PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6HS-RCSCap,flue

Masco Corp American Metal Products Co Div · NSN 4520-01-268-3955 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-268-3955 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-268-3955. Primary manufacturer part number: 6HS-RCS.
Features
  • Cap,flue — FSC 4520
  • Inside Diameter: 6.000 INCHES NOMINAL IN
  • Material: STEEL
  • 3 verified cross-references
  • Primary manufacturer: Masco Corp American Metal Products Co Div
Applications
  • Applications requiring Steel construction
General Description

The Cap,flue, cataloged under National Stock Number 4520-01-268-3955, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Masco Corp American Metal Products Co Div. Government technical data includes 2 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-01-268-3955
Primary Part Number6HS-RCS
Item NameCap,flue
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerMasco Corp American Metal Products Co Div
StatusACTIVE
Inside Diameter6.000 INCHES NOMINAL IN
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3110-00-690-1864SF5-6A-5 INTERCHANGEABLE
Bearing,roller,rod End
Rexnord Industries, Llc Div Aerosspace Bearing Operation
6685-00-698-6805T1050 INTERCHANGEABLE
Thermometer,self-Indicating,bime
Ametek, Inc. Div Aerospace & Defense
5315-00-738-05198502-1 INTERCHANGEABLE
Key,machine
Goodrich Aerospace Canada Ltd
3010-00-869-555343A758 INTERCHANGEABLE
Gearcase-Motor
Globe Motors, Inc. Dba Allient Dayton
5340-00-979-6523850-21 INTERCHANGEABLE
Standoff,threaded,spacing
Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service
2815-01-118-302168383 INTERCHANGEABLE
Piston,internal Combustion Engin
Perkins Engines Inc
5998-01-334-969985021-065 INTERCHANGEABLE
Holder,electrical Card
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
5998-01-373-488685021-043 INTERCHANGEABLE
Holder,electrical Card
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
5998-01-515-513785021-029 INTERCHANGEABLE
Holder,electrical Card
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
Cross-Reference Index
Part NumberManufacturer
85021 Alter Harry Co the Div of T E C (USA)
6HS-RCS PRIMARY Masco Corp American Metal Products Co Div (USA)
1767K34 Mcmaster-Carr Supply Co (USA)
Related Parts
3110-00-690-1864INTERCHANGEABLE
BEARING,ROLLER,ROD END
SF5-6A-5
6685-00-698-6805INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
T1050
5315-00-738-0519INTERCHANGEABLE
KEY,MACHINE
8502-1
3010-00-869-5553INTERCHANGEABLE
GEARCASE-MOTOR
43A758
5340-00-979-6523INTERCHANGEABLE
STANDOFF,THREADED,SPACING
850-21
2815-01-118-3021INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
68383
5998-01-334-9699INTERCHANGEABLE
HOLDER,ELECTRICAL CARD
85021-065
5998-01-373-4886INTERCHANGEABLE
HOLDER,ELECTRICAL CARD
85021-043
5998-01-515-5137INTERCHANGEABLE
HOLDER,ELECTRICAL CARD
85021-029

Frequently Asked Questions

What is NSN 4520-01-268-3955?

NSN 4520-01-268-3955 is a Cap,flue, manufactured by Masco Corp American Metal Products Co Div, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-268-3955?

NSN 4520-01-268-3955 has 3 cross-referenced part numbers: 85021 (Alter Harry Co the Div of T E C), 6HS-RCS (Masco Corp American Metal Products Co Div), 1767K34 (Mcmaster-Carr Supply Co).

What NSN replaces 4520-01-268-3955?

There are 9 known substitutes for 4520-01-268-3955: 3110-00-690-1864, 6685-00-698-6805, 5315-00-738-0519 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6HS-RCS?

Key specifications for 6HS-RCS: Inside Diameter: 6.000 INCHES NOMINAL IN; Material: STEEL; Special Features: GALVANIZED SURFACE;USED ON SPACE HEATER FLUE. 3 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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