NSN 4520-01-461-3221 · NIIN 014613221 · Part number 4FW-40-450A-GO-PF-60
Boiler & Heat Exchange Systems Inc. · FSC 4520 — Space and Water Heating Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal · CAGE 1HVH0
Government record, cited
NSN 4520-01-461-3221 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-461-3221. Manufacturer of record part number: 4FW-40-450A-GO-PF-60.
Also searched as4520-01-461-3221 ·
4520014613221 ·
NIIN 014613221 ·
01-461-3221 ·
FSC 4520 Space and Water Heating Equipment · CAGE 1HVH0 · 4FW-40-450A-GO-PF-60
Manufacturer of record: Boiler & Heat Exchange Systems Inc.
Identification
NSN: 4520-01-461-3221
NIIN: 014613221
FSC: 4520 — Space and Water Heating Equipment
FSG: 45 — Plumbing, Heating, and Waste Disposal
Primary part number: 4FW-40-450A-GO-PF-60
Manufacturer: Boiler & Heat Exchange Systems Inc.
General Description
The Boiler,heating,low Pressure, cataloged under National Stock Number 4520-01-461-3221, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Boiler & Heat Exchange Systems Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Other items in FSC 4520 — Space and Water Heating Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4520-00-000-0098
HEATING ELEMENT,ELECTRICAL,NONIM
4520-00-000-0099
4520-00-000-0099 · Item name not on file
4520-00-001-1240
4520-00-001-1240 · Item name not on file
4520-00-001-3518
HEATING ELEMENT,ELECTRICAL,NONIM
4520-00-001-3519
HEATING ELEMENT,ELECTRICAL,IMMER
4520-00-001-6052
HEATING ELEMENT,ELECTRICAL,NONIM
4520-00-001-6298
HEATING ELEMENT,ELECTRICAL,NONIM
4520-00-001-7726
HEATER,DUCT TYPE,PORTABLE
Frequently Asked Questions
What is NSN 4520-01-461-3221?
NSN 4520-01-461-3221 is a Boiler,heating,low Pressure, manufactured by Boiler & Heat Exchange Systems Inc., classified under FSC 4520, Space and Water Heating Equipment. Status: active.
What part numbers are listed for NSN 4520-01-461-3221?
NSN 4520-01-461-3221 has 1 manufacturer part number on file: 4FW-40-450A-GO-PF-60 (Boiler & Heat Exchange Systems Inc.).
What are the specifications of 4FW-40-450A-GO-PF-60?
Key specifications for 4FW-40-450A-GO-PF-60: Special Features: DESIGNED FOR NATURAL GAS OR FUEL OIL, PIPE SIZE 2 IN., MINIMUM PRESSURE 7.3 IN. W.C., GAS VENT 14 IN., DRY WEIGHT 8700 LBS., LENGTH 124 IN.,WIDTH 54 IN., HEIGHT 83 IN, HAS 60 PSI HEAD PRESSURE. LBS. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4520-01-461-3221 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.