The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-455-8790, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-455-8790 |
| Primary Part Number | N508-7 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Outside Diameter | 8.000 INCHES NOMINAL IN |
| Style Designator | FLAT |
| Material Thickness | 0.129 INCHES NOMINAL IN |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 7.125 INCHES NOMINAL IN |
| Center Hole Diameter | 0.750 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC |
| Hole Diameter | 0.500 INCHES NOMINAL 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 |
|---|---|
| N-677 PIECE 7 | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| N508-7 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| B322661-72 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
NSN 4820-00-455-8790 is a Diaphragm,valve,flat, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-455-8790 has 3 manufacturer part numbers on file: N-677 PIECE 7 (Leslie Controls, Inc. Dba Leslie Controls Inc), N508-7 (Leslie Controls, Inc. Dba Leslie Controls Inc), B322661-72 (Leslie Controls, Inc. Dba Leslie Controls Inc).
Key specifications for N508-7: Outside Diameter: 8.000 INCHES NOMINAL IN; Style Designator: FLAT; Material Thickness: 0.129 INCHES NOMINAL IN; Bolt Hole Quantity: 8. 8 specifications are 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.