NSN 2520-00-455-9263 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-455-9263. Manufacturer of record part number: 8S5820.
Also searched as2520-00-455-9263 ·
2520004559263 ·
NIIN 004559263 ·
00-455-9263 ·
FSC 2520 Vehicular Power Transmission Components · CAGE 11083 · 8S5820
Thread Size and Series/type Designator: 1/4-18 NPT
4 manufacturer part numbers on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense
Identification
NSN: 2520-00-455-9263
NIIN: 004559263
FSC: 2520 — Vehicular Power Transmission Components
FSG: 25 — Vehicular Equipment Components
Primary part number: 8S5820
Manufacturer: Caterpillar Inc Div Caterpillar Defense
General Description
The Breather, cataloged under National Stock Number 2520-00-455-9263, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components 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 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
2520-00-455-9263
Primary Part Number
8S5820
Item Name
Breather
FSC / FSG
2520 / 25 — Vehicular Power Transmission Components
Manufacturer
Caterpillar Inc Div Caterpillar Defense
Status
ACTIVE
Connection Type
THREADED
Body Material
STEEL
Thread Size and Series/type Designator
1/4-18 NPT
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 2520 — Vehicular Power Transmission Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2520-00-000-3976
2520-00-000-3976 · Item name not on file
2520-00-000-8852
2520-00-000-8852 · Item name not on file
2520-00-000-9292
2520-00-000-9292 · Item name not on file
2520-00-001-0011
2520-00-001-0011 · Item name not on file
2520-00-001-3397
2520-00-001-3397 · Item name not on file
2520-00-001-3425
2520-00-001-3425 · Item name not on file
2520-00-001-3440
ROLLER,CENTER
2520-00-001-3441
2520-00-001-3441 · Item name not on file
Frequently Asked Questions
What is NSN 2520-00-455-9263?
NSN 2520-00-455-9263 is a Breather, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
What part numbers are listed for NSN 2520-00-455-9263?
NSN 2520-00-455-9263 has 4 manufacturer part numbers on file: 8S5820 (Caterpillar Inc Div Caterpillar Defense), 8S5820 (Hastings Deering (aust) Pty Ltd), 8S5820 (Westrac Pty Ltd), 8S5820 (William Adams Pty Ltd).
What are the specifications of 8S5820?
Key specifications for 8S5820: Overall Height: 1.312 INCHES MAXIMUM IN; Connection Type: THREADED; Body Material: STEEL; Special Features: ZINC PLATED,STEEL WOOL FILTERING ELEMENT. 3 specifications are documented in the U.S. Government catalog.
Is NSN 2520-00-455-9263 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.