PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

504B8-31-89Washer,flat

Cardwell Condenser Corp Lapointe-Admiral Div · NSN 5310-00-264-1395 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-264-1395 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-264-1395. Primary manufacturer part number: 504B8-31-89.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Surface Treatment: CADMIUM OVERALL
  • Material Document and Classification: QQ-S-636-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Peripheral Shape Style: ROUND
  • Thickness: 0.031 INCHES NOMINAL IN
  • Hole Diameter: 0.140 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-264-1395, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cardwell Condenser Corp Lapointe-Admiral Div. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-264-1395
Primary Part Number504B8-31-89
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCardwell Condenser Corp Lapointe-Admiral Div
StatusCANCELLED
Overall Diameter0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OVERALL
Material Document and ClassificationQQ-S-636-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Peripheral Shape StyleROUND
Thickness0.031 INCHES NOMINAL IN
Hole Diameter0.140 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5310-00-039-5369361984 INTERCHANGEABLE
Washer,flat
Airmotive Carburetor
5950-00-830-4843 INTERCHANGEABLE
Transformer,radio Frequency
Cross-Reference Index
Part NumberManufacturer
P11D5878 Westinghouse Electric Corp (USA)
504B8-31-89 PRIMARY Cardwell Condenser Corp Lapointe-Admiral Div (USA)
41271EAL Bendix Corp the Brake and Steering Div (USA)
503/4/04023 G E C Aerospace Ltd (GBR)
503/2/04023 G E C Aerospace Ltd (GBR)
503-2-04023 Eaton Limited (GBR)
41271 Honeywell Intl Inc Defense Avionics Systems (USA)
545C473P5 Bae Systems Controls Inc. (USA)
Related Parts
5310-00-039-5369INTERCHANGEABLE
WASHER,FLAT
361984
5950-00-830-4843INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY

Frequently Asked Questions

What is NSN 5310-00-264-1395?

NSN 5310-00-264-1395 is a Washer,flat, manufactured by Cardwell Condenser Corp Lapointe-Admiral Div, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-264-1395?

NSN 5310-00-264-1395 has 8 cross-referenced part numbers: P11D5878 (Westinghouse Electric Corp), 504B8-31-89 (Cardwell Condenser Corp Lapointe-Admiral Div), 41271EAL (Bendix Corp the Brake and Steering Div), 503/4/04023 (G E C Aerospace Ltd), 503/2/04023 (G E C Aerospace Ltd) and 3 more.

What NSN replaces 5310-00-264-1395?

There are 2 known substitutes for 5310-00-264-1395: 5310-00-039-5369, 5950-00-830-4843. Verify interchangeability with system specifications before substitution.

What are the specifications of 504B8-31-89?

Key specifications for 504B8-31-89: Overall Diameter: 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Material: STEEL OVERALL; Surface Treatment: CADMIUM OVERALL; Material Document and Classification: QQ-S-636-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-264-1395 still in active supply?

NSN 5310-00-264-1395 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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