The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-058-7334, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-058-7334 |
| Primary Part Number | 42512B |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S |
| Status | ACTIVE |
| Outside Diameter | 1.097 INCHES MINIMUM AND 1.107 INCHES MAXIMUM IN |
| Supplementary Features | PASSIVATED,QQ-P-35 |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE |
| Material Thickness | 0.002 INCHES MINIMUM AND 0.004 INCHES MAXIMUM IN |
| Material | STEEL COMP 347 |
| 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 |
|---|---|
| 42512B PRIMARY | Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S (USA) |
| 585184-2 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| Reference | Meaning |
|---|---|
| 585184-2 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell International |
NSN 4820-01-058-7334 is a Diaphragm,valve,flat, manufactured by Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-058-7334 has 2 manufacturer part numbers on file: 42512B (Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S), 585184-2 (Honeywell International Inc. Div Aerospace - Torrance).
Key specifications for 42512B: Outside Diameter: 1.097 INCHES MINIMUM AND 1.107 INCHES MAXIMUM IN; Supplementary Features: PASSIVATED,QQ-P-35; Material Document and Classification: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE; Material Thickness: 0.002 INCHES MINIMUM AND 0.004 INCHES MAXIMUM 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.