The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-533-9873, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Lockheed Martin Corporation. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4720-01-533-9873 |
| Primary Part Number | LA-AS621-04-0163 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Measuring Method and Length | 16.375 INCHES NOMINAL OVERALL IN |
| Temp Rating | -65.0 FAHRENHEIT AND 400.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Minimum Inside Bending Radius | 3.000 INCHES IN |
| Connection Style | SWIVEL NUT, FLARELESS FIRST END |
| End Connection Design | STRAIGHT FIRST END |
| Layer Composition and Location | OUTER LAYER BRAIDED CORROSION RESISTANT STEEL WIRE |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.420 INCHES NOMINAL IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Seat Angle | 12.0 DEGREES FIRST END |
| Specification/standard Data | 81343-AS621 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Inside Diameter | 0.236 INCHES NOMINAL IN |
| Inside Surface Condition | SMOOTH |
| Hydrostatic Test Pressure | 6000.0 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3B FIRST END |
| Burst Test Pressure | 12000.0 POUNDS PER SQUARE INCH LBS |
| Outer Covering Environmental Protection | CORROSION RESISTANT AND ETHYLENE GLYCOL RESISTANT AND FUEL RESISTANT AND OIL RESISTANT AND SOLVENT RESISTANT AND HEAT RESISTANT AND VIBRATION RESISTANT |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| 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 |
| Part Number | Manufacturer |
|---|---|
| AS621-04-0163 | Sae International Dba Sae International (USA) |
| LA-AS621-04-0163 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| AS621-04-0163 | 5/9 Secondary reference U.S. Government activity |
NSN 4720-01-533-9873 is a Hose Assembly,nonmetallic, manufactured by Lockheed Martin Corporation, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-533-9873 has 2 manufacturer part numbers on file: AS621-04-0163 (Sae International Dba Sae International), LA-AS621-04-0163 (Lockheed Martin Corporation).
Key specifications for LA-AS621-04-0163: Measuring Method and Length: 16.375 INCHES NOMINAL OVERALL IN; Temp Rating: -65.0 FAHRENHEIT AND 400.0 FAHRENHEIT SINGLE RESPONSE DEGF; Minimum Inside Bending Radius: 3.000 INCHES IN; Connection Style: SWIVEL NUT, FLARELESS FIRST END. 21 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 4720-01-533-9873 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.