PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12Z12139-93Cap-Plug,protective,dust and Moi

Naval Ordnance Standards · NSN 5340-00-290-7263 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-290-7263 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-290-7263. Primary manufacturer part number: 12Z12139-93.
Features
  • Cap-Plug,protective,dust and Moi — FSC 5340
  • Material: PLASTIC
  • Length Under Shoulder: 1.000 INCHES NOMINAL IN
  • Open End Inside Diameter: 2.688 INCHES NOMINAL IN
  • Closed End Overall Diameter: 2.457 INCHES NOMINAL IN
  • 10 verified cross-references
  • Primary manufacturer: Naval Ordnance Standards
Applications
  • Applications requiring Plastic construction
General Description

The Cap-Plug,protective,dust and Moi, cataloged under National Stock Number 5340-00-290-7263, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Ordnance Standards. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-290-7263
Primary Part Number12Z12139-93
Item NameCap-Plug,protective,dust and Moi
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerNaval Ordnance Standards
StatusCANCELLED
MaterialPLASTIC
Length Under Shoulder1.000 INCHES NOMINAL IN
Open End Inside Diameter2.688 INCHES NOMINAL IN
Closed End Overall Diameter2.457 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5340-00-264-1205
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
Cap-Plug,protective,dust and Moi
Cap-Plug,protective,dust and Moi
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
5340-00-290-72341296631-2 SUCCESSOR
Plug,protective,dust and Moistur
Honeywell Intl Inc Defense Avionics Systems
5340-00-290-723624S SUCCESSOR
Cap-Plug,protective,dust and Moi
Caplugs Llc Dba Mokon Div Caplugs
Cross-Reference Index
Part NumberManufacturer
12Z12139-93 Naval Ordnance Standards (USA)
M5501/7-F47 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
T-43A Caplugs Llc Dba Mokon Div Caplugs (USA)
MILC52078 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-5501/7 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
43-A Zf Industrieantriebe Witten Gmbh (DEU)
SIZE43A Protective Closures Co Inc (USA)
248-1-2 Kearfott Corporation Div Guidance and Navigation Division (USA)
43A Caplugs Llc Dba Mokon Div Caplugs (USA)
NAS834-245 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
SUCCESSOR 5340-00-264-1205 Cap-Plug,protective,dust and Moi
5340-00-286-3511SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
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
5340-00-290-7239SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
SIZE220
5340-00-290-7241SUCCESSOR
CAP-PLUG,PROTECTIVE,DUST AND MOI
819356-1

Frequently Asked Questions

What is NSN 5340-00-290-7263?

NSN 5340-00-290-7263 is a Cap-Plug,protective,dust and Moi, manufactured by Naval Ordnance Standards, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-290-7263?

NSN 5340-00-290-7263 has 10 cross-referenced part numbers: 12Z12139-93 (Naval Ordnance Standards), M5501/7-F47 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), T-43A (Caplugs Llc Dba Mokon Div Caplugs), MILC52078 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-C-5501/7 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 5 more.

What NSN replaces 5340-00-290-7263?

There are 12 known substitutes for 5340-00-290-7263: 5340-00-264-1205, 5340-00-286-3511, 5340-00-290-7213 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12Z12139-93?

Key specifications for 12Z12139-93: Material: PLASTIC; Length Under Shoulder: 1.000 INCHES NOMINAL IN; Open End Inside Diameter: 2.688 INCHES NOMINAL IN; Closed End Overall Diameter: 2.457 INCHES NOMINAL IN. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-290-7263 still in active supply?

NSN 5340-00-290-7263 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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