The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-371-4084, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Haldex Brake Products Corporation. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-371-4084 |
| Primary Part Number | N11075 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Haldex Brake Products Corporation |
| Status | ACTIVE |
| Outside Diameter | 0.938 INCHES NOMINAL IN |
| Style Designator | FLAT |
| Material Thickness | 0.020 INCHES NOMINAL IN |
| Center Hole Diameter | 0.250 INCHES NOMINAL IN |
| Material | RUBBER |
| 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 |
|---|---|
| N11075 PRIMARY | Haldex Brake Products Corporation (USA) |
| 968278R1 | Komatsu America Corp. (USA) |
| Reference | Meaning |
|---|---|
| N11075 | 5/9 Secondary reference Fruehauf Corp |
| 968278R1 | 5/9 Secondary reference Komatsu American Intl Co |
| M11075 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-00-371-4084 is a Diaphragm,valve,flat, manufactured by Haldex Brake Products Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-371-4084 has 2 manufacturer part numbers on file: N11075 (Haldex Brake Products Corporation), 968278R1 (Komatsu America Corp.).
1 possible match (shared part number, not a government interchangeability claim): 2040-00-393-3846. Verify interchangeability with system specifications before substitution.
Key specifications for N11075: Outside Diameter: 0.938 INCHES NOMINAL IN; Style Designator: FLAT; Material Thickness: 0.020 INCHES NOMINAL IN; Center Hole Diameter: 0.250 INCHES NOMINAL IN. 5 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.