The Seal,conical,flared Tube Fitting, cataloged under National Stock Number 4730-00-445-3903, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Del Aerospace Inc Dba Del Aerospace Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-445-3903 |
| Primary Part Number | DY90-C-4 |
| Item Name | Seal,conical,flared Tube Fitting |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Del Aerospace Inc Dba Del Aerospace Inc |
| Status | ACTIVE |
| Outside Diameter | 0.359 INCHES NOMINAL IN |
| Body Length | 0.073 INCHES NOMINAL IN |
| Seat Angle in Deg | 37.0 |
| Hose/tube Outside Diameter for Which Designed | 0.250 INCHES NOMINAL IN |
| Style Designator | SEAL |
| Material | COPPER ALLOY |
| Wall Thickness | 0.005 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| DY90-C-4 PRIMARY | Del Aerospace Inc Dba Del Aerospace Inc (USA) |
| VSF1015C4SP | Howmet Global Fastening Systems Inc Div Rosan / Eagle Products (USA) |
| VSF1015C4SP | Howmet Global Fastening Systems Inc Div Rosan Products (USA) |
| DY90-4 | Del Aerospace Inc Dba Del Aerospace Inc (USA) |
| 83-67020-004 | Hughes Missile Systems Co San Diego (USA) |
| VSF1015C4SP | Howmet Global Fastening Systems Inc Div Torrance Operations (USA) |
| 10639969-4 | General Dynamics Land Systems Canadacorp (CAN) |
NSN 4730-00-445-3903 is a Seal,conical,flared Tube Fitting, manufactured by Del Aerospace Inc Dba Del Aerospace Inc, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-445-3903 has 7 cross-referenced part numbers: DY90-C-4 (Del Aerospace Inc Dba Del Aerospace Inc), VSF1015C4SP (Howmet Global Fastening Systems Inc Div Rosan / Eagle Products), VSF1015C4SP (Howmet Global Fastening Systems Inc Div Rosan Products), DY90-4 (Del Aerospace Inc Dba Del Aerospace Inc), 83-67020-004 (Hughes Missile Systems Co San Diego) and 2 more.
There are 3 known substitutes for 4730-00-445-3903: 4730-00-839-1720, 4730-00-998-7372, 4730-01-090-7579. Verify interchangeability with system specifications before substitution.
Key specifications for DY90-C-4: Outside Diameter: 0.359 INCHES NOMINAL IN; Body Length: 0.073 INCHES NOMINAL IN; Seat Angle in Deg: 37.0; Hose/tube Outside Diameter for Which Designed: 0.250 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.