The Ring,piston, cataloged under National Stock Number 4310-00-407-8368, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Federal-Mogul Corporation Dba Federal-Mogul Div Fp Diesel. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-407-8368 |
| Primary Part Number | K512231 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Federal-Mogul Corporation Dba Federal-Mogul Div Fp Diesel |
| Status | ACTIVE |
| Cross-Sectional Shape Style | STRAIGHT FACE, DOUBLE SCRAPER |
| Joint Style | VERTICAL JOINT |
| Oil Passage Type and Quantity | 1 GROOVE TOP |
| Radial Wall Thickness | 0.1562 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 3.875 INCHES IN |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| FP5102648 | Federal-Mogul Corporation Dba Federal-Mogul Div Fp Diesel (USA) |
| K512231 PRIMARY | Federal-Mogul Corporation Dba Federal-Mogul Div Fp Diesel (USA) |
| K-5122321 | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| MILE11276 | 4/1 Identification reference U.S. Government activity |
| 2815004078368 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| PC5122321 | 5/9 Secondary reference Power Components (deutschland) Gmbh |
| K-5122321 | 5/9 Secondary reference Korody-Colyer Corp a Cr Industries Co |
| QPL11276 | 5/1 Secondary reference U.S. Government activity |
| 5122321 | 5/9 Secondary reference Rolls-Royce Solutions America Inc |
| 2815004078368 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 4310-00-407-8368 is a Ring,piston, manufactured by Federal-Mogul Corporation Dba Federal-Mogul Div Fp Diesel, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-407-8368 has 3 manufacturer part numbers on file: FP5102648 (Federal-Mogul Corporation Dba Federal-Mogul Div Fp Diesel), K512231 (Federal-Mogul Corporation Dba Federal-Mogul Div Fp Diesel), K-5122321 (Hatch & Kirk, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-329-5018. Verify interchangeability with system specifications before substitution.
Key specifications for K512231: Overall Width: 0.0625 INCHES NOMINAL IN; Cross-Sectional Shape Style: STRAIGHT FACE, DOUBLE SCRAPER; Joint Style: VERTICAL JOINT; Oil Passage Type and Quantity: 1 GROOVE TOP. 7 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.