Product Details | UNION NUT

4730-01-521-6976 An internally threaded nut which has an internal seat or shoulder designed to engage the nut retaining flange of a union tailpiece. The threaded portion is used to engage the thread piece of a union, union elbor or the like. Excludes NUT (1), TUBE COUPLING.202109000004730000000

Part Alternates: 6394149 FIND 004, 6394149FIND004, 950N4NAB, 950N-4-NAB, 4730-01-521-6976, 01-521-6976, 4730015216976, 015216976

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

Supply Group (FSG) NSN Assign. NIIN
47 30 JUN 2004 01-521-6976

Drawings & Photos | NSN 4730-01-521-6976


Demand History | NSN 4730-01-521-6976

Part Number Request Date QTY Origin
950N-4-NAB 2024-03-88 8 DIBBS
950N-4-NAB 2024-03-85 4 DIBBS
4730-01-521-6976 2018-03-81 8 DIBBS
4730-01-521-6976 2017-10-284 8 DIBBS
4730-01-521-6976 2017-09-271 8 DIBBS

Cross Reference | NSN 4730-01-521-6976

Part Number Cage Code Manufacturer
6394149 FIND 004 53711 NAVAL SEA SYSTEMS COMMAND
950N-4-NAB 99565 ADMIRAL VALVE, LLC DBA CPV MANUFACTURING

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Technical Data | NSN 4730-01-521-6976

Characteristic Specifications
THREAD SERIES UN
NOMINAL THREAD SIZE 0.563 INCHES
THREAD QUANTITY PER INCH 18
THREAD CLASS 3B
THREAD TOLERANCE CLASS ANY ACCEPTABLE
THREAD PITCH DIAMETERS ANY ACCEPTABLE
THREAD DIRECTION RIGHT-HAND
MATERIAL COPPER ALLOY OVERALL
HARDNESS RATING ANY ACCEPTABLE
NUT STYLE A371 HEXAGON
SHOULDER WIDTH ANY ACCEPTABLE
NUT HEIGHT 0.438 INCHES NOMINAL
WIDTH ACROSS FLATS 1.063 INCHES NOMINAL
SMALLEST INSIDE DIAMETER 0.250 INCHES NOMINAL
SHOULDER STEP WIDTH ANY ACCEPTABLE
SHOULDER SEAT DIAMETER 0.563 INCHES NOMINAL
TEMP RATING -20.0 DEG FAHRENHEIT MINIMUM AND 275.0 DEG FAHRENHEIT MAXIMUM
MAXIMUM WORKING PRESSURE RATING AND SERVICE FOR WHICH DESIGNED 6000.0 POUNDS PER SQUARE INCH OIL
SPECIAL FEATURES O-RING MATERIAL DETERMINES TEMPERATURE RANGE; USED TO ATTACH TAILPIECE TO A THREADED PIECE
III END ITEM IDENTIFICATION TUBE ASSEMBLY, L.P. AIR GAGE PANEL
III PART NAME ASSIGNED BY CONTROLLING AGENCY NUT,UNION

Restrictions/Controls & Freight Information | NSN 4730-01-521-6976

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem 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:0Represents 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 093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3)
Less than car load rating
Less than truck load rating W Rating Variable
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 4730-01-521-6976

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesJNOT 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 CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each