The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-176-2995, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ahf Valves (australia) Pty Ltd. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-176-2995 |
| Primary Part Number | 694004 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ahf Valves (australia) Pty Ltd |
| Status | ACTIVE |
| Outside Diameter | 5.125 INCHES NOMINAL IN |
| Style Designator | FLAT |
| Material Thickness | 0.055 INCHES NOMINAL IN |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 4.631 INCHES NOMINAL IN |
| Center Hole Diameter | 0.215 INCHES NOMINAL IN |
| Material | RUBBER |
| Hole Diameter | 0.184 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 |
|---|---|
| 694004 | Ahf Valves (australia) Pty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| 694004 | 3/9 Design control — primary reference Oil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc |
NSN 4820-01-176-2995 is a Diaphragm,valve,flat, manufactured by Ahf Valves (australia) Pty Ltd, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-176-2995 has 1 manufacturer part number on file: 694004 (Ahf Valves (australia) Pty Ltd).
Key specifications for 694004: Outside Diameter: 5.125 INCHES NOMINAL IN; Style Designator: FLAT; Material Thickness: 0.055 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.