5305-01-522-1210, SCREW,CAP,SOCKET HEAD

5306-01-522-1211 BOLT,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-522-1210

Federal Supply Class:
5305

National Item Identification Number:
015221210

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:

7226366-8

53711

NAVAL SEA SYSTEMS COMMAND

Techincal Specification:

FASTENER LENGTH	0.345 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD DIAMETER	0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
HEAD HEIGHT	0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM F593 ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OVERALL
NOMINAL THREAD DIAMETER	0.164 INCHES
SPECIAL FEATURES	MODIFIED FROM MS16995-25
WIDTH ACROSS FLATS	0.1406 INCHES MINIMUM AND 0.1426 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-83488 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	ALUMINUM OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.345 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNC
THREAD QUANTITY PER INCH	32

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