NSN 2805-00-526-1640 · NIIN 005261640 · Part number 5261640
U S Army Tank Automotive Command Amsta-Im-Mm · FSC 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components · FSG 28 — Engines, Turbines, and Components · CAGE 19207
Government record, cited
NSN 2805-00-526-1640 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-526-1640. Manufacturer of record part number: 5261640.
Also searched as2805-00-526-1640 ·
2805005261640 ·
NIIN 005261640 ·
00-526-1640 ·
FSC 2805 Gasoline Reciprocating Engines, Except Aircraft; and Components · CAGE 19207 · 5261640
Cross-Sectional Shape Style: INSIDE COUNTERBORE, STRAIGHT FACE
Joint Style: VERTICAL JOINT
Radial Wall Thickness: 0.1600 INCHES MINIMUM AND 0.1700 INCHES MAXIMUM IN
Ring Style: CONCENTRIC
Standard Bore Diameter: 3.500 INCHES IN
Material: STEEL AND CARBON OVERALL
1 manufacturer part number on file
Identification
NSN: 2805-00-526-1640
NIIN: 005261640
FSC: 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components
FSG: 28 — Engines, Turbines, and Components
Primary part number: 5261640
Manufacturer: U S Army Tank Automotive Command Amsta-Im-Mm
General Description
The Ring,piston, cataloged under National Stock Number 2805-00-526-1640, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
U S Army Tank Automotive Command Amsta-Im-Mm (USA)
No interchangeability data on file.
Other items in FSC 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2805-00-000-4022
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2805-00-001-0029
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2805-00-001-3527
2805-00-001-3527 · Item name not on file
2805-00-001-3844
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2805-00-001-6575
RING SET,PISTON
Frequently Asked Questions
What is NSN 2805-00-526-1640?
NSN 2805-00-526-1640 is a Ring,piston, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
What part numbers are listed for NSN 2805-00-526-1640?
NSN 2805-00-526-1640 has 1 manufacturer part number on file: 5261640 (U S Army Tank Automotive Command Amsta-Im-Mm).
What are the specifications of 5261640?
Key specifications for 5261640: Overall Width: 0.0770 INCHES MINIMUM AND 0.0780 INCHES MAXIMUM IN; Cross-Sectional Shape Style: INSIDE COUNTERBORE, STRAIGHT FACE; Joint Style: VERTICAL JOINT; Radial Wall Thickness: 0.1600 INCHES MINIMUM AND 0.1700 INCHES MAXIMUM IN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 2805-00-526-1640 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.