The Insert,engine Valve Seat, cataloged under National Stock Number 2815-01-104-0181, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Deere & Company Dba Deere John Co. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-01-104-0181 |
| Primary Part Number | T20129 |
| Item Name | Insert,engine Valve Seat |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Deere & Company Dba Deere John Co |
| Status | ACTIVE |
| Body Outside Diameter | 0.500 INCHES NOMINAL IN |
| Hardness Rating | 60.0 ROCKWELL C MINIMUM OVERALL |
| Style Designator | PLAIN |
| Material | STEEL COMP 52100 OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| T20129 PRIMARY | Deere & Company Dba Deere John Co (USA) |
| Reference | Meaning |
|---|---|
| T20129 | 5/9 Secondary reference John Deere Construction & Forestry Company Div Direct Governmental Sales |
| T20129 | 5/9 Secondary reference Deere & Co |
NSN 2815-01-104-0181 is a Insert,engine Valve Seat, manufactured by Deere & Company Dba Deere John Co, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-104-0181 has 1 manufacturer part number on file: T20129 (Deere & Company Dba Deere John Co).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-167-6661. Verify interchangeability with system specifications before substitution.
Key specifications for T20129: Overall Height: 0.216 INCHES NOMINAL IN; Body Outside Diameter: 0.500 INCHES NOMINAL IN; Hardness Rating: 60.0 ROCKWELL C MINIMUM OVERALL; Style Designator: PLAIN. 5 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.