Product Details | EXHAUST MUFFLER

2990-00-493-7378 00020215600030Airframe Structural Components29900045Miscellaneous Engine Accessories, Nonaircraft

Part Alternates: M17406IN, M1-740-6IN, 2990-00-493-7378, 00-493-7378, 2990004937378, 004937378

Engine Accessories | Miscellaneous Engine Accessories, Nonaircraft

Supply Group (FSG) NSN Assign. NIIN
29 16 FEB 1970 00-493-7378

Cross Reference | NSN 2990-00-493-7378

Part Number Cage Code Manufacturer
M1-740-6IN 23623 TELEDYNE SEACRAFT DIV OF TELEDYNE INDUSTRIES INC

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Technical Data | NSN 2990-00-493-7378

Characteristic Specifications
MATERIAL STEEL
SURFACE TREATMENT ANY ACCEPTABLE
DESIGN TYPE WET
COOLANT TYPE WATER
MUFFLER DESIGN MULTIPASS
BODY SHAPE ROUND
OVERALL LENGTH 37.500 INCHES NOMINAL
OVERALL DIAMETER 22.000 INCHES NOMINAL
OPERATING POSITION ANY ACCEPTABLE
INLET CONNECTION TYPE FLANGE 1ST CONNECTION FLANGE 2ND CONNECTION
INLET LOCATION ON SIDE 2.000 IN. FROM VERTICAL @CENTERLINE OF BODY,ON SIDE DIRECTLY OPPOSITE OTHER INLET
INLET PROJECTION LENGTH 4.000 INCHES NOMINAL 1ST CONNECTION 4.000 INCHES NOMINAL 2ND CONNECTION
INLET FLANGE SHAPE ROUND 1ST CONNECTION ROUND 2ND CONNECTION
INLET FLANGE MOUNTING PROVISION AND QUANTITY 6 HOLES 1ST CONNECTION 6 HOLES 2ND CONNECTION
INLET FLANGE MOUNTING HOLE DIAMETER 0.688 INCHES NOMINAL 1ST CONNECTION 0.688 INCHES NOMINAL 2ND CONNECTION
INLET FLANGE MOUNTING PROVISION SPACING 12.000 IN. BOLT CIRLE DIA 1ST INLET,12.000 IN. BOLT CIRCLE DIA 2ND INLET
OUTLET CONNECTION TYPE UNTHREADED
OUTLET LOCATION CENTRALLY LOCATED IN END SECTION OF BODY
OUTLET PROJECTION LENGTH ANY ACCEPTABLE
OUTLET OUTSIDE DIAMETER 8.625 INCHES NOMINAL
OUTLET INSIDE DIAMETER ANY ACCEPTABLE
WATER INLET CONNECTION TYPE UNTHREADED
WATER INLET LOCATION IN @END SECTION OF BODY,OPPOSITE OUTLET
WATER INLET PROJECTION LENGTH ANY ACCEPTABLE
WATER INLET OUTSIDE DIAMETER 1.000 INCHES NOMINAL
WATER INLET INSIDE DIAMETER ANY ACCEPTABLE
SPECIAL FEATURES 90.0 DEG ELBOW FOR OUTLET,MTG PLATES
MANUFACTURERS CODE 23623
DESIGN CONTROL REFERENCE M1-740-6IN

Restrictions/Controls & Freight Information | NSN 2990-00-493-7378

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:UPrecious metal type is unknown
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 125850 MUFFLER/EXHAUST SYS/PIPE/ETC
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 593 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 V Vehicles, machinery, shop and warehouse equipment and supplies, including special tools and equipment, ground servicing and special purpose vehicles, marine equipment and supplies, repair and maintenance parts for the above.
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 2990-00-493-7378

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 CodesLLOCAL PURCHASE # (NON-STOCKED ITEMS) Defense Logistics Agency (DLA)/GSA/Service/Agency-managed items authorized for local purchase as normal means of support at base, post, camp or station level. Item not stocked in wholesale distribution system of IMM/Service/Agency ICP.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each