The Connecting Rod,piston, cataloged under National Stock Number 2805-00-752-1957, 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 27 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-752-1957 |
| Primary Part Number | 7521957 |
| Item Name | Connecting Rod,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Shaft Connecting End Hole Inside Diameter | 2.325 INCHES NOMINAL IN |
| End Thickness | 1.403 INCHES MINIMUM AND 1.409 INCHES MAXIMUM IN |
| Body Width at Piston Connecting End | 1.015 INCHES NOMINAL IN |
| Body Width at Shaft Connecting End | 1.205 INCHES NOMINAL IN |
| Shaft Connecting End Lubrication Drill Feature | INCLUDED |
| Strength Rating | ERR-060 |
| End Width | 3.875 INCHES NOMINAL IN |
| Shaft Connecting End Bearing | NOT INCLUDED |
| Bearing Replaceability | REPLACEABLE |
| Shaft Connecting End Thickness | 1.612 INCHES MINIMUM AND 1.614 INCHES MAXIMUM IN |
| Center to Center Effective Length | 7.248 INCHES MINIMUM AND 7.252 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | I-SECTION TYPE |
| Piston Connecting End Bearing | INCLUDED |
| Piston Connecting End Lubrication Method | SPLASH |
| Shaft Connecting End Width | 3.835 INCHES NOMINAL IN |
| Body Thickness at Piston Connecting End | 0.770 INCHES NOMINAL IN |
| End Hole Inside Diameter | 2.333 INCHES NOMINAL IN |
| Body Thickness at Shaft Connecting End | 0.805 INCHES NOMINAL IN |
| Shaft Connecting End Style | AUTOMOTIVE STANDARD SPLIT BEARING 2 BOLT |
| Material | STEEL |
| Fabrication Method | FORGED |
| Piston End Connection Style | DELTA WING SHORT BORE |
| Edge Radius | 2.876 INCHES NOMINAL IN |
| Metallic Hardness Rating | 229.0 MINIMUM BRINELL TUNGSTEN CARBIDE AND 269.0 MAXIMUM BRINELL TUNGSTEN CARBIDE |
| Piston Connecting End Lubrication Drill Feature | INCLUDED |
| Shaft Connecting End Lubrication Method | FULL FORCED-FEED |
| Shaft Connecting End Edge Radius | 1.630 INCHES NOMINAL IN |
| 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 |
|---|---|
| 7521957 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 1283A3 | 3/9 Design control — primary reference Diamond Reo Truck Co |
| 913356 | 5/9 Secondary reference Sasco Inc Canadian Div |
NSN 2805-00-752-1957 is a Connecting Rod,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.
NSN 2805-00-752-1957 has 1 manufacturer part number on file: 7521957 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7521957: Shaft Connecting End Hole Inside Diameter: 2.325 INCHES NOMINAL IN; End Thickness: 1.403 INCHES MINIMUM AND 1.409 INCHES MAXIMUM IN; Body Width at Piston Connecting End: 1.015 INCHES NOMINAL IN; Body Width at Shaft Connecting End: 1.205 INCHES NOMINAL IN. 27 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.