The Connecting Rod,piston, cataloged under National Stock Number 4310-00-752-3747, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor. Government technical data includes 24 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-752-3747 |
| Primary Part Number | 6439HPX |
| Item Name | Connecting Rod,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor |
| Status | ACTIVE |
| Shaft Connecting End Hole Inside Diameter | 1.865 INCHES NOMINAL IN |
| End Thickness | 0.878 INCHES NOMINAL IN |
| Body Width at Piston Connecting End | 0.855 INCHES NOMINAL IN |
| Body Width at Shaft Connecting End | 0.950 INCHES NOMINAL IN |
| Shaft Connecting End Lubrication Drill Feature | INCLUDED |
| Shaft Connecting End Bearing | INCLUDED |
| Shaft Connecting End Thickness | 1.186 INCHES NOMINAL IN |
| Center to Center Effective Length | 6.023 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | I-SECTION TYPE |
| Piston Connecting End Bearing | NOT INCLUDED |
| Piston Connecting End Lubrication Method | FULL FORCED-FEED |
| Shaft Connecting End Width | 3.000 INCHES NOMINAL IN |
| Body Thickness at Piston Connecting End | 0.646 INCHES NOMINAL IN |
| End Hole Inside Diameter | 0.874 INCHES NOMINAL IN |
| Body Thickness at Shaft Connecting End | 0.666 INCHES NOMINAL IN |
| Shaft Connecting End Style | AUTOMOTIVE STANDARD SPLIT BEARING 2 BOLT |
| Material | ALUMINUM ALLOY |
| Fabrication Method | FORGED |
| Piston End Connection Style | SMALL ENGINE AND AUTOMOTIVE STANDARD |
| Shaft Connecting End Bearing Replaceability | REPLACEABLE |
| Edge Radius | 0.694 INCHES NOMINAL IN |
| Piston Connecting End Lubrication Drill Feature | INCLUDED |
| Shaft Connecting End Lubrication Method | FORCED-FEED |
| Shaft Connecting End Edge Radius | 1.237 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 |
|---|---|
| 6439HPX PRIMARY | Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA) |
NSN 4310-00-752-3747 is a Connecting Rod,piston, manufactured by Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-752-3747 has 1 manufacturer part number on file: 6439HPX (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor).
Key specifications for 6439HPX: Shaft Connecting End Hole Inside Diameter: 1.865 INCHES NOMINAL IN; End Thickness: 0.878 INCHES NOMINAL IN; Body Width at Piston Connecting End: 0.855 INCHES NOMINAL IN; Body Width at Shaft Connecting End: 0.950 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.