The Valve,vent, cataloged under National Stock Number 4820-01-087-3711, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-087-3711 |
| Primary Part Number | 103140-7-1 |
| Item Name | Valve,vent |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| Connection Style | INVERTED FLARE(TUBE) FIRST END |
| Connection Style | INVERTED FLARE(TUBE) SECOND END |
| Connection Type | THREADED INTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Style Designator | STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY. |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES SECOND END IN |
| Thread Direction | RIGHT-HAND SECOND END |
| Nominal Thread Size | 0.437 INCHES SECOND END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Seat Angle | 37.0 DEGREES SECOND END |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Thread Class | 3B SECOND END |
| Test Data Document | 36659-P-9009 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Material | MAGNESIUM BODY |
| Thread Series Designator | UNF SECOND END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 103140-7-1 PRIMARY | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| Reference | Meaning |
|---|---|
| 103140-7-1 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
| 644646-103 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4820-01-087-3711 is a Valve,vent, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-087-3711 has 1 manufacturer part number on file: 103140-7-1 (Honeywell International, Inc Div Aerospace-Tucson).
Key specifications for 103140-7-1: Connection Style: INVERTED FLARE(TUBE) FIRST END; Connection Style: INVERTED FLARE(TUBE) SECOND END; Connection Type: THREADED INTERNAL TUBE SECOND END; Connection Type: THREADED INTERNAL TUBE FIRST END. 15 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.