NSN 4730-01-143-7988 AN6289W4, AS4841, AS5179

Product Details | TUBE FITTING LOCKNUT

4730-01-143-7988 An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also LOCKNUT, PIPE; NUT (1), TUBE COUPLING and NUT (1), PLAIN, HEXAGON.

Part Alternates: AN6289W4, AS4841, AS5179, AS5179W04, 4730-01-143-7988, 01-143-7988, 4730011437988, 011437988

Pipe, Tubing, Hose, and Fittings | Hose, Pipe, Tube, Lubrication, and Railing Fittings

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
47	09 DEC 1982	01-143-7988	17645 ( LOCKNUT, TUBE FITTING )

Drawings & Photos | NSN 4730-01-143-7988

Part Number	Request Date	QTY	Origin
4730-01-143-7988	2025-07-209	453	DIBBS
4730-01-143-7988	2025-07-198	453	DIBBS
AS4841	2025-04-106	1	France
4730-01-143-7988	2023-03-86	410	DIBBS
4730-01-143-7988	2023-03-73	410	DIBBS
4730-01-143-7988	2020-09-257	2	Malaysia
AN6289W4	2020-09-254	2	Malaysia
4730-01-143-7988	2019-10-288	432	DIBBS
4730-01-143-7988	2019-07-192	13	United States
AN6289W4	2017-11-325	123	United States
4730-01-143-7988	2017-05-127	817	DIBBS
4730-01-143-7988	2017-04-93	365	DIBBS
4730-01-143-7988	2012-02-46	323	DIBBS
AS4841	2011-03-69	8
4730-01-143-7988	2010-02-36	493	DIBBS

Cross Reference | NSN 4730-01-143-7988

Part Number	Cage Code	Manufacturer
AN6289W4	88044	AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
AS4841	81343	SOCIETY OF AUTOMOTIVE ENGINEERS INC
AS5179	81343	SOCIETY OF AUTOMOTIVE ENGINEERS INC
AS5179W04	81343	SOCIETY OF AUTOMOTIVE ENGINEERS INC

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Related Products | NSN 4730-01-143-7988

4730-01-143-7995, 4730-01-143-8294, 4730-01-143-8295, 4730-01-143-8296, 4730-01-143-8297

Technical Data | NSN 4730-01-143-7988

Characteristic	Specifications
THREAD SERIES	UNJF
NOMINAL THREAD SIZE	0.438 INCHES
THREAD QUANTITY PER INCH	20
THREAD CLASS	3B
THREAD DIRECTION	RIGHT-HAND
MATERIAL	ALUMINUM ALLOY 7075 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/9,T73 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	ANODIZE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-A-8625,TYPE 2,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NUT STYLE	A391 TUBE FITTING LOCKNUT
NUT HEIGHT	0.281 INCHES NOMINAL
WIDTH ACROSS FLATS	0.688 INCHES NOMINAL
PACKING RECESS DIAMETER	0.576 INCHES NOMINAL
PACKING RECESS DEPTH	0.042 INCHES NOMINAL
FABRICATION METHOD	ANY ACCEPTABLE
NOMINAL TUBE OUTSIDE DIAMETER	0.250 INCHES
SPECIFICATION/STANDARD DATA	88044-AN6289 GOVERNMENT STANDARD

Restrictions/Controls & Freight Information | NSN 4730-01-143-7988

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:	A	Item does not contain precious metal
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	013540	ALUM NUTS
Less than car load rating
Less than truck load rating	Q	70.0
Water commodity Code	576	unknown
Originating Activity Code	AX	Defense Supply Center Columbus Columbus, OH 43216-5000
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 4730-01-143-7988

Category	Code	Description
Materiel Category and Inventory Manager	J	Ground Forces Support Materiel (DLA/GSA Items)
Appropriation and Budget Activity	2	Stock Fund Secondary Items
Management Inventory Segment	2	NONREPARABLE ITEMS (Exclusive of Insurance and Provisioning Items). This code will be used to identify items which are not reparable.
Specific Group/Generic Code	0	Medical Materiel
Weapons Systems/End Item or Homogeneous Group	00	DLA/GSA-Managed Items that cannot be identified to a specific Army Weapons Systems/End Item
Accounting Requirements Code	X	Expendable item. An item of Army property coded with an ARC of ?X? in the AMDF. Expendable items require no formal accountability after issue from a stock record account. Commercial and fabricated items similar to items coded ?X? in the AMDF are considered expendable items.
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DA	Department of the Army
Service Organization	A	U.S. Army
Reparability	Z	This is a nonreparable item. If condemned or economically unserviceable, then dispose at the level authorized replace the item.
Acquisition Advice Codes	D	DoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 EA : Each

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	D	DoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 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	D	DoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 EA : Each