5305-01-273-2270, SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-273-2270

Federal Supply Class:
5305

National Item Identification Number:
012732270

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
MS24667-8L	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
NASM24667	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	0.138 INCHES
THREAD QUANTITY PER INCH	32
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.186 INCHES MINIMUM AND
	0.278 INCHES MAXIMUM
FASTENER LENGTH	0.345 INCHES MINIMUM AND
	0.375 INCHES MAXIMUM
MATERIAL	PLASTIC LOCKING FEATURE
	STEEL FASTENER
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-F-18240 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE
	66 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
SURFACE TREATMENT	CADMIUM AND
	CHROMATE FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND
	45.0 ROCKWELL C MAXIMUM FASTENER
HEAD STYLE	FLAT COUNTERSUNK
HEAD DIAMETER	0.261 INCHES MINIMUM AND
	0.307 INCHES MAXIMUM
COUNTERSINK ANGLE	80.0 DEGREES MINIMUM AND
	84.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE	HEXAGON
WIDTH ACROSS FLATS	0.078 INCHES NOMINAL
LOCKING FEATURE	PATCH OR
	STRIP THREADS
NONDEFINITIVE SPEC/STD DATA	4 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	NASM24667

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