5305-01-325-8978, SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-325-8978

Federal Supply Class:
5305

National Item Identification Number:
013258978

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:

0.375-16UNC-3AX2.000 IN. LG NICU	80204	AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED
0.375-16UNC-3AX2.000IN.LG NICUAL	80204	AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED
FF-S-86	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
FF-S-86,TYIV.375-16UNC-3AX2 NICU	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
FF-S-86TYIV.375-16UNC-3AX2NICUAL	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
QQ-N-286G	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC

Techincal Specification:

THREAD SERIES DESIGNATOR	UNC
NOMINAL THREAD DIAMETER	0.375 INCHES
THREAD QUANTITY PER INCH	16
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.641 INCHES MINIMUM AND
	1.766 INCHES MAXIMUM
FASTENER LENGTH	2.000 INCHES NOMINAL
MATERIAL	NICKEL ALLOY K-500 OR
	NICKEL ALLOY 502 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-N-286 FED SPEC ALL MATERIAL RESPONSES OVERALL
HEAD STYLE	FLAT COUNTERSUNK
HEAD DIAMETER	0.720 INCHES MINIMUM AND
	0.781 INCHES MAXIMUM
COUNTERSINK ANGLE	80.0 DEGREES MINIMUM AND
	84.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE	HEXAGON
WIDTH ACROSS FLATS	0.219 INCHES NOMINAL
SPECIFICATION/STANDARD DATA	81348-QQ-N-286G GOVERNMENT SPECIFICATION
SPEC/STD CONTROLLING DATA
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	FF-S-86TYIV.375-16UNC-3AX2NICUAL
MANUFACTURERS CODE	81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	QQ-N-286G

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