Valve, Breather4820-01-149-0766

NSN 4820-01-149-0766 · NIIN 011490766

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-149-0766 · 4820011490766 · NIIN 011490766 · 01-149-0766 · FSC 4820 Valves, Nonpowered · SM-B-500790 · 398287

Nearby stock numbers ← 4820-01-149-0708 Valve, Relief, Pressure and Temper · 4820-01-149-0819 →

4820-01-149-0766 — Valves, Nonpowered

Features

Valve,breather — FSC 4820
General Characteristics Item Description: AL ALY BODY; 1.000 IN. HEX; 0.375 IN. HIGH; 3/4-24 UNS-2A; FINISH MIL-F-14072; O-RING MIL-R-5847 CL1 GR50 A

Identification

NSN: 4820-01-149-0766
NIIN: 011490766
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Valve,breather, cataloged under National Stock Number 4820-01-149-0766, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.

Technical Specifications

Parameter	Value
NSN	4820-01-149-0766
Item Name	Valve,breather
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
General Characteristics Item Description	AL ALY BODY; 1.000 IN. HEX; 0.375 IN. HIGH; 3/4-24 UNS-2A; FINISH MIL-F-14072; O-RING MIL-R-5847 CL1 GR50 A

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5962-01-365-3842IS0120G POSSIBLE MATCH

MICROCIRCUIT,LINEAR

Possible match (shared part number)Burr-Brown Corp

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
SM-B-500790	5/2 Secondary reference U.S. Government activity
398287	3/2 Design control — primary reference U.S. Government activity

Related Parts

5962-01-365-3842POSSIBLE MATCH

MICROCIRCUIT,LINEAR

IS0120G

Frequently Asked Questions

What is NSN 4820-01-149-0766?

NSN 4820-01-149-0766 is a Valve,breather, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-149-0766?

1 possible match (shared part number, not a government interchangeability claim): 5962-01-365-3842. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-149-0766?

Key specifications for 4820-01-149-0766: General Characteristics Item Description: AL ALY BODY; 1.000 IN. HEX; 0.375 IN. HIGH; 3/4-24 UNS-2A; FINISH MIL-F-14072; O-RING MIL-R-5847 CL1 GR50 A. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-149-0766 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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