5305-01-389-0869, SCREW,CAP,SOCKET HEAD

1240-01-389-0868 RING,RETAINING,OPTICAL ELEMENT

National Stock Number:
5305-01-389-0869

Federal Supply Class:
5305

National Item Identification Number:
013890869

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
MS24667-2ZL	80205	NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
MS24667-2ZL	96906	MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

	ZINC AND
	CHROMATE FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
	ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE FASTENER
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND
	45.0 ROCKWELL C MAXIMUM OVERALL
	36.0 ROCKWELL C MINIMUM AND
	45.0 ROCKWELL C MAXIMUM FASTENER
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
HEAD STYLE	FLAT COUNTERSUNK
HEAD DIAMETER	0.218 INCHES MINIMUM AND
	0.255 INCHES MAXIMUM
COUNTERSINK ANGLE	80.0 DEGREES MINIMUM AND
	84.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE	HEXAGON
WIDTH ACROSS FLATS	0.062 INCHES NOMINAL
LOCKING FEATURE	PATCH OR
	STRIP THREADS
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	FF-S-86
THREAD SERIES DESIGNATOR	UNC
NOMINAL THREAD DIAMETER	0.112 INCHES
THREAD QUANTITY PER INCH	40
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.212 INCHES MINIMUM AND
	0.292 INCHES MAXIMUM
FASTENER LENGTH	0.345 INCHES MINIMUM AND
	0.375 INCHES MAXIMUM
MATERIAL	STEEL OVERALL
	PLASTIC POLYAMIDE LOCKING FEATURE
	STEEL FASTENER
MATERIAL DOCUMENT AND CLASSIFICATION	FED 66 FED STD ALL MATERIAL RESPONSES OVERALL
	FED 66 FED STD ALL MATERIAL RESPONSES FASTENER
SURFACE TREATMENT	ZINC AND
	CHROMATE OVERALL

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