PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M5501/11-F18Cap,protective,dust and Moisture

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5340-01-411-9628 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-411-9628 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-411-9628. Primary manufacturer part number: M5501/11-F18.
Features
  • Cap,protective,dust and Moisture — FSC 5340
  • Thread Size and Series/type Designator: 1 7/8-12 UN
  • Material Document and Classification: L-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
  • Material: PLASTIC
  • Thread Class: 3B
  • Round Cap Outside Surface Condition: RIBBED
  • Design Type: THREADED
  • Overall Diameter: 2.030 INCHES MINIMUM AND 2.090 INCHES MAXIMUM IN
Applications
  • Applications requiring Plastic construction
General Description

The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-411-9628, 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 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-411-9628
Primary Part NumberM5501/11-F18
Item NameCap,protective,dust and Moisture
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Thread Size and Series/type Designator1 7/8-12 UN
Material Document and ClassificationL-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
MaterialPLASTIC
Thread Class3B
Round Cap Outside Surface ConditionRIBBED
Design TypeTHREADED
Overall Diameter2.030 INCHES MINIMUM AND 2.090 INCHES MAXIMUM IN
Inside Diameter Length0.970 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
5340-00-515-0525NAS832-3 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-664-0671NAS832-6 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-727-4774NAS832-5 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-727-4779CD16 SUCCESSOR
Cap,protective,dust and Moisture
Caplugs Llc Dba Mokon Div Caplugs
5340-01-097-8276NAS832-10 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-01-097-8277NAS832-8 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-01-183-0976NAS832-18 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-01-206-5372NAS832-9 SUCCESSOR
Cap,protective,dust and Moisture
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
5340-00-598-6656 INTERCHANGEABLE
Cap,protective,dust and Moisture
Cross-Reference Index
Part NumberManufacturer
M5501/11-F18 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-5501/11 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5340-00-515-0525SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS832-3
5340-00-664-0671SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS832-6
5340-00-727-4774SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS832-5
5340-00-727-4779SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
CD16
5340-01-097-8276SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS832-10
5340-01-097-8277SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS832-8
5340-01-183-0976SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS832-18
5340-01-206-5372SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS832-9
5340-01-217-2324SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS832-7
5340-00-598-6656INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
5340-01-082-3004INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
5340-01-167-9314INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE

Frequently Asked Questions

What is NSN 5340-01-411-9628?

NSN 5340-01-411-9628 is a Cap,protective,dust and Moisture, 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: active.

What are the part numbers for NSN 5340-01-411-9628?

NSN 5340-01-411-9628 has 2 cross-referenced part numbers: M5501/11-F18 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-C-5501/11 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5340-01-411-9628?

There are 12 known substitutes for 5340-01-411-9628: 5340-00-515-0525, 5340-00-664-0671, 5340-00-727-4774 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M5501/11-F18?

Key specifications for M5501/11-F18: Thread Size and Series/type Designator: 1 7/8-12 UN; Material Document and Classification: L-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE; Material: PLASTIC; Thread Class: 3B. 8 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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