NSN 4820-01-154-8123 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-154-8123. Manufacturer of record part number: 03787.
Manufacturer of record: Amerex Corporation Dba Amerex Corp
Identification
NSN: 4820-01-154-8123
NIIN: 011548123
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 03787
Manufacturer: Amerex Corporation Dba Amerex Corp
General Description
The Head,safety,pressure Relief, cataloged under National Stock Number 4820-01-154-8123, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Amerex Corporation Dba Amerex Corp. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Head,safety,pressure Relief
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Amerex Corporation Dba Amerex Corp (CAGE 54905)
Technical Specifications
Parameter
Value
NSN
4820-01-154-8123
Primary Part Number
03787
Item Name
Head,safety,pressure Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Amerex Corporation Dba Amerex Corp
Status
ACTIVE
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 Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5133-01-178-5330POSSIBLE MATCH
BIT,AUGER
Possible match (shared part number)
6240-01-256-9868POSSIBLE MATCH
LAMP,INCANDESCENT
Possible match (shared part number)
7240-01-527-930405032POSSIBLE MATCH
FUNNEL
Possible match (shared part number)Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc
5325-01-681-514105032POSSIBLE MATCH
INSERT,SCREW THREAD
Possible match (shared part number)Howmet Global Fastening Systems Inc
NSN 4820-01-154-8123 is a Head,safety,pressure Relief, manufactured by Amerex Corporation Dba Amerex Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-154-8123?
NSN 4820-01-154-8123 has 1 manufacturer part number on file: 03787 (Amerex Corporation Dba Amerex Corp).
What NSN replaces 4820-01-154-8123?
4 possible matches (shared part number, not a government interchangeability claim): 5133-01-178-5330, 6240-01-256-9868, 7240-01-527-9304. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-154-8123 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.