The Ring,piston, cataloged under National Stock Number 4310-01-454-3986, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-454-3986 |
| Primary Part Number | 595-6401057 ITEM 1 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | STEP JOINT |
| Radial Wall Thickness | 0.0040 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 6.716 INCHES IN |
| Material | PLASTIC POLYAMIDE NYLON AND COPPER ALLOY 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 |
|---|---|
| 6401057 | Naval Sea Systems Command (USA) |
| 595-6401057 ITEM 1 PRIMARY | Naval Sea Systems Command (USA) |
| T563-0571-001-7584 PRIMARY | John Crane, Inc (USA) |
| Reference | Meaning |
|---|---|
| 211042564 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| T568-0571-7584 | 5/9 Secondary reference John Crane, Inc |
| T568-0571-001-7584 | 3/9 Design control — primary reference John Crane, Inc |
NSN 4310-01-454-3986 is a Ring,piston, manufactured by Naval Sea Systems Command, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-454-3986 has 3 manufacturer part numbers on file: 6401057 (Naval Sea Systems Command), 595-6401057 ITEM 1 (Naval Sea Systems Command), T563-0571-001-7584 (John Crane, Inc).
Key specifications for 595-6401057 ITEM 1: Overall Width: 6.9950 INCHES NOMINAL IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: STEP JOINT; Radial Wall Thickness: 0.0040 INCHES NOMINAL IN. 6 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.