PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-C-5501/5Plug,protective,dust and Moistur

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5340-00-804-1257 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-804-1257 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-804-1257. Primary manufacturer part number: MIL-C-5501/5.
Features
  • Plug,protective,dust and Moistur — FSC 5340
  • Nondefinitive Spec/std Data: 5 TYPE AND A CLASS AND 0.125 SIZE
  • Overall Diameter: 0.750 INCHES NOMINAL IN
  • Thread Size and Series/type Designator: 1/8-27 ANPT
  • Drive Type: SERRATED OR SQUARE HEAD OR HEX SOCKET
  • Design Type: THREADED
  • 3 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Plug,protective,dust and Moistur, cataloged under National Stock Number 5340-00-804-1257, 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 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-804-1257
Primary Part NumberMIL-C-5501/5
Item NamePlug,protective,dust and Moistur
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Nondefinitive Spec/std Data5 TYPE AND A CLASS AND 0.125 SIZE
Overall Diameter0.750 INCHES NOMINAL IN
Thread Size and Series/type Designator1/8-27 ANPT
Drive TypeSERRATED OR SQUARE HEAD OR HEX SOCKET
Design TypeTHREADED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 7
5340-01-016-7383NAS840P6 SUCCESSOR
Plug,protective,dust and Moistur
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5935-00-615-8667 INTERCHANGEABLE
Connector,receptacle,electrical
5340-00-804-0784 INTERCHANGEABLE
Plug,protective,dust and Moistur
5340-01-162-9953 INTERCHANGEABLE
Plug,protective,dust and Moistur
5340-01-235-6188 INTERCHANGEABLE
Plug,protective,dust and Moistur
5340-01-307-8041 INTERCHANGEABLE
Plug,protective,dust and Moistur
5365-01-646-265399120407 INTERCHANGEABLE
Plug,machine Thread
Caplugs Llc Dba Mokon Div Caplugs
Cross-Reference Index
Part NumberManufacturer
MIL-C-5501/5 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M5501/5-2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILC5501TYPE5CLASSASIZE1-8 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5340-01-016-7383SUCCESSOR
PLUG,PROTECTIVE,DUST AND MOISTUR
NAS840P6
5935-00-615-8667INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5340-00-804-0784INTERCHANGEABLE
PLUG,PROTECTIVE,DUST AND MOISTUR
5340-01-162-9953INTERCHANGEABLE
PLUG,PROTECTIVE,DUST AND MOISTUR
5340-01-235-6188INTERCHANGEABLE
PLUG,PROTECTIVE,DUST AND MOISTUR
5340-01-307-8041INTERCHANGEABLE
PLUG,PROTECTIVE,DUST AND MOISTUR
5365-01-646-2653INTERCHANGEABLE
PLUG,MACHINE THREAD
99120407

Frequently Asked Questions

What is NSN 5340-00-804-1257?

NSN 5340-00-804-1257 is a Plug,protective,dust and Moistur, 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 5340-00-804-1257?

NSN 5340-00-804-1257 has 3 cross-referenced part numbers: MIL-C-5501/5 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M5501/5-2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILC5501TYPE5CLASSASIZE1-8 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5340-00-804-1257?

There are 7 known substitutes for 5340-00-804-1257: 5340-01-016-7383, 5935-00-615-8667, 5340-00-804-0784 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-C-5501/5?

Key specifications for MIL-C-5501/5: Nondefinitive Spec/std Data: 5 TYPE AND A CLASS AND 0.125 SIZE; Overall Diameter: 0.750 INCHES NOMINAL IN; Thread Size and Series/type Designator: 1/8-27 ANPT; Drive Type: SERRATED OR SQUARE HEAD OR HEX SOCKET. 5 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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