The Hose Assembly,air Breathing, cataloged under National Stock Number 4720-01-349-9976, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Herbert Cooper Co Inc. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-349-9976 |
| Primary Part Number | HC208B72 |
| Item Name | Hose Assembly,air Breathing |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Herbert Cooper Co Inc |
| Status | ACTIVE |
| Measuring Method and Length | 72.000 INCHES NOMINAL OVERALL IN |
| Minimum Inside Bending Radius | 1.438 INCHES1.438 INCHES IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | THREADED FIRST END |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUNDROUND |
| Wall Thickness | 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 2 SIZE |
| End Overall Length | 0.875 INCHES NOMINAL BOTH ENDS IN |
| End Inside Diameter | 0.875 INCHES NOMINAL BOTH ENDS IN |
| 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 |
|---|---|
| HC208B72 PRIMARY | Herbert Cooper Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 51801-10 | 5/2 Secondary reference U.S. Government activity |
NSN 4720-01-349-9976 is a Hose Assembly,air Breathing, manufactured by Herbert Cooper Co Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-349-9976 has 1 manufacturer part number on file: HC208B72 (Herbert Cooper Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 5975-01-510-2914. Verify interchangeability with system specifications before substitution.
Key specifications for HC208B72: Measuring Method and Length: 72.000 INCHES NOMINAL OVERALL IN; Minimum Inside Bending Radius: 1.438 INCHES1.438 INCHES IN; Connection Style: ROUND BOTH ENDS; Connection Type: THREADED FIRST END. 10 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.