The Disk,valve, cataloged under National Stock Number 4820-01-042-0345, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-042-0345 |
| Primary Part Number | 169339-1 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.090 INCHES NOMINAL IN |
| Outside Diameter | 1.250 INCHES NOMINAL IN |
| Style Designator | SWING CHECK |
| Inside Diameter | 0.160 INCHES NOMINAL IN |
| Under Flange Height | 0.232 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 169339-1 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| Reference | Meaning |
|---|---|
| 169339 | D/9 Drawing number reference only Honeywell International Inc. Div Aerospace - Torrance |
| S8156K48-3 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
NSN 4820-01-042-0345 is a Disk,valve, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-042-0345 has 1 manufacturer part number on file: 169339-1 (Honeywell International Inc. Div Aerospace - Torrance).
4 possible matches (shared part number, not a government interchangeability claim): 6150-01-076-7922, 6150-01-275-5359, 6150-01-275-5360. Verify interchangeability with system specifications before substitution.
Key specifications for 169339-1: Flange Seat to Disk End Height: 0.090 INCHES NOMINAL IN; Outside Diameter: 1.250 INCHES NOMINAL IN; Style Designator: SWING CHECK; Inside Diameter: 0.160 INCHES NOMINAL IN. 6 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.