PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

671Breather

Protectoseal Co Container Div · NSN 2520-00-447-9584 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-00-447-9584 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-447-9584. Primary manufacturer part number: 671.
Features
  • Breather — FSC 2520
  • Thread Size and Series/type Designator: 111/2 NPT
  • Connection Type: THREADED
  • Outside Diameter: 3.375 INCHES MAXIMUM IN
  • 3 verified cross-references
  • Primary manufacturer: Protectoseal Co Container Div
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Breather, cataloged under National Stock Number 2520-00-447-9584, is classified within Federal Supply Class 2520 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Protectoseal Co Container Div. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2520-00-447-9584
Primary Part Number671
Item NameBreather
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerProtectoseal Co Container Div
StatusACTIVE
Thread Size and Series/type Designator111/2 NPT
Connection TypeTHREADED
Outside Diameter3.375 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-059-8905671 INTERCHANGEABLE
Lead,test
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5905-00-101-2769L50J5R0 INTERCHANGEABLE
Resistor,fixed,wire Wound
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5210-00-181-167711155206 INTERCHANGEABLE
Attachment,indicato
Us Army Aviation and Missile Command
3040-00-223-8073671 INTERCHANGEABLE
Breather
Protectoseal Co Container Div
5120-00-240-52325120-00-240-5232 INTERCHANGEABLE
Screwdriver,offset
General Services Administration Federal Supply Service
5325-00-276-4945 INTERCHANGEABLE
Cap,snap Fastener
5340-00-370-9679 INTERCHANGEABLE
Deflector,dirt and Liquid
4910-00-473-7550 INTERCHANGEABLE
Sling,final Drive
5999-00-679-3939671 INTERCHANGEABLE
Delay Line
Micro Networks Corporation
2835-00-870-9916671 INTERCHANGEABLE
Vent Plate
Protectoseal Co Container Div
Cross-Reference Index
Part NumberManufacturer
8004075 General Motors Corp Electro-Motive Div (USA)
671 PRIMARY Protectoseal Co Container Div (USA)
8004075 General Motors Corp (USA)
Related Parts
6625-00-059-8905INTERCHANGEABLE
LEAD,TEST
671
5905-00-101-2769INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
L50J5R0
5210-00-181-1677INTERCHANGEABLE
ATTACHMENT,INDICATO
11155206
3040-00-223-8073INTERCHANGEABLE
BREATHER
671
5120-00-240-5232INTERCHANGEABLE
SCREWDRIVER,OFFSET
5120-00-240-5232
5325-00-276-4945INTERCHANGEABLE
CAP,SNAP FASTENER
5340-00-370-9679INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
4910-00-473-7550INTERCHANGEABLE
SLING,FINAL DRIVE
5999-00-679-3939INTERCHANGEABLE
DELAY LINE
671
2835-00-870-9916INTERCHANGEABLE
VENT PLATE
671
5310-00-950-8267INTERCHANGEABLE
NUT,PLAIN,CLINCH
SN440-4
5330-01-124-6410INTERCHANGEABLE
GASKET
671

Frequently Asked Questions

What is NSN 2520-00-447-9584?

NSN 2520-00-447-9584 is a Breather, manufactured by Protectoseal Co Container Div, classified under FSC 2520 (No Item Name Available). Status: active.

What are the part numbers for NSN 2520-00-447-9584?

NSN 2520-00-447-9584 has 3 cross-referenced part numbers: 8004075 (General Motors Corp Electro-Motive Div), 671 (Protectoseal Co Container Div), 8004075 (General Motors Corp).

What NSN replaces 2520-00-447-9584?

There are 12 known substitutes for 2520-00-447-9584: 6625-00-059-8905, 5905-00-101-2769, 5210-00-181-1677 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 671?

Key specifications for 671: Thread Size and Series/type Designator: 111/2 NPT; End Item Identification: 14507318189; Connection Type: THREADED; Overall Height: 2.875 INCHES MAXIMUM IN. 6 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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