PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12940Washer,flat

Aerosonic Llc · NSN 5310-00-411-9766 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-411-9766 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-411-9766. Primary manufacturer part number: 12940.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Thickness: 0.018 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
  • Hole Diameter: 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
  • Material: PLASTIC OVERALL
  • Overall Diameter: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
  • Material Document and Classification: MIL-P-19468 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Plastic Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-411-9766, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Aerosonic Llc. Government technical data includes 8 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-411-9766
Primary Part Number12940
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAerosonic Llc
StatusCANCELLED
Peripheral Shape StyleROUND
Thickness0.018 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
Hole Diameter0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
MaterialPLASTIC OVERALL
Overall Diameter0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
Material Document and ClassificationMIL-P-19468 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5360-00-664-91871112942 INTERCHANGEABLE
Spring,helical,torsion
Chrysler Realty Company Llc Dba Daimler Chrysler
5342-00-849-121612940 INTERCHANGEABLE
Ring
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
2805-00-963-9652 INTERCHANGEABLE
Crosshead
4540-01-159-0916 INTERCHANGEABLE
End Bell,upper
6145-01-271-650212940 INTERCHANGEABLE
Cable,power,electrical
Rscc Wire & Cable Llc Dba Marmon Industrial Energy & Infrastructure - East Granby
5950-01-600-801712940 INTERCHANGEABLE
Transformer.
Pico Electronics Inc
Cross-Reference Index
Part NumberManufacturer
12940 PRIMARY Aerosonic Llc (USA)
Related Parts
5360-00-664-9187INTERCHANGEABLE
SPRING,HELICAL,TORSION
1112942
5342-00-849-1216INTERCHANGEABLE
RING
12940
2805-00-963-9652INTERCHANGEABLE
CROSSHEAD
4540-01-159-0916INTERCHANGEABLE
END BELL,UPPER
6145-01-271-6502INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
12940
5950-01-600-8017INTERCHANGEABLE
TRANSFORMER.
12940

Frequently Asked Questions

What is NSN 5310-00-411-9766?

NSN 5310-00-411-9766 is a Washer,flat, manufactured by Aerosonic Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-411-9766?

NSN 5310-00-411-9766 has 1 cross-referenced part number: 12940 (Aerosonic Llc).

What NSN replaces 5310-00-411-9766?

There are 6 known substitutes for 5310-00-411-9766: 5360-00-664-9187, 5342-00-849-1216, 2805-00-963-9652 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12940?

Key specifications for 12940: Peripheral Shape Style: ROUND; Thickness: 0.018 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN; Hole Diameter: 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; Material: PLASTIC OVERALL. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-411-9766 still in active supply?

NSN 5310-00-411-9766 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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