5305-01-219-2952, SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-219-2952

Federal Supply Class:
5305

National Item Identification Number:
012192952

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:

FF-S-86	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
MS16997-66L	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

THREAD SERIES DESIGNATOR	UNC
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	20
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.000 INCHES MINIMUM AND
	2.000 INCHES MAXIMUM
FASTENER LENGTH	1.960 INCHES MINIMUM AND
	2.000 INCHES MAXIMUM
MATERIAL	STEEL OVERALL
SURFACE TREATMENT	CADMIUM AND
	CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING	38.0 ROCKWELL C MINIMUM AND
	45.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH	150000 POUNDS PER SQUARE INCH
HEAD STYLE	FLAT CHAMFER
HEAD DIAMETER	0.365 INCHES MINIMUM AND
	0.375 INCHES MAXIMUM
HEAD HEIGHT	0.244 INCHES MINIMUM AND
	0.250 INCHES MAXIMUM
INTERNAL DRIVE STYLE	HEXAGON
WIDTH ACROSS FLATS	0.188 INCHES MINIMUM AND
	0.190 INCHES MAXIMUM
NONDEFINITIVE SPEC/STD DATA	6 TYPE
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	FF-S-86
MANUFACTURERS CODE	96906
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MS16997-66L

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