NSN 4820-01-565-3564 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-565-3564. Manufacturer of record part number: 251-3785.
Also searched as4820-01-565-3564 ·
4820015653564 ·
NIIN 015653564 ·
01-565-3564 ·
FSC 4820 Valves, Nonpowered · CAGE 11083 · 251-3785
Media for Which Designed: HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE
Valve Operation Method: AUTOMATIC
1 manufacturer part number on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense
Identification
NSN: 4820-01-565-3564
NIIN: 015653564
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 251-3785
Manufacturer: Caterpillar Inc Div Caterpillar Defense
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-565-3564, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 5 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.
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 4820-01-565-3564?
NSN 4820-01-565-3564 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 4820-01-565-3564?
NSN 4820-01-565-3564 has 1 manufacturer part number on file: 251-3785 (Caterpillar Inc Div Caterpillar Defense).
What are the specifications of 251-3785?
Key specifications for 251-3785: Connection Type: THREADED CARTRIDGE FIRST END; Style Designator: SCREW-IN CARTRIDGE; Disk Loading Method: SPRING; Special Features: CARTRIDGE TYPE VALVE; NEXT HIGHER ASSEMBLY: P/N 236-7614 VALVE GP, VIBRATORY, HYDRAULIC CONTROL. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-565-3564 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.