PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS817-2Cap,protective,dust and Moisture

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5340-00-682-2112 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-682-2112 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-682-2112. Primary manufacturer part number: NAS817-2.
Features
  • Cap,protective,dust and Moisture — FSC 5340
  • Overall Diameter: 0.438 INCHES NOMINAL IN
  • Thread Class: 1B
  • Round Cap Outside Surface Condition: SERRATED
  • Thread Size and Series/type Designator: 5/16-24 UNIFIED NATIONAL COARSE (UNC)
  • Surface Treatment: ANODIZE
  • Design Type: THREADED
  • Material: ALUMINUM
Applications
  • Applications requiring Aluminum construction
General Description

The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-00-682-2112, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-682-2112
Primary Part NumberNAS817-2
Item NameCap,protective,dust and Moisture
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Overall Diameter0.438 INCHES NOMINAL IN
Thread Class1B
Round Cap Outside Surface ConditionSERRATED
Thread Size and Series/type Designator5/16-24 UNIFIED NATIONAL COARSE (UNC)
Surface TreatmentANODIZE
Design TypeTHREADED
MaterialALUMINUM
Inside Diameter Length0.563 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5340-00-961-8523 (YC6-2S)
HAZMATNo
Unit of IssueEA
Verified Substitutes 3
No Item Name Available
5340-00-961-8523YC6-2S SUCCESSOR
Clamp,synchro
Designatronics Inc Perfect Gear and Instrument Div
5340-01-692-9188C-2 SUCCESSOR
Cap,protective,dust and Moisture
Caplugs Llc Dba Mokon Div Caplugs
Cross-Reference Index
Part NumberManufacturer
C2 G T I Corp Clover Industries Div (USA)
NAS817-2 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
SUCCESSOR 5340-00-961-8523 Clamp,synchro · YC6-2S
5340-00-664-5867SUCCESSOR
NO ITEM NAME AVAILABLE
5340-01-692-9188SUCCESSOR
CAP,PROTECTIVE,DUST AND MOISTURE
C-2

Frequently Asked Questions

What is NSN 5340-00-682-2112?

NSN 5340-00-682-2112 is a Cap,protective,dust and Moisture, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-682-2112?

NSN 5340-00-682-2112 has 2 cross-referenced part numbers: C2 (G T I Corp Clover Industries Div), NAS817-2 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use).

What NSN replaces 5340-00-682-2112?

There are 3 known substitutes for 5340-00-682-2112: 5340-00-664-5867, 5340-00-961-8523, 5340-01-692-9188. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS817-2?

Key specifications for NAS817-2: Overall Diameter: 0.438 INCHES NOMINAL IN; Thread Class: 1B; Round Cap Outside Surface Condition: SERRATED; Thread Size and Series/type Designator: 5/16-24 UNIFIED NATIONAL COARSE (UNC). 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-682-2112 still in active supply?

NSN 5340-00-682-2112 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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