PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILC52078Cap-Plug,protective,dust and Moi

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5340-00-264-1208 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-264-1208 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-264-1208. Primary manufacturer part number: MILC52078.
Features
  • Cap-Plug,protective,dust and Moi — FSC 5340
  • Material: PLASTIC
  • Open End Inside Diameter: 1.900 INCHES NOMINAL IN
  • Length Under Shoulder: 1.837 INCHES NOMINAL IN
  • Closed End Overall Diameter: 2.076 INCHES NOMINAL IN
  • 3 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Applications requiring Plastic construction
General Description

The Cap-Plug,protective,dust and Moi, cataloged under National Stock Number 5340-00-264-1208, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5340-00-264-1208
Primary Part NumberMILC52078
Item NameCap-Plug,protective,dust and Moi
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
MaterialPLASTIC
Open End Inside Diameter1.900 INCHES NOMINAL IN
Length Under Shoulder1.837 INCHES NOMINAL IN
Closed End Overall Diameter2.076 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5340-00-286-3511
HAZMATNo
Verified Substitutes 12
No Item Name Available
Cap-Plug,protective,dust and Moi
Plug,protective,dust and Moistur
Plug,protective,dust and Moistur
5340-00-290-721317 SUCCESSOR
Cap-Plug,protective,dust and Moi
Caplugs Llc Dba Mokon Div Caplugs
5340-00-290-72150S025262 SUCCESSOR
Cap-Plug,protective,dust and Moi
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5340-00-290-72217 SUCCESSOR
Cap-Plug,protective,dust and Moi
Caplugs Llc Dba Mokon Div Caplugs
5340-00-290-7226T-96A SUCCESSOR
Cap-Plug,protective,dust and Moi
Caplugs Llc Dba Mokon Div Caplugs
5340-00-290-722953 SUCCESSOR
Cap-Plug,protective,dust and Moi
Caplugs Llc Dba Mokon Div Caplugs
Cap-Plug,protective,dust and Moi
Cross-Reference Index
Part NumberManufacturer
MILC52078 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
21 Protective Closures Co Inc (USA)
MIL-C-5501 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 5340-00-286-3511 Cap-Plug,protective,dust and Moi
5340-00-543-3995SUCCESSOR
NO ITEM NAME AVAILABLE
5340-00-286-4146SUCCESSOR
PLUG,PROTECTIVE,DUST AND MOISTUR
5340-00-286-4161SUCCESSOR
PLUG,PROTECTIVE,DUST AND MOISTUR
5340-00-290-7213SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
17
5340-00-290-7215SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
0S025262
5340-00-290-7221SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
7
5340-00-290-7226SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
T-96A
5340-00-290-7229SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
53
5340-00-290-7230SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
5340-00-290-7234SUCCESSOR
PLUG,PROTECTIVE,DUST AND MOISTUR
1296631-2
5340-00-290-7236SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
24S

Frequently Asked Questions

What is NSN 5340-00-264-1208?

NSN 5340-00-264-1208 is a Cap-Plug,protective,dust and Moi, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-264-1208?

NSN 5340-00-264-1208 has 3 cross-referenced part numbers: MILC52078 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 21 (Protective Closures Co Inc), MIL-C-5501 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5340-00-264-1208?

There are 12 known substitutes for 5340-00-264-1208: 5340-00-543-3995, 5340-00-286-3511, 5340-00-286-4146 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILC52078?

Key specifications for MILC52078: Material: PLASTIC; Open End Inside Diameter: 1.900 INCHES NOMINAL IN; Length Under Shoulder: 1.837 INCHES NOMINAL IN; Closed End Overall Diameter: 2.076 INCHES NOMINAL IN. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-264-1208 still in active supply?

NSN 5340-00-264-1208 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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