The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-633-8478, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-633-8478 |
| Primary Part Number | 7550478-26-29XX-XXXXA020-24 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P9290 SYSTEM CERTIFICATION PROCEDURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS AND REQUIRES CLEANING, PACKING, AND MARKING IAW MIL-STD-1622 OR MIL-STD-1330 AS DEEMED APPLICABLE; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICALS AS DIFFERENTIATED BY SPECIAL TEST FEATURES |
| Criticality Code Justification | ZZZY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 7550478-26-29XX-XXXXA020-24 | Naval Sea Systems Command (USA) |
| 9323D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 26-29XX-XXXXA020-024D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0002-26-29XX-XXXXA020-24 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 9323 | Tescom Corp Dba Tescom Div Tescom (USA) |
| G547-0002-26-29XX-XXXXA020-24D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 26-29XX-XXXXA020-024 | Tescom Corp Dba Tescom Div Tescom (USA) |
| 7550478-26-29XX-XXXXA020-24D0 | Naval Inventory Control Point Mechanicsburg (USA) |
NSN 4820-01-633-8478 is a Diaphragm,valve,flat, manufactured by Naval Sea Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-633-8478 has 8 cross-referenced part numbers: 7550478-26-29XX-XXXXA020-24 (Naval Sea Systems Command), 9323D0 (Naval Inventory Control Point Mechanicsburg), 26-29XX-XXXXA020-024D0 (Naval Inventory Control Point Mechanicsburg), G547-0002-26-29XX-XXXXA020-24 (Electric Boat Corporation Div General Dynamics Electric Boat), 9323 (Tescom Corp Dba Tescom Div Tescom) and 3 more.
There are 9 known substitutes for 4820-01-633-8478: 5120-00-090-4401, 2940-00-363-7770, 3040-00-674-5701 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 7550478-26-29XX-XXXXA020-24: Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P9290 SYSTEM CERTIFICATION PROCEDURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS AND REQUIRES CLEANING, PACKING, AND MARKING IAW MIL-STD-1622 OR MIL-STD-1330 AS DEEMED APPLICABLE; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICALS AS DIFFERENTIATED BY SPECIAL TEST FEATURES; Criticality Code Justification: ZZZY. 2 total characteristics are documented in the Federal Logistics Information System.