NSN 5310-00-279-4423 HW496604, HW49660-4, ST3M426C4M

Product Details | DOUBLE HEXAGON EXTENDED WASHER SELF-LOCKING NUT

5310-00-279-4423 A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Part Alternates: HW496604, HW49660-4, ST3M426C4M, TLN1002CD34, TLN1002CD3-4, 10121248 , 5310-00-279-4423, 00-279-4423, 5310002794423, 002794423

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
53	08 AUG 1973	00-279-4423	29729 ( NUT, SELF-LOCKING, EXTENDED WASHER, DOUBLE HEXAGON )

Drawings & Photos | NSN 5310-00-279-4423

Part Number	Request Date	QTY	Origin
5310-00-279-4423	2025-03-90	240	Singapore
HW49660-4	2019-03-90	13535	DIBBS
TLN1002CD3-4	2019-03-90	13535	DIBBS
5310-00-279-4423	2017-11-333	30766	DIBBS
5310-00-279-4423	2017-09-264	64050	US
5310-00-279-4423	2017-09-262	64050	DIBBS
5310-00-279-4423	2017-05-151	27360	DIBBS
5310-00-279-4423	2017-02-43	36688	DIBBS
5310-00-279-4423	2016-12-348	36506	DIBBS
5310-00-279-4423	2016-09-272	34334	DIBBS
HW496604	2015-01-27	1615	United States
ST3M426C4M	2015-01-27	1615	United States
TLN1002CD34	2015-01-27	1615	United States
5310-00-279-4423	2011-04-109	100	US
5310-00-279-4423	2009-09-271	11833	DIBBS

Cross Reference | NSN 5310-00-279-4423

Part Number	Cage Code	Manufacturer
HW49660-4	15653	ALCOA GLOBAL FASTENERS, INC.
ST3M426C4M	76301	BOEING COMPANY, THE DBA BOEING
TLN1002CD3-4	17446	HUCK INTERNATIONAL, INC. DBA ALCOA FASTENING SYSTEMS
TLN1002CD3-4	27624	SPS TECHNOLOGIES, LLC DBA PB FASTENERS
TLN1002CD3-4	56878	SPS TECHNOLOGIES, LLC DBA AEROSPACE DIVISION
TLN1002CD3-4	59563	REID PRODUCTS INC. DBA REID PRODUCTS
TLN1002CD3-4	80539	SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP
TLN1002CD3-4	97928	HUCK INTL INC
TLN1002CD3-4	C4293	ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH

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Related Products | NSN 5310-00-279-4423

5310-00-279-4425, 5310-00-279-4427, 5310-00-279-4436, 5310-00-279-4438, 5310-00-279-4443

Technical Data | NSN 5310-00-279-4423

Characteristic	Specifications
THREAD SERIES	UNJF
NOMINAL THREAD SIZE	0.250 INCHES
THREAD QUANTITY PER INCH	28
THREAD CLASS	3B
THREAD DIRECTION	RIGHT-HAND
MATERIAL	IRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING	NOT RATED
NUT STYLE	A293 DOUBLE HEXAGON
WASHER OUTSIDE DIAMETER	0.460 INCHES MAXIMUM
OVERALL HEIGHT	0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM
WASHER THICKNESS	0.072 INCHES NOMINAL
WIDTH ACROSS FLATS	0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN
NUT COUNTERBORE DEPTH	0.067 INCHES MINIMUM AND 0.077 INCHES MAXIMUM NUT
COUNTERBORE DIAMETER	0.277 INCHES MINIMUM AND 0.287 INCHES MAXIMUM NUT
LUBRICATION	DRY FILM LUBRICANT
TEMP RATING	NOT RATED
SPECIFICATION/STANDARD DATA	76301-ST3M426 MANUFACTURERS STANDARD
MANUFACTURERS CODE	76301
MFR SOURCE CONTROLLING REFERENCE	ST3M426C4M

Restrictions/Controls & Freight Information | NSN 5310-00-279-4423

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	093486	BOLTS,NUTS OR SCREWS, NOI (SUB 3)
Less than car load rating
Less than truck load rating	W	Rating Variable
Water commodity Code	573	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 5310-00-279-4423

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	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	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	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	Q EA : Each