PartsTable TECHNICAL DATA SHEET

NSN 4820-01-233-6642Government record, cited

Valve, Relief, Pressure and Temper4820-01-233-6642

NSN 4820-01-233-6642 · NIIN 012336642 · Part number 5486645 NO.37

Naval Sea Systems Command · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 53711

Government record, cited

NSN 4820-01-233-6642 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-233-6642. Manufacturer of record part number: 5486645 NO.37.

Also searched as 4820-01-233-6642 · 4820012336642 · NIIN 012336642 · 01-233-6642 · FSC 4820 Valves, Nonpowered · CAGE 53711 · 5486645 NO.37 · 19-80-0533

Nearby stock numbers ← 4820-01-233-6632 Valve, Check · 4820-01-233-6683 Disk, Valve →

4820-01-233-6642 — Valves, Nonpowered

Features

Valve,relief,pressure and Temper — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Naval Sea Systems Command

Identification

NSN: 4820-01-233-6642
NIIN: 012336642
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 5486645 NO.37
Manufacturer: Naval Sea Systems Command

General Description

The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-233-6642, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Valve,relief,pressure and Temper
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Naval Sea Systems Command (CAGE 53711)

Technical Specifications

Parameter	Value
NSN	4820-01-233-6642
Primary Part Number	5486645 NO.37
Item Name	Valve,relief,pressure and Temper
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Naval Sea Systems Command
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	Y

Cross-Reference Index

Part Number	Manufacturer
5486645 NO.37	Naval Sea Systems Command (USA)

Reference documents

Reference	Meaning
19-80-0533	3/2 Design control — primary reference U.S. Government activity

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-233-6642?

NSN 4820-01-233-6642 is a Valve,relief,pressure and Temper, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-233-6642?

NSN 4820-01-233-6642 has 1 manufacturer part number on file: 5486645 NO.37 (Naval Sea Systems Command).

Is NSN 4820-01-233-6642 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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