The Ring,piston, cataloged under National Stock Number 4310-01-153-7743, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-153-7743 |
| Primary Part Number | ST7M342-22 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| FSC Application Data | LAUNCHER,GUIDED MISSILE,AIRCRAFT LAU-116/A |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.0400 INCHES MINIMUM AND 0.0500 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 0.386 INCHES IN |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| ST7M342-22 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| J3-1043 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4310-01-153-7743 is a Ring,piston, manufactured by The Boeing Company Div Defense, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-153-7743 has 1 manufacturer part number on file: ST7M342-22 (The Boeing Company Div Defense).
Key specifications for ST7M342-22: FSC Application Data: LAUNCHER,GUIDED MISSILE,AIRCRAFT LAU-116/A; Overall Width: 0.0310 INCHES MINIMUM AND 0.0320 INCHES MAXIMUM IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL JOINT. 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.