The Pin,piston, cataloged under National Stock Number 2805-00-529-8233, 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 Cummins Power Generation Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-529-8233 |
| Primary Part Number | 2121 |
| Item Name | Pin,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Cummins Power Generation Inc. |
| Status | ACTIVE |
| FSC Application Data | ENGINE,GASOLINE,NONAIRCRAFT |
| Body Style | CHAMFERED ENDS |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1117 ASSN STD SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.75000 INCHES MINIMUM AND 0.75020 INCHES MAXIMUM IN |
| End Chamfer Angle in Deg | 45.0 |
| Body Length | 2.4375 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Material | STEEL COMP 1117 |
| Metallic Hardness Rating | 62.0 MINIMUM ROCKWELL C AND 70.0 MAXIMUM ROCKWELL C |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2121 PRIMARY | Cummins Power Generation Inc. (USA) |
| P724 | Eaton Corp Dba Eaton Aerospace Jackson (USA) |
| Reference | Meaning |
|---|---|
| 28-2121 | 5/9 Secondary reference Cummins Power Generation Inc. |
| 112-0010 | 5/9 Secondary reference Cummins Power Generation Inc. |
| W9Z22 | 5/9 Secondary reference Mcquay-Norris Inc Oem Div an Skf Industries Co |
| 112-10 | 5/9 Secondary reference Cummins Power Generation Inc. |
| 8409835 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 112A10 | 5/9 Secondary reference Cummins Power Generation Inc. |
NSN 2805-00-529-8233 is a Pin,piston, manufactured by Cummins Power Generation Inc., classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-529-8233 has 2 manufacturer part numbers on file: 2121 (Cummins Power Generation Inc.), P724 (Eaton Corp Dba Eaton Aerospace Jackson).
5 possible matches (shared part number, not a government interchangeability claim): 5940-01-107-9588, 4810-01-178-0432, 5331-01-204-2027. Verify interchangeability with system specifications before substitution.
Key specifications for 2121: FSC Application Data: ENGINE,GASOLINE,NONAIRCRAFT; Body Style: CHAMFERED ENDS; Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1117 ASSN STD SINGLE MATERIAL RESPONSE; Outside Diameter: 0.75000 INCHES MINIMUM AND 0.75020 INCHES MAXIMUM IN. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.