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NSN 2810-01-293-7985, 2810012937985
RING,PISTON

Federal Supply Classification
FSC 2810 - Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components
National Item Identification Number
NIIN 012937985
Codification Country
United States
Item Name Code
INC 11459
Criticality
(X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code
(N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.
Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS® Summary

National Stock Number 2810-01-293-7985

National Stock Number (NSN) 2810-01-293-7985, or NIIN 012937985, (ring,piston) was assigned February 6, 1989 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over a year. There have been 4 contracts issued for this part number, with 4 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 4 different suppliers. The last contract numbers awarded were: SPE4A023P0311, SPE4A522F098E, SPE4A522F098E, SPM4A111G0010, SPM74001D9711. The total value of the awarded contracts has been US$ 132,687.81.

This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.

There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 02, 2006, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The rights to use the data needed to purchase this part from additional sources are not owned by the Government and cannot be purchased. Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 11459. [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.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 2810012937985 does not contain precious metals.

This NSN is associated to Schedule B 8409100080: parts for spark-ignition or compression-ignition internal combustion piston engines for use in aircraft except civil. The Schedule B End Use is listed as engines and turbines for military aircraft. NAICS classification category 336412: aircraft engine and engine parts manufacturing.

This information was last updated on .


Technical Characteristics

DISTANCE FROM PIN HOLE CENTER TO EDGE
(CRNR) 0.096 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLE
(AAGR) PLAIN RECTANGULAR, STRAIGHT FACE
JOINT STYLE
(ADTE) VERTICAL JOINT
OVERALL WIDTH
(ACXJ) 0.0440 INCHES MINIMUM AND 0.0450 INCHES MAXIMUM
RING STYLE
(ACXD) CONCENTRIC
PIN HOLE STYLE
(ACXL) ROUND PINHOLE AT JOINT
PINHOLE DIAMETER
(ACXU) 0.081 INCHES MINIMUM AND 0.086 INCHES MAXIMUM
RADIAL WALL THICKNESS
(ACXF) 0.1510 INCHES MINIMUM AND 0.1610 INCHES MAXIMUM
STANDARD BORE DIAMETER
(ACXZ) 3.244 INCHES
ERR DEFAULT
(CRNR) ERR DEFAULT

Manufacturer Part Numbers


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