NSN 4820-01-656-7441 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-656-7441. Manufacturer of record part number: 3453516.
Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
Valve Operation Method: AUTOMATIC
2 manufacturer part numbers on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense
Identification
NSN: 4820-01-656-7441
NIIN: 016567441
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 3453516
Manufacturer: Caterpillar Inc Div Caterpillar Defense
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-656-7441, 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 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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 4820-01-656-7441?
NSN 4820-01-656-7441 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 4820-01-656-7441?
NSN 4820-01-656-7441 has 2 manufacturer part numbers on file: 3453516 (Caterpillar Inc Div Caterpillar Defense), 345-3516 (Quinn Company).
What are the specifications of 3453516?
Key specifications for 3453516: Style Designator: CROSS; Media for Which Designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE; End Item Identification: COMPACT TRACK; Valve Operation Method: AUTOMATIC. 3 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-656-7441 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.