5305-01-175-6938, SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-175-6938

Federal Supply Class:
5305

National Item Identification Number:
011756938

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:

BACF34L4BS6HS	81205	THE BOEING COMPANY
CA21189-4-6HS	29372	HOWMET GLOBAL FASTENING SYSTEMS INC.

Techincal Specification:

COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH	1.047 INCHES MINIMUM AND 1.067 INCHES MAXIMUM
HEAD DIAMETER	0.360 INCHES MINIMUM AND 0.404 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	IRON ALLOY 660 OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
SPECIAL FEATURES	THREE SLOTS 0.040 IN. WIDE BY 0.029 IN. DEEP ALONG THE LONGITUDINAL AXIS AND 120 DEGREES APART; THREAD TO BE DOUBLE LEAD
WIDTH ACROSS FLATS	0.1562 INCHES MINIMUM AND 0.1587 INCHES MAXIMUM
SURFACE FINISH	32.0 MICROINCHES GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD CLASS	3A
THREAD LENGTH	0.477 INCHES MINIMUM AND 0.636 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	28

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