The Hose,air Duct, cataloged under National Stock Number 4720-01-112-1842, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is B & B Hose & Rubber Co., Inc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-01-112-1842 |
| Primary Part Number | YWBB35D50 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | B & B Hose & Rubber Co., Inc |
| Status | ACTIVE |
| Measuring Method and Length | 600.000 INCHES NOMINAL OVERALL IN |
| Connection Style | ROUND BOTH ENDS |
| Connection Type | SOFT BOTH ENDS |
| Style Designator | HELICALLY WOUND CONTINOUS WIRE SUPPORTED |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.250 INCHES NOMINAL IN |
| Features Provided | SCUFF STRIP |
| Inside Diameter | 3.500 INCHES NOMINAL FIRST END IN |
| End Overall Length | 10.000 INCHES NOMINAL BOTH ENDS IN |
| End Inside Diameter | 3.500 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 |
|---|---|
| YWBB35D50 PRIMARY | B & B Hose & Rubber Co., Inc (USA) |
| 64A92C937-2 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| HRC1001-50 PRIMARY | Hampton Rubber Company (USA) |
| 1237H-50 PRIMARY | Arvico Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1388C103-50 | 5/9 Secondary reference Aero Energy Systems Inc |
| 64A92C937 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 748034AA0600 | C/1 Advisory reference — outside the item-of-supply concept Danfoss Power Solutions II, Llc |
| 748034AA0600 | 5/9 Secondary reference Durodyne Inc. |
| 1388C103 | 5/9 Secondary reference Aero Energy Systems Inc |
NSN 4720-01-112-1842 is a Hose,air Duct, manufactured by B & B Hose & Rubber Co., Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-112-1842 has 4 manufacturer part numbers on file: YWBB35D50 (B & B Hose & Rubber Co., Inc), 64A92C937-2 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), HRC1001-50 (Hampton Rubber Company), 1237H-50 (Arvico Corporation).
Key specifications for YWBB35D50: Measuring Method and Length: 600.000 INCHES NOMINAL OVERALL IN; Connection Style: ROUND BOTH ENDS; Connection Type: SOFT BOTH ENDS; Style Designator: HELICALLY WOUND CONTINOUS WIRE SUPPORTED. 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.