NSN 4730-01-520-3268 BACN10DU4, 01-520-3268, 015203268

Product Details | TUBE FITTING LOCKNUT

4730-01-520-3268 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: BACN10DU4, 4730-01-520-3268, 01-520-3268, 4730015203268, 015203268

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

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
47	07 MAY 2004	01-520-3268	17645 ( LOCKNUT, TUBE FITTING )

Drawings & Photos | NSN 4730-01-520-3268

Part Number	Request Date	QTY	Origin
BACN10DU4	2025-10-295	14	DIBBS
BACN10DU4	2025-02-51	14	DIBBS
BACN10DU4	2024-10-291	7	DIBBS
BACN10DU4	2024-01-08	168	DIBBS
BACN10DU4	2023-12-362	168	DIBBS
BACN10DU4	2023-10-292	4	DIBBS
BACN10DU4	2023-10-276	137	DIBBS
BACN10DU4	2023-08-229	36	DIBBS
BACN10DU4	2023-06-172	166	DIBBS
BACN10DU4	2023-04-107	98	DIBBS
BACN10DU4	2023-04-96	98	DIBBS
BACN10DU4	2019-08-241	44	DIBBS
BACN10DU4	2019-07-206	38	DIBBS
BACN10DU4	2019-04-115	5	DIBBS
4730-01-520-3268	2018-07-192	5	DIBBS
4730-01-520-3268	2017-10-282	2	DIBBS
4730-01-520-3268	2017-09-260	3	DIBBS
4730-01-520-3268	2016-11-308	3	DIBBS
4730-01-520-3268	2015-09-252	1	DIBBS
4730-01-520-3268	2015-08-237	1	DIBBS
4730-01-520-3268	2015-08-230	1	DIBBS
4730-01-520-3268	2015-08-216	1	DIBBS
4730-01-520-3268	2015-05-142	2	DIBBS
4730-01-520-3268	2015-05-131	2	DIBBS
4730-01-520-3268	2010-11-333	10	DIBBS
4730-01-520-3268	2010-09-268	1	DIBBS
4730-01-520-3268	2010-09-253	3	DIBBS
4730-01-520-3268	2009-07-187	10	DIBBS

Cross Reference | NSN 4730-01-520-3268

Part Number	Cage Code	Manufacturer
BACN10DU4	59680	B. & E. MANUFACTURING CO., INC.
BACN10DU4	81205	THE BOEING COMPANY DBA BOEING

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Related Products | NSN 4730-01-520-3268

4730-01-520-3279, 4730-01-520-3307, 4730-01-520-3329, 4730-01-520-3330, 4730-01-520-3529

Technical Data | NSN 4730-01-520-3268

Characteristic	Specifications
THREAD DIRECTION	RIGHT-HAND
MATERIAL	STEEL COMP 633 OVERALL
NUT STYLE	A391 TUBE FITTING LOCKNUT
NUT HEIGHT	0.281 INCHES NOMINAL
WIDTH ACROSS FLATS	0.688 INCHES NOMINAL
PACKING RECESS DIAMETER	0.080 INCHES NOMINAL
PACKING RECESS DEPTH	0.042 INCHES NOMINAL
NOMINAL TUBE OUTSIDE DIAMETER	0.250 INCHES
SPECIAL FEATURES	END ITEM - STABILIZER TRIM ASSY B-52; DWING NAME IS NUT, RECESSED UNIVERSAL; DRILLED FOR 2 LOCKWIRE HOLES.
MANUFACTURERS CODE	81205
DESIGN CONTROL REFERENCE	BACN10DU4

Restrictions/Controls & Freight Information | NSN 4730-01-520-3268

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.
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
No Freight Information

Management | NSN 4730-01-520-3268

Air Force

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	J	NOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 EA : Each