5305-00-308-9628, SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-00-308-9628

Federal Supply Class:
5305

National Item Identification Number:
003089628

Description:
SCREW,CAP,SOCKET HEAD

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.

Manufacturer Information:

FFS86	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
MS35455-33	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

DEPARTURE FROM CITED DOCUMENT	AS MODIFIED BY REVISION B
FASTENER LENGTH	0.490 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD HEIGHT	0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	FED STD 66,AISI/SAE 4145 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 4145H OVERALL
MINIMUM YIELD STRENGTH	130000 POUNDS PER SQUARE INCH
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
NONDEFINITIVE SPEC/STD DATA	1 TYPE
WIDTH ACROSS FLATS	0.187 INCHES NOMINAL
THREAD DIRECTION	RIGHT-HAND
THREAD CLASS	3A
THREAD LENGTH	0.490 INCHES MINIMUM AND 0.520 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNC
THREAD QUANTITY PER INCH	20

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