NSN 4820-01-166-8304 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-166-8304. Manufacturer of record part number: 6R3574.
Nearby stock numbers← 4820-01-166-8295 Parts Kit, Safety Relief Valve
·
4820-01-166-8314 Slide, Directional Control Linear →
4820-01-166-8304 — Valves, Nonpowered
Features
Valve,safety Relief — FSC 4820
1 manufacturer part number on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense
Identification
NSN: 4820-01-166-8304
NIIN: 011668304
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 6R3574
Manufacturer: Caterpillar Inc Div Caterpillar Defense
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-166-8304, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
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 4820-01-166-8304?
NSN 4820-01-166-8304 is a Valve,safety Relief, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-166-8304?
NSN 4820-01-166-8304 has 1 manufacturer part number on file: 6R3574 (Caterpillar Inc Div Caterpillar Defense).
What are the specifications of 6R3574?
Key specifications for 6R3574: End Item Identification: 3895-01-135-3703. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-166-8304 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.
What is the DEMIL code for NSN 4820-01-166-8304?
NSN 4820-01-166-8304 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.