5305-00-177-5281, SCREW,CAP,HEXAGON HEAD

5998-00-177-5279 ELECTRONIC COMPONENTS ASSEMBLY

National Stock Number:
5305-00-177-5281

Federal Supply Class:
5305

National Item Identification Number:
001775281

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:

AES01C375B25AW9A97	05047	THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
ASME B18.2.1	05047	THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
B1821BH038C225D	80204	AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED
FFS85	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
MS18154-65	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

FASTENER LENGTH	2.156 INCHES MINIMUM AND 2.250 INCHES MAXIMUM
HARDNESS RATING	32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT	0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM
HEAD STYLE	HEXAGON
HOLE CONFIGURATION STYLE	HEXAGON FLATS
HOLE DIAMETER	0.063 INCHES NOMINAL
HOLE QUANTITY	1
HOLE TYPE	DRILLED
MATERIAL DOCUMENT AND CLASSIFICATION	SAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
MINIMUM TENSILE STRENGTH	150000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.375 INCHES
NONDEFINITIVE SPEC/STD DATA	2 TYPE AND 10P STYLE AND 8 GRADE
SURFACE FINISH	63.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 2,CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.188 INCHES MINIMUM
THREAD QUANTITY PER INCH	16
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
WIDTH BETWEEN FLATS	0.551 INCHES MINIMUM AND 0.563 INCHES MAXIMUM

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