PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

129-900-052Cap-Plug,protective,dust and Moi

Raytheon Company · NSN 5340-00-514-2777 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-514-2777 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-514-2777. Primary manufacturer part number: 129-900-052.
Features
  • Cap-Plug,protective,dust and Moi — FSC 5340
  • Closed End Overall Diameter: 0.427 INCHES NOMINAL IN
  • Length Under Shoulder: 0.813 INCHES NOMINAL IN
  • Open End Inside Diameter: 0.356 INCHES NOMINAL IN
  • Material: PLASTIC
  • 6 verified cross-references
  • Primary manufacturer: Raytheon Company
Applications
  • Applications requiring Plastic construction
General Description

The Cap-Plug,protective,dust and Moi, cataloged under National Stock Number 5340-00-514-2777, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Raytheon Company. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5340-00-514-2777
Primary Part Number129-900-052
Item NameCap-Plug,protective,dust and Moi
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerRaytheon Company
StatusCANCELLED
Closed End Overall Diameter0.427 INCHES NOMINAL IN
Length Under Shoulder0.813 INCHES NOMINAL IN
Open End Inside Diameter0.356 INCHES NOMINAL IN
MaterialPLASTIC
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5340-00-292-2967 (10-644-8-2)
HAZMATNo
Verified Substitutes 5
No Item Name Available
5340-00-292-296710-644-8-2 SUCCESSOR
Cap-Plug,protective,dust and Moi
Parker Hannifin Corporation Div Hydraulic Systems Division
5905-00-101-0642 INTERCHANGEABLE
Resistor,fixed,wire Wound
5905-00-109-0375 INTERCHANGEABLE
Resistor,fixed,wire Wound
5120-01-578-3508 INTERCHANGEABLE
Wire,windshield Removal
Cross-Reference Index
Part NumberManufacturer
WW4 Protective Closures Co Inc (USA)
10117383 Nimikkeistokeskus Ncb Finland (FIN)
NAS816-42 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
NAS816-4 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
N120WW4 Bio-Rad (FRA)
129-900-052 PRIMARY Raytheon Company (USA)
Related Parts
SUCCESSOR 5340-00-292-2967 Cap-Plug,protective,dust and Moi · 10-644-8-2
5340-00-821-5869SUCCESSOR
NO ITEM NAME AVAILABLE
5905-00-101-0642INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5905-00-109-0375INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5120-01-578-3508INTERCHANGEABLE
WIRE,WINDSHIELD REMOVAL

Frequently Asked Questions

What is NSN 5340-00-514-2777?

NSN 5340-00-514-2777 is a Cap-Plug,protective,dust and Moi, manufactured by Raytheon Company, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-514-2777?

NSN 5340-00-514-2777 has 6 cross-referenced part numbers: WW4 (Protective Closures Co Inc), 10117383 (Nimikkeistokeskus Ncb Finland), NAS816-42 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), NAS816-4 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), N120WW4 (Bio-Rad) and 1 more.

What NSN replaces 5340-00-514-2777?

There are 5 known substitutes for 5340-00-514-2777: 5340-00-821-5869, 5340-00-292-2967, 5905-00-101-0642 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 129-900-052?

Key specifications for 129-900-052: Closed End Overall Diameter: 0.427 INCHES NOMINAL IN; Length Under Shoulder: 0.813 INCHES NOMINAL IN; Open End Inside Diameter: 0.356 INCHES NOMINAL IN; Material: PLASTIC. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-514-2777 still in active supply?

NSN 5340-00-514-2777 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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