The Register,air, cataloged under National Stock Number 4520-01-504-9528, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-504-9528 |
| Primary Part Number | H643-1901-F40 |
| Item Name | Register,air |
| FSC / FSG | 4520 / 45 — No Item Name Available |
| Manufacturer | Electric Boat Corporation Div General Dynamics Electric Boat |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING |
| Shape | SQUARE |
| Grille Quantity | 1 |
| Deflector Blade Operating Method | ANY ACCEPTABLE |
| Frame Removability | ANY ACCEPTABLE |
| Blade Vertical Surface Axis Position | ANY ACCEPTABLE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| RC22 | Zf Industrieantriebe Witten Gmbh (DEU) |
| H643-1901-F40 PRIMARY | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 512-7067244 PRIMARY | Naval Sea Systems Command (USA) |
NSN 4520-01-504-9528 is a Register,air, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4520 (No Item Name Available). Status: active.
NSN 4520-01-504-9528 has 3 cross-referenced part numbers: RC22 (Zf Industrieantriebe Witten Gmbh), H643-1901-F40 (Electric Boat Corporation Div General Dynamics Electric Boat), 512-7067244 (Naval Sea Systems Command).
There are 7 known substitutes for 4520-01-504-9528: 3433-00-269-0454, 2940-00-376-8576, 5975-00-578-2859 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for H643-1901-F40: Overall Length: 6.000 INCHES NOMINAL IN; End Item Identification: LOS ANGELES CLASS SSN (688); VENTILATION - CREWS MESS & DRY PROVISIONS; MODULE CONTROL; Material: STEEL CORROSION RESISTING; Shape: SQUARE. 10 total characteristics are documented in the Federal Logistics Information System.