PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

203028Cap,protective,dust and Moisture

Kidde Technologies, Inc Div Kidde Aerospace and Defense · NSN 5340-00-663-1918 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-663-1918 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-663-1918. Primary manufacturer part number: 203028.
Features
  • Cap,protective,dust and Moisture — FSC 5340
  • Overall Diameter: 2.880 INCHES NOMINAL IN
  • Round Cap Outside Surface Condition: SMOOTH
  • Tube Outside Diameter for Which Designed: 2.750 INCHES NOMINAL IN
  • Design Type: FRICTION
  • Inside Diameter Length: 1.500 INCHES NOMINAL IN
  • Material: PAPER
  • 2 verified cross-references
Applications
  • Applications requiring Paper construction
General Description

The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-00-663-1918, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Kidde Technologies, Inc Div Kidde Aerospace and Defense. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5340-00-663-1918
Primary Part Number203028
Item NameCap,protective,dust and Moisture
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerKidde Technologies, Inc Div Kidde Aerospace and Defense
StatusACTIVE
Overall Diameter2.880 INCHES NOMINAL IN
Round Cap Outside Surface ConditionSMOOTH
Tube Outside Diameter for Which Designed2.750 INCHES NOMINAL IN
Design TypeFRICTION
Inside Diameter Length1.500 INCHES NOMINAL IN
MaterialPAPER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-00-534-016910A9941 INTERCHANGEABLE
Seal Ring,metal
Napco International Llc Dba Napco International Inc
2520-00-628-3001203028 INTERCHANGEABLE
Ring Oil Seal
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
Cross-Reference Index
Part NumberManufacturer
203028 PRIMARY Kidde Technologies, Inc Div Kidde Aerospace and Defense (USA)
203028 Kidde-Fenwal, Llc (USA)
Related Parts
5330-00-534-0169INTERCHANGEABLE
SEAL RING,METAL
10A9941
2520-00-628-3001INTERCHANGEABLE
RING OIL SEAL
203028

Frequently Asked Questions

What is NSN 5340-00-663-1918?

NSN 5340-00-663-1918 is a Cap,protective,dust and Moisture, manufactured by Kidde Technologies, Inc Div Kidde Aerospace and Defense, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-663-1918?

NSN 5340-00-663-1918 has 2 cross-referenced part numbers: 203028 (Kidde Technologies, Inc Div Kidde Aerospace and Defense), 203028 (Kidde-Fenwal, Llc).

What NSN replaces 5340-00-663-1918?

There are 2 known substitutes for 5340-00-663-1918: 5330-00-534-0169, 2520-00-628-3001. Verify interchangeability with system specifications before substitution.

What are the specifications of 203028?

Key specifications for 203028: Overall Diameter: 2.880 INCHES NOMINAL IN; Round Cap Outside Surface Condition: SMOOTH; Tube Outside Diameter for Which Designed: 2.750 INCHES NOMINAL IN; Design Type: FRICTION. 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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