Valve, Safety Relief4820-01-573-0523

NSN 4820-01-573-0523 · NIIN 015730523 · Part number 9889K39

Mcmaster-Carr Supply Co · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 07BY4

Government record, cited

NSN 4820-01-573-0523 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-573-0523. Manufacturer of record part number: 9889K39.

Also searched as 4820-01-573-0523 · 4820015730523 · NIIN 015730523 · 01-573-0523 · FSC 4820 Valves, Nonpowered · CAGE 07BY4 · 9889K39

Nearby stock numbers ← 4820-01-573-0512 Valve, Ball · 4820-01-573-0539 Deck Box Operator, Valve →

4820-01-573-0523 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
Connection Style: PLAIN (HOSE) ALL ENDS
Connection Type: THREADED EXTERNAL PIPE ALL ENDS
Style Designator: ANGLE
Thread Direction: RIGHT-HAND ALL ENDS
Nominal Thread Size: 0.500 INCHES ALL ENDS IN
Media for Which Designed: AIR SINGLE RESPONSE
Material: COPPER ALLOY BODY

Identification

NSN: 4820-01-573-0523
NIIN: 015730523
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 9889K39
Manufacturer: Mcmaster-Carr Supply Co

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-573-0523, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 9 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-573-0523
Primary Part Number	9889K39
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Mcmaster-Carr Supply Co
Status	ACTIVE
Connection Style	PLAIN (HOSE) ALL ENDS
Connection Type	THREADED EXTERNAL PIPE ALL ENDS
Style Designator	ANGLE
Thread Direction	RIGHT-HAND ALL ENDS
Nominal Thread Size	0.500 INCHES ALL ENDS IN
Media for Which Designed	AIR SINGLE RESPONSE
Material	COPPER ALLOY BODY
Thread Series Designator	NPT ALL ENDS
Valve Operation Method	AUTOMATIC

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

Cross-Reference Index

Part Number	Manufacturer
9889K39 PRIMARY	Mcmaster-Carr Supply Co (USA)

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 4820-01-573-0523?

NSN 4820-01-573-0523 is a Valve,safety Relief, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-573-0523?

NSN 4820-01-573-0523 has 1 manufacturer part number on file: 9889K39 (Mcmaster-Carr Supply Co).

What are the specifications of 9889K39?

Key specifications for 9889K39: Connection Style: PLAIN (HOSE) ALL ENDS; Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Style Designator: ANGLE; Thread Direction: RIGHT-HAND ALL ENDS. 9 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-573-0523 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.

PartsTable Design LLC · partstable.com