5305-01-188-6838, SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-188-6838

Federal Supply Class:
5305

National Item Identification Number:
011886838

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:

5189202-004

53711

NAVAL SEA SYSTEMS COMMAND

Techincal Specification:

FASTENER LENGTH	1.246 INCHES MINIMUM AND 1.250 INCHES MAXIMUM
HARDNESS RATING	80.0 ROCKWELL B MINIMUM OVERALL
HEAD DIAMETER	0.218 INCHES MINIMUM AND 0.226 INCHES MAXIMUM
HEAD HEIGHT	0.134 INCHES MINIMUM AND 0.138 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD ALL MATERIAL RESPONSES OVERALL
MATERIAL	STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OVERALL
MINIMUM YIELD STRENGTH	30000 POUNDS PER SQUARE INCH
MINIMUM TENSILE STRENGTH	80000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.138 INCHES
NONDEFINITIVE SPEC/STD DATA	6 TYPE
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.184 INCHES MINIMUM AND 1.246 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH	32
WIDTH ACROSS FLATS	0.109 INCHES NOMINAL

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