The Cap,tube, cataloged under National Stock Number 4730-01-338-2225, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-338-2225 |
| Primary Part Number | 7M7521-1 |
| Item Name | Cap,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE,2,CLASS2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | PLAIN (OPTIONAL END) |
| Tube Outside Diameter for Which Designed | 0.500 INCHES NOMINAL IN |
| Style Designator | CAP |
| Material Document and Classification | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND INTERNAL |
| Nominal Thread Size | 0.750 INCHES INTERNAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3B INTERNAL |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Thread Series Designator | UNF INTERNAL |
| 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 |
|---|---|
| 7M7521-1 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 7M7521 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 4730-01-338-2225 is a Cap,tube, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-338-2225 has 1 manufacturer part number on file: 7M7521-1 (The Boeing Company Div Defense).
Key specifications for 7M7521-1: Surface Treatment Document and Classification: MIL-A-8625,TYPE,2,CLASS2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: PLAIN (OPTIONAL END); Tube Outside Diameter for Which Designed: 0.500 INCHES NOMINAL IN; Style Designator: CAP. 11 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.