The Hose,air Duct, cataloged under National Stock Number 4720-00-438-6957, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Hbd Industries, Inc Div Hbd/thermoid Inc. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4720-00-438-6957 |
| Primary Part Number | AD777B16-10 |
| Item Name | Hose,air Duct |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Hbd Industries, Inc Div Hbd/thermoid Inc |
| Status | ACTIVE |
| Hose Weight | 7.488 OUNCES PER LINEAR FOOT OZ |
| Measuring Method and Length | 2.500 INCHES NOMINAL OVERALL IN |
| Connection Type | PLAIN FIRST END |
| Style Designator | SLEEVE SECTION |
| Cross-Sectional Shape Style | ROUND |
| Wall Thickness | 0.080 INCHES MAXIMUM IN |
| Operating Pressure | 15.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Features Provided | OZONE RESISTANT |
| Inside Diameter | 4.000 INCHES NOMINAL FIRST END IN |
| Material | PLASTIC POLYAMIDE NYLON AND RUBBER SILICONE CLASS Q ALL PLIES |
| 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 |
|---|---|
| AD777B16-10 PRIMARY | Hbd Industries, Inc Div Hbd/thermoid Inc (USA) |
| D4410A16-10 PRIMARY | Kirkhill, Inc. Dba Kirkhill Inc (USA) |
| Reference | Meaning |
|---|---|
| STSPH200B16-10 | 7/2 Vendor item drawing reference U.S. Government activity |
| FT2120A16-10 | 5/9 Secondary reference Automation Industries Inc Flexible Tubing Div |
NSN 4720-00-438-6957 is a Hose,air Duct, manufactured by Hbd Industries, Inc Div Hbd/thermoid Inc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-438-6957 has 2 manufacturer part numbers on file: AD777B16-10 (Hbd Industries, Inc Div Hbd/thermoid Inc), D4410A16-10 (Kirkhill, Inc. Dba Kirkhill Inc).
Key specifications for AD777B16-10: Hose Weight: 7.488 OUNCES PER LINEAR FOOT OZ; Measuring Method and Length: 2.500 INCHES NOMINAL OVERALL IN; Connection Type: PLAIN FIRST END; Style Designator: SLEEVE SECTION. 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.