The Insert,engine Valve Seat, cataloged under National Stock Number 2805-00-752-1940, 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 8 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 2805-00-752-1940 |
| Primary Part Number | 7521940 |
| Item Name | Insert,engine Valve Seat |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Body Outside Diameter | 2.003 INCHES MINIMUM AND 2.004 INCHES MAXIMUM IN |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM BODY |
| Hardness Rating | 48.0 ROCKWELL C MAXIMUM FACE |
| Style Designator | PLAIN |
| Body Inside Diameter | 1.620 INCHES MINIMUM AND 1.630 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Seat Angle in Deg | 1.333 NOMINAL |
| Seating Surface Shape | ANGULAR |
| 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 |
|---|---|
| 7521940 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 670A4 | 5/9 Secondary reference Diamond Reo Truck Co |
| 913793 | 5/9 Secondary reference Sasco Inc Canadian Div |
| A1996 | 5/9 Secondary reference U.S. Government activity |
| A2256 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2805-00-752-1940 is a Insert,engine Valve Seat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-752-1940 has 1 manufacturer part number on file: 7521940 (U S Army Tank Automotive Command Amsta-Im-Mm).
5 possible matches (shared part number, not a government interchangeability claim): 6105-01-495-6106, 8455-01-577-0599, 8455-01-577-0817. Verify interchangeability with system specifications before substitution.
Key specifications for 7521940: Overall Height: 0.3437 INCHES MINIMUM AND 0.3487 INCHES MAXIMUM IN; Body Outside Diameter: 2.003 INCHES MINIMUM AND 2.004 INCHES MAXIMUM IN; Hardness Rating: 38.0 ROCKWELL C MINIMUM BODY; Hardness Rating: 48.0 ROCKWELL C MAXIMUM FACE. 8 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.