5305-01-300-3973, SCREW,CAP,HEXAGON HEAD

National Stock Number:
5305-01-300-3973

Federal Supply Class:
5305

National Item Identification Number:
013003973

Description:
SCREW,CAP,HEXAGON HEAD

Detail:
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.

Manufacturer Information:

3/8-16UNC-3A X 7/8	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
3/8-16UNC-3A X 7/8L1	03950	NAVAL INVENTORY CONTROL POINT MECHANICSBURG
GR500 (QQ-N-286)L1	03950	NAVAL INVENTORY CONTROL POINT MECHANICSBURG
MIL-DTL-1222	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
GR500 (QQ-N-286)	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MIL-DTL-1222 TY1 GR500L1	03950	NAVAL INVENTORY CONTROL POINT MECHANICSBURG
MIL-DTL-1222L1	03950	NAVAL INVENTORY CONTROL POINT MECHANICSBURG
MIL-S-1222 L1	03950	NAVAL INVENTORY CONTROL POINT MECHANICSBURG
TYPE 1 3/8-16UNC-3A X 7/8LGL1	03950	NAVAL INVENTORY CONTROL POINT MECHANICSBURG
MIL-S-1222	53711	NAVAL SEA SYSTEMS COMMAND
MIL-S-1222	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MIL-DTL-1222 TY1 GR500	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
TYPE 1 3/8-16UNC-3A X 7/8LG	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

Techincal Specification:

CRITICALITY CODE JUSTIFICATION	ZZZW
DEPARTURE FROM CITED DOCUMENT	MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
FEATURES PROVIDED	FINISHED HEAD
HARDNESS RATING	24.0 ROCKWELL C MINIMUM OVERALL
HEAD STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-N-286,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	NICKEL ALLOY OVERALL
NOMINAL THREAD DIAMETER	0.375 INCHES
NONDEFINITIVE SPEC/STD DATA	I TYPE
THREAD CLASS	3A
THREAD QUANTITY PER INCH	16
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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