PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

61313-9Washer,flat

Northrop Grumman Corp Electronic Systems Defensive System Div · NSN 5310-00-400-3965 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-400-3965 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-400-3965. Primary manufacturer part number: 61313-9.
Features
  • Washer,flat — FSC 5310
  • Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Material Document and Classification: QQ-A-250/5 T3,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Hole Diameter: 0.252 INCHES MINIMUM AND 0.272 INCHES MAXIMUM IN
  • Material: ALUMINUM ALLOY OVERALL
  • Center Hole Shape Style: ROUND
  • Thickness: 0.029 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
  • Overall Diameter: 0.353 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-400-3965, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Northrop Grumman Corp Electronic Systems Defensive System Div. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-400-3965
Primary Part Number61313-9
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNorthrop Grumman Corp Electronic Systems Defensive System Div
StatusCANCELLED
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Material Document and ClassificationQQ-A-250/5 T3,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Hole Diameter0.252 INCHES MINIMUM AND 0.272 INCHES MAXIMUM IN
MaterialALUMINUM ALLOY OVERALL
Center Hole Shape StyleROUND
Thickness0.029 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
Overall Diameter0.353 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Surface TreatmentANODIZE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5935-00-458-68266-1313-9 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch
Cross-Reference Index
Part NumberManufacturer
61313-9 PRIMARY Northrop Grumman Corp Electronic Systems Defensive System Div (USA)
Related Parts
5935-00-458-6826INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
6-1313-9

Frequently Asked Questions

What is NSN 5310-00-400-3965?

NSN 5310-00-400-3965 is a Washer,flat, manufactured by Northrop Grumman Corp Electronic Systems Defensive System Div, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-400-3965?

NSN 5310-00-400-3965 has 1 cross-referenced part number: 61313-9 (Northrop Grumman Corp Electronic Systems Defensive System Div).

What NSN replaces 5310-00-400-3965?

There is 1 known substitute for 5310-00-400-3965: 5935-00-458-6826. Verify interchangeability with system specifications before substitution.

What are the specifications of 61313-9?

Key specifications for 61313-9: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: QQ-A-250/5 T3,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Hole Diameter: 0.252 INCHES MINIMUM AND 0.272 INCHES MAXIMUM IN; Material: ALUMINUM ALLOY OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-400-3965 still in active supply?

NSN 5310-00-400-3965 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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