PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-C-5501/9Cap,protective,dust and Moisture

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5340-01-203-7790 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-203-7790 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-203-7790. Primary manufacturer part number: MIL-C-5501/9.
Features
  • Cap,protective,dust and Moisture — FSC 5340
  • Inside Diameter Length: 0.500 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN
  • Design Type: FRICTION
  • Material Document and Classification: L-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
  • Tube Outside Diameter for Which Designed: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
  • Overall Diameter: 0.175 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
  • Round Cap Outside Surface Condition: SMOOTH
  • Material: PLASTIC
Applications
  • Applications requiring Plastic construction
General Description

The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-203-7790, 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 7 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
NSN5340-01-203-7790
Primary Part NumberMIL-C-5501/9
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
Inside Diameter Length0.500 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN
Design TypeFRICTION
Material Document and ClassificationL-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
Tube Outside Diameter for Which Designed0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
Overall Diameter0.175 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
Round Cap Outside Surface ConditionSMOOTH
MaterialPLASTIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
5340-00-597-4480NAS844-15 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-827-0802NAS844-11 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-00-993-4185NAS844-14 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-01-044-2675NAS844-13 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-01-082-3003NAS844-4 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-01-090-8911NAS844-23 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-01-107-7559NAS844-5 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-01-168-9786NAS844-28 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-01-170-6662NAS844-7 SUCCESSOR
Cap,protective,dust and Moisture
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5340-01-192-6461NAS844-25 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
MIL-C-5501/9 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M5501/9-F2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5340-00-597-4480SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-15
5340-00-827-0802SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-11
5340-00-993-4185SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-14
5340-01-044-2675SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-13
5340-01-082-3003SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-4
5340-01-090-8911SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-23
5340-01-107-7559SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-5
5340-01-168-9786SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-28
5340-01-170-6662SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-7
5340-01-192-6461SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-25
5340-01-208-7825SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-18
5340-01-215-0037SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
NAS844-17

Frequently Asked Questions

What is NSN 5340-01-203-7790?

NSN 5340-01-203-7790 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 5340-01-203-7790?

NSN 5340-01-203-7790 has 2 cross-referenced part numbers: MIL-C-5501/9 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M5501/9-F2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5340-01-203-7790?

There are 12 known substitutes for 5340-01-203-7790: 5340-00-597-4480, 5340-00-827-0802, 5340-00-993-4185 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-C-5501/9?

Key specifications for MIL-C-5501/9: Inside Diameter Length: 0.500 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN; Design Type: FRICTION; Material Document and Classification: L-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE; Tube Outside Diameter for Which Designed: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN. 7 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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