The Ring,piston, cataloged under National Stock Number 4310-01-042-4645, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Rix Industries. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-042-4645 |
| Primary Part Number | 18-A2169 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Rix Industries |
| Status | ACTIVE |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.0350 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | OXIDE OVERALL |
| Standard Bore Diameter | 0.688 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 |
|---|---|
| 18-A2169 PRIMARY | Rix Industries (USA) |
| Reference | Meaning |
|---|---|
| D952 | D/9 Drawing number reference only Rix Industries |
| D952ITEM28 | 5/9 Secondary reference Rix Industries |
NSN 4310-01-042-4645 is a Ring,piston, manufactured by Rix Industries, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-042-4645 has 1 manufacturer part number on file: 18-A2169 (Rix Industries).
Key specifications for 18-A2169: Overall Width: 0.1250 INCHES NOMINAL IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL JOINT; Radial Wall Thickness: 0.0350 INCHES NOMINAL IN. 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.