PartsTable TECHNICAL DATA SHEET
NSN 5342-00-442-0609Government record, cited

Cap Assembly, Duct5342-00-442-0609

NSN 5342-00-442-0609 · NIIN 004420609 · Part number D18D21
Grimes Aerospace Company · FSC 5342 — Hardware, Weapon System · FSG 53 — Hardware and Abrasives · CAGE 72914
Government record, cited
NSN 5342-00-442-0609 — this item is cataloged by the U.S. Government under National Stock Number 5342-00-442-0609. Manufacturer of record part number: D18D21.
Also searched as  5342-00-442-0609 · 5342004420609 · NIIN 004420609 · 00-442-0609 · FSC 5342 Hardware, Weapon System · CAGE 72914 · D18D21
Nearby stock numbers  ·
Features
  • Cap Assembly,duct — FSC 5342
  • General Characteristics Item Description: BOWL SHAPED ALUMINUM,1.625 INCH HIGH X 4.125 INCH DIA IN
  • 1 manufacturer part number on file
  • Manufacturer of record: Grimes Aerospace Company
Identification
  • NSN: 5342-00-442-0609
  • NIIN: 004420609
  • FSC: 5342 — Hardware, Weapon System
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: D18D21
  • Manufacturer: Grimes Aerospace Company
General Description

The Cap Assembly,duct, cataloged under National Stock Number 5342-00-442-0609, is classified within Federal Supply Class 5342 (Hardware, Weapon System) of the Hardware and Abrasives group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5342-00-442-0609
Primary Part NumberD18D21
Item NameCap Assembly,duct
FSC / FSG5342 / 53 — Hardware, Weapon System
ManufacturerGrimes Aerospace Company
StatusACTIVE
General Characteristics Item DescriptionBOWL SHAPED ALUMINUM,1.625 INCH HIGH X 4.125 INCH DIA IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
D18D21 PRIMARY Grimes Aerospace Company (USA)
No interchangeability data on file.
Other items in FSC 5342 — Hardware, Weapon System
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5342-00-001-1696
5342-00-001-1696 · Item name not on file
5342-00-001-1972
STRAP WEBBING ASSEMBLY
5342-00-001-1980
STRAP WEBBING ASSEMBLY
5342-00-001-2492
BRACKET,FUEL TUBE TO CASE
5342-00-001-2502
BRACKET,QUICK DISC
5342-00-001-3915
CLIP,SPECIAL
5342-00-001-4001
HANDLE ASSEMBLY
5342-00-001-4655
5342-00-001-4655 · Item name not on file

Frequently Asked Questions

What is NSN 5342-00-442-0609?

NSN 5342-00-442-0609 is a Cap Assembly,duct, manufactured by Grimes Aerospace Company, classified under FSC 5342, Hardware, Weapon System. Status: active.

What part numbers are listed for NSN 5342-00-442-0609?

NSN 5342-00-442-0609 has 1 manufacturer part number on file: D18D21 (Grimes Aerospace Company).

What are the specifications of D18D21?

Key specifications for D18D21: General Characteristics Item Description: BOWL SHAPED ALUMINUM,1.625 INCH HIGH X 4.125 INCH DIA IN; End Item Identification: MC-DONNELL DOUGLAS MODEL DC-9 AIRPLANE. 1 specification is documented in the U.S. Government catalog.

Is NSN 5342-00-442-0609 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.
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