NSN 5305-00-054-4973 51B2343, 51B234-3, 00-054-4973

Product Details | SOCKET HEAD CAP SCREW

5305-00-054-4973 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.

Part Alternates: 51B2343, 51B234-3, 5305-00-054-4973, 00-054-4973, 5305000544973, 000544973

Hardware and Abrasives | Screws

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
53	01 JUN 1967	00-054-4973	16282 ( SCREW, CAP, SOCKET HEAD )

Drawings & Photos | NSN 5305-00-054-4973

Part Number	Request Date	QTY	Origin
5305-00-054-4973	2018-11-305	2243	DIBBS
5305-00-054-4973	2018-06-154	1733	DIBBS
5305-00-054-4973	2017-01-22	2400	DIBBS
51B2343	2015-02-55	40	United States
5305-00-054-4973	2014-02-48	1558	DIBBS
5305-00-054-4973	2013-03-67	1555	DIBBS
5305-00-054-4973	2012-08-227	700	US
51B234-3	2012-08-221	700
5305-00-054-4973	2012-06-159	1300	DIBBS
5305-00-054-4973	2012-05-146	245	DIBBS
5305-00-054-4973	2011-12-347	286	DIBBS
5305-00-054-4973	2010-05-126	2000	DIBBS
5305-00-054-4973	2010-04-112	839	DIBBS
5305-00-054-4973	2009-05-151	227	DIBBS
5305-00-054-4973	2009-04-107	202	DIBBS
5305-00-054-4973	2009-03-63	138	DIBBS

Cross Reference | NSN 5305-00-054-4973

Part Number	Cage Code	Manufacturer
51B234-3	06725	SPS TECHNOLOGIES LLC DBA AIR INDUSTRIES
51B234-3	06950	ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS
51B234-3	0JRC1	NORTHROP GRUMMAN TECHNICAL SERVICES, INC.
51B234-3	17446	HUCK INTERNATIONAL, INC. DBA ALCOA FASTENING SYSTEMS
51B234-3	27624	SPS TECHNOLOGIES, LLC DBA PB FASTENERS
51B234-3	73197	HI-SHEAR CORPORATION
51B234-3	76823	NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NORTHROP GRUMMAN AEROSPACE
51B234-3	80539	SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP
51B234-3	92215	ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS
51B234-3	L4528	LISI AEROSPACE CANADA CORP

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Related Products | NSN 5305-00-054-4973

5305-00-054-4976, 5305-00-054-4997, 5305-00-054-5011, 5305-00-054-5164, 5305-00-054-5165

Technical Data | NSN 5305-00-054-4973

Characteristic	Specifications
THREAD SERIES DESIGNATOR	UNF
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	28
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.316 INCHES MINIMUM
FASTENER LENGTH	0.503 INCHES NOMINAL
MATERIAL	STEEL OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
MINIMUM TENSILE STRENGTH	180000 POUNDS PER SQUARE INCH
HEAD STYLE	C50 FLAT COUNTERSUNK
HEAD DIAMETER	0.499 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE	D8 TORQUE SET
LOCKING FEATURE	PATCH OR STRIP THREADS
MANUFACTURERS CODE	76823
DESIGN CONTROL REFERENCE	51B234-3

Restrictions/Controls & Freight Information | NSN 5305-00-054-4973

Restrictions
Freight

Category	Code	Description
Shelf-Life Code:	0	Nondeteriorative
Hazardous Material Indicator Code	N	There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:	A	Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:	U	UNCLASSIFIED
Precious Metals Indicator Code:	U	Precious metal type is unknown
Criticality Code:	X	The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Category	Code	Description
NMF Description	093486	BOLTS,NUTS OR SCREWS, NOI (SUB 3)
Less than car load rating
Less than truck load rating	W	Rating Variable
Water commodity Code	713	unknown
Originating Activity Code	KZ	Defense Supply Center Philadelphia Philadelphia, PA 19101
Air Dimension Code	A	Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity	B	Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling	Z	No special handling required.
Special Handling Code	9	unknonwn
HAZMAT
Type of Cargo	Z	No special type of cargo code applicable

Management | NSN 5305-00-054-4973

Air Force
Navy

Category	Code	Description
Budget Code	9	General Support DIV57X4921.070:Air Force decentrally managed expense items (ERRC XB3, XF-3) with a unit cost of less than $250,000 that are requisitioned/procured at base (retail) level from DLA, GSA, Army, Navy, Depot Maintenance Service, Air Force Industrial Fund (AFMC), local manufacture and commercial vendors.
Price Validation	N	The current standard price in Catalog Management Data (CMD) has not analyzed or coded for LP/LM. The price has not been analyzed or reviewed for accuracy. ZOP or Standard price challenges are permissible, but must be supported with adequate justification. However, if coded for Local Purchase (LP) or Fabrication/Manufacture as indicated with an (LM) Acquisition Advice Code of ?L? or?F?,the case must be evaluated locally where purchased or fabricated.
Fund Code	SF	Stock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Materiel Management Aggregation Code	SX	SX:AF SICA RESIDUAL MMAC-OC-ALC
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DF	Department of the Air Force
Service Organization	F	U.S. Air Force
Reparability	N	Stock Fund (except Munitions)
Acquisition Advice Codes	Z	INSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	Q EA : Each

Category	Code	Description
Cognizance Codes	9B	Navy-owned stocks of DLA material Naval Inventory Control Point, Mechanicsburg
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DN	Department of the Navy
Service Organization	N	U.S. Navy
Acquisition Advice Codes	Z	INSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	Q EA : Each