES MINIMUM AND
	0.672 INCHES MAXIMUM
WIDTH BETWEEN FLATS	1.801 INCHES MINIMUM AND
	1.815 INCHES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	4.115 INCHES MINIMUM AND
	4.135 INCHES MAXIMUM FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.141 INCHES MINIMUM AND
	0.151 INCHES MAXIMUM FIRST HOLE
PART NAME ASSIGNED BY CONTROLLING AGENCY	NAVY SPECIAL PROJECT
SPECIFICATION/STANDARD DATA	80205-NAS1020 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD

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