5305-01-389-7981, SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-389-7981

Federal Supply Class:
5305

National Item Identification Number:
013897981

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:

NAS1351-4LE32P

80205

NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE

Techincal Specification:

THREAD SERIES DESIGNATOR	UNRF
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	28
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.000 INCHES MINIMUM
FASTENER LENGTH	1.960 INCHES MINIMUM AND
	2.000 INCHES MAXIMUM
MATERIAL	PLASTIC POLYAMIDE LOCKING FEATURE
	STEEL UNS K03104 FASTENER
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
SURFACE TREATMENT	CADMIUM AND
	CHROMATE FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY 2 CL 2 FED SPEC ALL TREATMENT RESPONSES FASTENER
HARDNESS RATING	37.0 ROCKWELL C MINIMUM AND
	43.0 ROCKWELL C MAXIMUM FASTENER
MINIMUM TENSILE STRENGTH	180000 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	0.1875 INCHES MINIMUM AND
	0.1900 INCHES MAXIMUM
LOCKING FEATURE	PATCH OR
	PELLET OR
	STRIP THREADS
SPECIFICATION/STANDARD DATA	80205-NAS1351 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD

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