5305-01-274-1256, SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-274-1256

Federal Supply Class:
5305

National Item Identification Number:
012741256

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:

13234155	18876	U S ARMY AVIATION AND MISSILE COMMAND
38031K-4C-16	56878	SPS TECHNOLOGIES, LLC
M63CR420-165	17910	NYLOK LLC
TN33CR040J12PS	26304	TORKON FASTENER CORP

Techincal Specification:

FASTENER LENGTH	0.968 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
HARDNESS RATING	80.0 ROCKWELL B MINIMUM FASTENER
HEAD DIAMETER	0.122 INCHES MINIMUM AND 0.132 INCHES MAXIMUM
HEAD HEIGHT	0.419 INCHES MINIMUM AND 0.437 INCHES MAXIMUM
HEAD STYLE	BUTTON
INTERNAL DRIVE STYLE	HEXAGON
LOCKING FEATURE	PELLET THREADS
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A493 ASSN STD ALL MATERIAL RESPONSES FASTENER
MATERIAL	PLASTIC LOCKING FEATURE
MATERIAL	STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 FASTENER
MINIMUM TENSILE STRENGTH	80000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENT	PASSIVATE FASTENER
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.868 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNRC
WIDTH ACROSS FLATS	0.1562 INCHES MINIMUM AND 0.1582 INCHES MAXIMUM

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