The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-503-6531, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Bird-Johnson Propeller Company, Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-01-503-6531 |
| Primary Part Number | 112559001REV C ITEM 7 |
| Item Name | Hose Assembly,nonmetallic |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | Bird-Johnson Propeller Company, Llc |
| Status | ACTIVE |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 3.000 INCHES NOMINAL 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 |
|---|---|
| 112559001REV C ITEM 7 PRIMARY | Bird-Johnson Propeller Company, Llc (USA) |
| L-7-1-6 | Bird-Johnson Propeller Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 112559001 | D/9 Drawing number reference only Bird-Johnson Propeller Company, Llc |
NSN 4720-01-503-6531 is a Hose Assembly,nonmetallic, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-01-503-6531 has 2 manufacturer part numbers on file: 112559001REV C ITEM 7 (Bird-Johnson Propeller Company, Llc), L-7-1-6 (Bird-Johnson Propeller Company, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-503-6540. Verify interchangeability with system specifications before substitution.
Key specifications for 112559001REV C ITEM 7: Cross-Sectional Shape Style: ROUND; Inside Diameter: 3.000 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: HOPM ASSY; End Item Identification: HYDRAULIC POWER MOD. 2 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.