PartsTable TECHNICAL DATA SHEET

NSN 4820-01-338-1878Government record, cited

Valve, Safety Relief4820-01-338-1878

NSN 4820-01-338-1878 · NIIN 013381878 · Part number 1209575H91

Komatsu America Corp. · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 0SAT8

Government record, cited

NSN 4820-01-338-1878 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-338-1878. Manufacturer of record part number: 1209575H91.

Also searched as 4820-01-338-1878 · 4820013381878 · NIIN 013381878 · 01-338-1878 · FSC 4820 Valves, Nonpowered · CAGE 0SAT8 · 1209575H91

Nearby stock numbers ← 4820-01-338-1877 Valve, Safety Relief · 4820-01-338-1885 Parts Kit, Pressure Regulating VA →

4820-01-338-1878 — Valves, Nonpowered

Features

Valve,safety Relief — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Komatsu America Corp.

Identification

NSN: 4820-01-338-1878
NIIN: 013381878
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1209575H91
Manufacturer: Komatsu America Corp.

General Description

The Valve,safety Relief, cataloged under National Stock Number 4820-01-338-1878, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Komatsu America 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Valve,safety Relief
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Komatsu America Corp. (CAGE 0SAT8)

Technical Specifications

Parameter	Value
NSN	4820-01-338-1878
Primary Part Number	1209575H91
Item Name	Valve,safety Relief
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Komatsu America 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)

Cross-Reference Index

Part Number	Manufacturer
1209575H91	Komatsu America Corp. (USA)

Reference documents

Reference	Meaning
1209575H91	3/9 Design control — primary reference Komatsu American Intl Co

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 4820-01-338-1878?

NSN 4820-01-338-1878 is a Valve,safety Relief, manufactured by Komatsu America Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-338-1878?

NSN 4820-01-338-1878 has 1 manufacturer part number on file: 1209575H91 (Komatsu America Corp.).

Is NSN 4820-01-338-1878 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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