The Cap,tube, cataloged under National Stock Number 4730-00-131-4946, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-131-4946 |
| Item Name | Cap,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | PRESSURE SEAL FLARED |
| Tube Outside Diameter for Which Designed | 2.500 INCHES NOMINAL IN |
| Style Designator | CAP, TUBE, FLARED |
| Material Document and Classification | QQ-A-225/4,T6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6,T6 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND INTERNAL |
| Nominal Thread Size | 3.000 INCHES INTERNAL IN |
| Seat Angle | 37.0 DEGREES |
| Specification/standard Data | 88044-AN929 GOVERNMENT STANDARD AND 81343-AS4841 GOVERNMENT STANDARD |
| Maximum Operating Temp | 225.0 FAHRENHEIT DEGF |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3B INTERNAL |
| Thread Quantity Per Inch | 12 INTERNAL |
| Material | ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) INTERNAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MILF5509 | 5/9 Secondary reference U.S. Government activity |
| 66D64056-40 | 5/9 Secondary reference U.S. Government activity |
| AN929-40 | 4/1 Identification reference U.S. Government activity |
| AS4841 | 5/9 Secondary reference U.S. Government activity |
| AS4841 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 4730-00-131-4946 is a Cap,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-00-293-7943. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-131-4946: Surface Treatment Document and Classification: MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Connection Style: PRESSURE SEAL FLARED; Tube Outside Diameter for Which Designed: 2.500 INCHES NOMINAL IN; Style Designator: CAP, TUBE, FLARED. 15 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.
NSN 4730-00-131-4946 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.