FSC 4520 — Space and Water Heating Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal
Government record, cited
Also searched as4520-01-622-9686 ·
4520016229686 ·
NIIN 016229686 ·
01-622-9686 ·
FSC 4520 Space and Water Heating Equipment · 17-3-3745-1 · 17-3-3745
Nearby stock numbers← 4520-01-622-9654 Collar, Air Conditioning-Heating
·
4520-01-622-9694 Collar, Air Conditioning-Heating →
Features
Collar,air Conditioning-Heating — FSC 4520
Fitting Inside Diameter: 16.500 INCHES NOMINAL IN
Overall Diameter: 19.000 INCHES NOMINAL IN
Style Designator: ROUND
Material: ALUMINUM ALLOY
Fitting Overall Length: 0.500 INCHES NOMINAL IN
Identification
NSN: 4520-01-622-9686
NIIN: 016229686
FSC: 4520 — Space and Water Heating Equipment
FSG: 45 — Plumbing, Heating, and Waste Disposal
General Description
The Collar,air Conditioning-Heating, cataloged under National Stock Number 4520-01-622-9686, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4520-01-622-9686
Item Name
Collar,air Conditioning-Heating
FSC / FSG
4520 / 45 — Space and Water Heating Equipment
Status
ACTIVE
Fitting Inside Diameter
16.500 INCHES NOMINAL IN
Overall Diameter
19.000 INCHES NOMINAL IN
Style Designator
ROUND
Material
ALUMINUM ALLOY
Fitting Overall Length
0.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
17-3-3745-1
3/2Design control — primary reference
U.S. Government activity
17-3-3745
D/9Drawing number reference only
U.S. Government activity
No interchangeability data on file.
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 4520-01-622-9686?
NSN 4520-01-622-9686 is a Collar,air Conditioning-Heating, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
What are the specifications of 4520-01-622-9686?
Key specifications for 4520-01-622-9686: Fitting Inside Diameter: 16.500 INCHES NOMINAL IN; Overall Diameter: 19.000 INCHES NOMINAL IN; Style Designator: ROUND; Part Name Assigned by Controlling Agency: RING,RETAINER,BOOT,INLET AIR. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4520-01-622-9686 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.