PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS842-5APlug,protective,dust and Moistur

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5340-00-804-1239 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-804-1239 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-804-1239. Primary manufacturer part number: NAS842-5A.
Features
  • Plug,protective,dust and Moistur — FSC 5340
  • Thread Class: 2A A
  • Surface Treatment Document and Classification: MIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE A
  • Overall Diameter: 0.680 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
  • Thread Size and Series/type Designator: 1/2-20 NF
  • Design Type: THREADED
  • Drive Type: SERRATED OR SQUARE HEAD OR HEX SOCKET
  • Material: ALUMINUM ALLOY 3003
Applications
  • Applications requiring Aluminum Alloy 3003 construction
General Description

The Plug,protective,dust and Moistur, cataloged under National Stock Number 5340-00-804-1239, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-804-1239
Primary Part NumberNAS842-5A
Item NamePlug,protective,dust and Moistur
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusACTIVE
Thread Class2A A
Surface Treatment Document and ClassificationMIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE A
Overall Diameter0.680 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
Thread Size and Series/type Designator1/2-20 NF
Design TypeTHREADED
Drive TypeSERRATED OR SQUARE HEAD OR HEX SOCKET
MaterialALUMINUM ALLOY 3003
Material Document and ClassificationQQ-A-250/2 FED SPEC SINGLE MATERIAL RESPONSE
Features ProvidedSHOULDER
Nondefinitive Spec/std Data1 TYPE AND C CLASS
Surface TreatmentCHROMATE OR ANODIZE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 4
5340-00-286-3506NAS834-117 SUCCESSOR
Cap-Plug,protective,dust and Moi
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-837-9408AS90376-A1-14R SUCCESSOR
Cap,protective,dust and Moisture
Sae International Dba Sae International
5340-01-043-7078NAS834-80 SUCCESSOR
Cap-Plug,protective,dust and Moi
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-01-217-2324NAS832-7 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
NAS847 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NAS842-5A PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
M5501/2-5 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILC5501TYPE1CLASSCSIZE5 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5340-00-286-3506SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
NAS834-117
5340-00-837-9408SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
AS90376-A1-14R
5340-01-043-7078SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
NAS834-80
5340-01-217-2324SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS832-7

Frequently Asked Questions

What is NSN 5340-00-804-1239?

NSN 5340-00-804-1239 is a Plug,protective,dust and Moistur, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-804-1239?

NSN 5340-00-804-1239 has 4 cross-referenced part numbers: NAS847 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NAS842-5A (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), M5501/2-5 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILC5501TYPE1CLASSCSIZE5 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5340-00-804-1239?

There are 4 known substitutes for 5340-00-804-1239: 5340-00-286-3506, 5340-00-837-9408, 5340-01-043-7078 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS842-5A?

Key specifications for NAS842-5A: Thread Class: 2A A; Surface Treatment Document and Classification: MIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE A; Overall Diameter: 0.680 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN; Thread Size and Series/type Designator: 1/2-20 NF. 11 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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