The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-678-0287, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is General Regulator Corp. Dba Accudriv. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-678-0287 |
| Primary Part Number | 1842-12 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | General Regulator Corp. Dba Accudriv |
| Status | ACTIVE |
| Outside Diameter | 2.250 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC |
| Hole Diameter | 0.188 INCHES NOMINAL IN |
| Bolt Circle Diameter | 1.812 INCHES NOMINAL IN |
| Material Thickness | 0.005 INCHES NOMINAL IN |
| Bolt Hole Quantity | 12 |
| Style Designator | FLAT |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-678-0287 is a Diaphragm,valve,flat, manufactured by General Regulator Corp. Dba Accudriv, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-678-0287 has 3 cross-referenced part numbers: 1842-12 (General Regulator Corp. Dba Accudriv), 81653 (General Regulator Corp. Dba Accudriv), 1891-12 (General Regulator Corp. Dba Accudriv).
There is 1 known substitute for 4820-00-678-0287: 5120-01-598-3580. Verify interchangeability with system specifications before substitution.
Key specifications for 1842-12: Outside Diameter: 2.250 INCHES NOMINAL IN; Material: RUBBER SYNTHETIC; Hole Diameter: 0.188 INCHES NOMINAL IN; Bolt Circle Diameter: 1.812 INCHES NOMINAL IN. 7 total characteristics are documented in the Federal Logistics Information System.