The Hose Assembly,duplex,air-Breathi, cataloged under National Stock Number 4720-00-052-5599, is classified within Federal Supply Class 4720 (Hose and Flexible Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is R.e. Darling Co., Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4720-00-052-5599 |
| Primary Part Number | REDAR-A10566-01 |
| Item Name | Hose Assembly,duplex,air-Breathi |
| FSC / FSG | 4720 / 47 — Hose and Flexible Tubing |
| Manufacturer | R.e. Darling Co., Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | SILICONE RUBBER TUBE; CRER WIRE REINFORCED; BRAIDED FABRIC COVER; CONSISTING TWO HOSE ASSEMBLY,0.250 IN. ID; 0.625 IN. OD; FIRST ASSEMBLY 31.000 IN. LG WITH 1 EA QUICK DISCONNECT P/N REDAR-C10052-7; 1 EA FEMALE PIN AN818-4D; SECOND ASSEMBLY 21.000 IN. LG WITH 1 EA QUICK DISCONNECT PIN REDAR-C10590-1; 1 EA MALE PIN MS33656-4; HOSE ASSEMBLIES JOINED TOGETHER BY A BAND 0.625 IN. W; 1.750 IN. LG 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 |
|---|---|
| REDAR-A10566-01 PRIMARY | R.e. Darling Co., Inc. (USA) |
| 12081-2 PRIMARY | Conax Florida Corporation (USA) |
| Reference | Meaning |
|---|---|
| 12081-2 | 5/9 Secondary reference American Safety Flight Systems Inc |
| REDAR-A10566-1 | 5/9 Secondary reference R.e. Darling Co., Inc. |
| 31C1343-2 | 3/2 Design control — primary reference U.S. Government activity |
| REDAR-A10566 | D/9 Drawing number reference only R.e. Darling Co., Inc. |
NSN 4720-00-052-5599 is a Hose Assembly,duplex,air-Breathi, manufactured by R.e. Darling Co., Inc., classified under FSC 4720, Hose and Flexible Tubing. Status: active.
NSN 4720-00-052-5599 has 2 manufacturer part numbers on file: REDAR-A10566-01 (R.e. Darling Co., Inc.), 12081-2 (Conax Florida Corporation).
1 possible match (shared part number, not a government interchangeability claim): 2520-00-591-7954. Verify interchangeability with system specifications before substitution.
Key specifications for REDAR-A10566-01: General Characteristics Item Description: SILICONE RUBBER TUBE; CRER WIRE REINFORCED; BRAIDED FABRIC COVER; CONSISTING TWO HOSE ASSEMBLY,0.250 IN. ID; 0.625 IN. OD; FIRST ASSEMBLY 31.000 IN. LG WITH 1 EA QUICK DISCONNECT P/N REDAR-C10052-7; 1 EA FEMALE PIN AN818-4D; SECOND ASSEMBLY 21.000 IN. LG WITH 1 EA QUICK DISCONNECT PIN REDAR-C10590-1; 1 EA MALE PIN MS33656-4; HOSE ASSEMBLIES JOINED TOGETHER BY A BAND 0.625 IN. W; 1.750 IN. LG IN. 1 specification is 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.