Product Details | PISTON RING

4310-00-273-0326 A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes PACKING, PREFORMED; RETAINER, OIL SEAL; RETAINER, PACKING; RING, RETAINING; RING WIPER; and SEAL RING, METAL.20628050063Gasoline Reciprocating Engines, Except Aircraft; and Components28100068Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components28150029Diesel Engines and Components28250029Steam Turbines and Components30400042Miscellaneous Power Transmission Equipment43100028Compressors and Vacuum Pumps

Part Alternates: H18379, H18-379, H18380, H18-380, H204262, H204-262, 4310-00-273-0326, 00-273-0326, 4310002730326, 002730326

Pumps and Compressors | Compressors and Vacuum Pumps

Supply Group (FSG) NSN Assign. NIIN
43 01 JAN 1961 00-273-0326

Drawings & Photos | NSN 4310-00-273-0326


Cross Reference | NSN 4310-00-273-0326

Part Number Cage Code Manufacturer
H18-379 35301 DRESSER INDUSTRIES INC LEROI DIV
H18-380 35301 DRESSER INDUSTRIES INC LEROI DIV
H204-262 35301 DRESSER INDUSTRIES INC LEROI DIV

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Technical Data | NSN 4310-00-273-0326

Characteristic Specifications
MATERIAL IRON OVERALL
CROSS-SECTIONAL SHAPE STYLE A1 PLAIN RECTANGULAR, STRAIGHT FACE
JOINT STYLE 1 VERTICAL JOINT
RING STYLE 1 CONCENTRIC
RADIAL WALL THICKNESS 0.1320 INCHES NOMINAL
OVERALL WIDTH 0.1545 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM
OIL PASSAGE TYPE AND QUANTITY 1 GROOVE AND 6 SLOT OUTSIDE PERIPHERY
STANDARD BORE DIAMETER 3.000 INCHES

Restrictions/Controls & Freight Information | NSN 4310-00-273-0326

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 126700 PISTON RINGS,IRON
Less than car load rating P 77.5
Less than truck load rating M 85.0
Water commodity Code 594 unknown
Originating Activity Code XX
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 4310-00-273-0326

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 CodesXSEMIACTIVE ITEM-NO REPLACEMENT (NON-STOCKED ITEMS) A potentially inactive NSN which must be retained in the supply system as an item of supply because (1) stocks of the item are on hand or in use below the wholesale level and (2) the NSN is cited in equipment authorization documents TO & E, TA, TM, etc., or in-use assets are being reported. 1. Items are authorized for central procurement but not authorized for stockage at wholesale level. 2. Requisitions for in-use replacement will be authorized in accordance with individual Military Service directives. 3. Requisitions may be submitted as requirements generate. Repetitive demands may dictate an AAC change to permit wholesale stockage.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each