NSN 4730-01-543-0356 MS21921V4P, AS18280, AS21921

Product Details | TUBE COUPLING NUT

4730-01-543-0356 An internally threaded nut which has either an internal seat or shoulder and/or is designed to be used with a ferrule, to mate with the seat of an externally threaded tube fitting to form a leakproof connection. Excludes NUT (1), TUBE COUPLING, REDUCING; and NUT (1), UNION.

Part Alternates: MS21921V4P, AS18280, AS21921, 4730-01-543-0356, 01-543-0356, 4730015430356, 015430356

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

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
47	31 MAY 2007	01-543-0356	03859 ( NUT, TUBE COUPLING )

Drawings & Photos | NSN 4730-01-543-0356

Part Number	Request Date	QTY	Origin
4730-01-543-0356	2025-11-317	60	US
4730-01-543-0356	2025-11-317	30	US
4730-01-543-0356	2025-07-209	869	DIBBS
4730-01-543-0356	2025-07-198	869	DIBBS
4730-01-543-0356	2025-02-51	658	DIBBS
MS21921V4P	2025-02-48	4	United States
4730-01-543-0356	2024-12-344	2	United States
4730-01-543-0356	2024-06-177	1001	DIBBS
4730-01-543-0356	2024-05-134	1200	DIBBS
4730-01-543-0356	2024-05-123	1200	DIBBS
4730-01-543-0356	2024-01-02	1303	DIBBS
4730-01-543-0356	2023-12-355	1303	DIBBS
4730-01-543-0356	2023-05-145	1365	DIBBS
4730-01-543-0356	2023-03-67	1090	DIBBS
4730-01-543-0356	2022-04-109	3	US
4730-01-543-0356	2022-04-108	3	us
4730-01-543-0356	2022-03-69	853	DIBBS
4730-01-543-0356	2019-10-291	20	us
4730-01-543-0356	2018-12-348	2044	DIBBS
4730-01-543-0356	2018-12-337	2044	DIBBS
MS21921V4P	2018-11-311	1	US
MS21921V4P	2018-05-124	50	US
4730-01-543-0356	2017-07-198	2667	DIBBS
4730-01-543-0356	2017-05-149	2536	DIBBS
4730-01-543-0356	2017-05-145	20	United States
MS21921V4P	2017-05-138	5	CA
4730-01-543-0356	2017-03-82	1	United States
AS18280	2014-10-280	1	US
4730-01-543-0356	2013-06-152	6	US
AS21921	2013-03-73	20	US
AS21921	2013-03-73	50	US
AS21921	2013-03-73	100	US
AS21921	2013-03-73	20	US
AS21921	2013-03-73	50	US
AS21921	2013-03-73	100	US
MS21921V4P	2012-03-62	1000	US
4730-01-543-0356	2012-02-55	173	DIBBS
4730-01-543-0356	2011-11-306	1400	DIBBS
4730-01-543-0356	2011-01-07	903	DIBBS
4730-01-543-0356	2010-12-343	918	DIBBS
4730-01-543-0356	2010-07-182	1139	DIBBS
AS21921	2010-04-95	4	Seychelles
4730-01-543-0356	2010-04-92	1819	DIBBS
4730-01-543-0356	2010-01-26	940	DIBBS
4730-01-543-0356	2009-11-317	192	DIBBS
4730-01-543-0356	2009-10-303	787	DIBBS
4730-01-543-0356	2009-10-296	393	DIBBS
4730-01-543-0356	2009-09-261	744	DIBBS
4730-01-543-0356	2009-05-128	816	DIBBS
4730-01-543-0356	2009-04-107	209	DIBBS

Cross Reference | NSN 4730-01-543-0356

Part Number	Cage Code	Manufacturer
AS18280	81343	SOCIETY OF AUTOMOTIVE ENGINEERS INC
AS21921	81343	SOCIETY OF AUTOMOTIVE ENGINEERS INC
MS21921V4P	81343	SOCIETY OF AUTOMOTIVE ENGINEERS INC

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Related Products | NSN 4730-01-543-0356

4730-01-543-0361, 4730-01-543-0367, 4730-01-543-0370, 4730-01-543-0372, 4730-01-543-0407

Technical Data | NSN 4730-01-543-0356

Characteristic	Specifications
THREAD SERIES	UNJF
NOMINAL THREAD SIZE	0.438 INCHES
THREAD QUANTITY PER INCH	20
THREAD CLASS	3B
THREAD DIRECTION	RIGHT-HAND
MATERIAL	STEEL OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
NUT STYLE	A350 TUBE COUPLING
NUT HEIGHT	0.710 INCHES MINIMUM AND 0.730 INCHES MAXIMUM
WIDTH ACROSS FLATS	0.562 INCHES NOMINAL
LENGTH TO SHOULDER	0.537 INCHES MINIMUM AND 0.557 INCHES MAXIMUM
SMALLEST INSIDE DIAMETER	0.300 INCHES MINIMUM AND 0.305 INCHES MAXIMUM
SEAT ANGLE	45.0 DEGREES NOMINAL
FABRICATION METHOD	ANY ACCEPTABLE
NOMINAL TUBE OUTSIDE DIAMETER	0.250 INCHES
SPECIAL FEATURES	CORROSION RESISTANT STEEL (15-5) W/ CADMIUM PLATING
SPECIFICATION/STANDARD DATA	81343 - AS21921 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
III PART NAME ASSIGNED BY CONTROLLING AGENCY	NUT,SLEEVE COUPLING,FLARELESS

Restrictions/Controls & Freight Information | NSN 4730-01-543-0356

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
Electro-static Discharge Susceptible:	A	No known Electrostatic Discharge (ESD) or Electromagnetic Interference (EMI) sensitivity
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.
Automatic Data Processing Equipment:	0	Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)

Category	Code	Description
NMF Description	051420	CONDUITS,O/T EARTHEN:PIPE FITTINGS
Less than car load rating
Less than truck load rating	W	Rating Variable
Water commodity Code	736	unknown
Originating Activity Code	GX	HQ Defense Logistics Agency, Enterprise Business Systems Fort Belvoir, VA 22060
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 4730-01-543-0356

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.
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
Stores Account Code	1	Marine Corps Stock Fund Account Item.
Materiel Management Code	B	All CommoditiesDefense Logistics Agency, (DLA,)
Echelon Management Code	2	ICP/DSSC Marine Corps-managed Recoverability Code D items and Defense Logistics Agency (DLA)/TACOM/GSA) items which the integrated manager has not decontrolled.
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DM	U.S. Marine Corps
Service Organization	M	U.S. Marine Corps
Reparability	Z	Nonreparable item. When unserviceable, condemn and dispose at the level indicated by the first digit of the maintenance code.
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