The Ring,piston, cataloged under National Stock Number 4310-00-307-2878, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is The Boeing Company Div Defense. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-307-2878 |
| Primary Part Number | 68A450635-2001 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| FSC Application Data | ORIFICE SUPPORT TUBE,LANDING GEAR |
| Material Document and Classification | QQ-A-225/9,COND T73 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.2700 INCHES MINIMUM AND 0.2730 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 3.140 INCHES IN |
| Material | ALUMINUM ALLOY 7075 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 68A450635-2001 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 4310-00-307-2878 is a Ring,piston, manufactured by The Boeing Company Div Defense, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-307-2878 has 1 manufacturer part number on file: 68A450635-2001 (The Boeing Company Div Defense).
Key specifications for 68A450635-2001: FSC Application Data: ORIFICE SUPPORT TUBE,LANDING GEAR; Overall Width: 0.2440 INCHES MINIMUM AND 0.2470 INCHES MAXIMUM IN; Material Document and Classification: QQ-A-225/9,COND T73 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT 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.
NSN 4310-00-307-2878 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.