5305-01-387-0539, SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-387-0539

Federal Supply Class:
5305

National Item Identification Number:
013870539

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:

2643-930-53FNA30	96169	ELECTRIC BOAT CORPORATION
801-6641190FNA30	53711	NAVAL SEA SYSTEMS COMMAND
MIL-DTL-1222	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MIL-S-1222	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

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	0.875 INCHES MINIMUM AND
	1.000 INCHES MAXIMUM
FASTENER LENGTH	1.000 INCHES NOMINAL
MATERIAL	PLASTIC ACETAL LOCKING FEATURE
	STEEL COMP 630 FASTENER
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A564 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
	MIL-F-18240 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE
	ASTM A564 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
SURFACE TREATMENT	LUBRICANT OVERALL
	LUBRICANT FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-L-24479, FN 45 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
	MIL-L-24479, FN 45 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER
HARDNESS RATING	28.0 ROCKWELL C MINIMUM AND
	38.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH	135000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH	105000 POUNDS PER SQUARE INCH
HEAD STYLE	FLAT CHAMFER
HEAD DIAMETER	0.550 INCHES MINIMUM AND
	0.562 INCHES MAXIMUM
HEAD HEIGHT	0.368 INCHES MINIMUM AND
	0.375 INCHES MAXIMUM
INTERNAL DRIVE STYLE	HEXAGON
WIDTH ACROSS FLATS	0.312 INCHES NOMINAL
LOCKING FEATURE	PATCH OR
	PELLET OR
	STRIP THREADS
SPECIAL FEATURES	AGE HARDEN TO 1075 DEGREES
NONDEFINITIVE SPEC/STD DATA	2 TYPE AND
	630 GRADE
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE	81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MIL-DTL-1222

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