The Connecting Rod,piston, cataloged under National Stock Number 4310-00-412-3604, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4310-00-412-3604 |
| Item Name | Connecting Rod,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Status | ACTIVE |
| Shaft Connecting End Hole Inside Diameter | 0.985 INCHES NOMINAL IN |
| End Thickness | 0.490 INCHES NOMINAL IN |
| Body Width at Piston Connecting End | 0.812 INCHES NOMINAL IN |
| Body Width at Shaft Connecting End | 1.038 INCHES NOMINAL IN |
| Shaft Connecting End Lubrication Drill Feature | NOT INCLUDED |
| Shaft Connecting End Bearing | INCLUDED |
| Bearing Replaceability | REPLACEABLE |
| Shaft Connecting End Thickness | 0.470 INCHES NOMINAL IN |
| Center to Center Effective Length | 4.916 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | I-SECTION TYPE |
| Piston Connecting End Bearing | INCLUDED |
| Piston Connecting End Lubrication Method | SPLASH |
| Body Thickness at Piston Connecting End | 0.430 INCHES NOMINAL IN |
| End Hole Inside Diameter | 0.488 INCHES NOMINAL IN |
| Body Thickness at Shaft Connecting End | 0.430 INCHES NOMINAL IN |
| Shaft Connecting End Style | PRESS SLEEVE |
| Material | ALUMINUM ALLOY |
| Fabrication Method | CAST |
| Piston End Connection Style | SMALL ENGINE AND AUTOMOTIVE STANDARD |
| Shaft Connecting End Bearing Replaceability | REPLACEABLE |
| Edge Radius | 0.544 INCHES NOMINAL IN |
| Piston Connecting End Lubrication Drill Feature | INCLUDED |
| Shaft Connecting End Lubrication Method | SPLASH |
| Shaft Connecting End Edge Radius | 1.228 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 |
| Reference | Meaning |
|---|---|
| 014030 | 3/2 Design control — primary reference U.S. Government activity |
| 014030 | 3/9 Design control — primary reference Air Dry Co of America, Llc |
| 7155-4960K | 5/9 Secondary reference Air Dry Co of America, Llc |
NSN 4310-00-412-3604 is a Connecting Rod,piston, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5961-00-892-1035, 5120-01-166-2076, 4310-01-460-3897. Verify interchangeability with system specifications before substitution.
Key specifications for 4310-00-412-3604: Shaft Connecting End Hole Inside Diameter: 0.985 INCHES NOMINAL IN; End Thickness: 0.490 INCHES NOMINAL IN; Body Width at Piston Connecting End: 0.812 INCHES NOMINAL IN; Body Width at Shaft Connecting End: 1.038 INCHES NOMINAL IN. 24 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.