PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

88-20564-12Washer,flat

Department of Defense Project Manager-Mobile Electric Power · NSN 5310-00-044-6477 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-044-6477 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-044-6477. Primary manufacturer part number: 88-20564-12.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL
  • Material Document and Classification: ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
  • Departure From Cited Document: AS MODIFIED BY SURFACE TREATMENT
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 0.995 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM OR ZINC OVERALL
  • Hole Diameter: 0.324 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1010 or Steel Comp 1015 or Steel Comp 1016 or Steel Comp 1018 or Steel Comp 1019 or Steel Comp 1020 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-044-6477, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Department of Defense Project Manager-Mobile Electric Power. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-044-6477
Primary Part Number88-20564-12
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerDepartment of Defense Project Manager-Mobile Electric Power
StatusACTIVE
MaterialSTEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL
Material Document and ClassificationASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
Departure From Cited DocumentAS MODIFIED BY SURFACE TREATMENT
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter0.995 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OR ZINC OVERALL
Hole Diameter0.324 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Nondefinitive Spec/std DataA TYPE
Peripheral Shape StyleROUND
Thickness0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-809-4058 INTERCHANGEABLE
Washer,flat
5310-01-103-6042 INTERCHANGEABLE
Washer,flat
5310-01-234-9415 INTERCHANGEABLE
Washer,flat
5310-01-234-9416 INTERCHANGEABLE
Washer,flat
5310-01-242-2679 INTERCHANGEABLE
Washer,flat
5310-01-266-4641 INTERCHANGEABLE
Washer,flat
5310-01-267-1685 INTERCHANGEABLE
Washer,flat
5310-01-396-5840 INTERCHANGEABLE
Washer,flat
5310-01-466-4926 INTERCHANGEABLE
Washer,flat
5310-01-471-063388-20033-20C INTERCHANGEABLE
Washer,flat
Department of Defense Project Manager-Mobile Electric Power
Cross-Reference Index
Part NumberManufacturer
88-20564-12 Department of Defense Project Manager-Mobile Electric Power (USA)
88-20033-25A Department of Defense Project Manager-Mobile Electric Power (USA)
MS51412-25 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
88-20033 Department of Defense Project Manager-Mobile Electric Power (USA)
88-20564 Department of Defense Project Manager-Mobile Electric Power (USA)
Related Parts
5310-00-809-4058INTERCHANGEABLE
WASHER,FLAT
5310-01-103-6042INTERCHANGEABLE
WASHER,FLAT
5310-01-234-9415INTERCHANGEABLE
WASHER,FLAT
5310-01-234-9416INTERCHANGEABLE
WASHER,FLAT
5310-01-242-2679INTERCHANGEABLE
WASHER,FLAT
5310-01-266-4641INTERCHANGEABLE
WASHER,FLAT
5310-01-267-1685INTERCHANGEABLE
WASHER,FLAT
5310-01-396-5840INTERCHANGEABLE
WASHER,FLAT
5310-01-466-4926INTERCHANGEABLE
WASHER,FLAT
5310-01-471-0633INTERCHANGEABLE
WASHER,FLAT
88-20033-20C
5310-01-471-0640INTERCHANGEABLE
WASHER,FLAT
88-20033-11C
5310-01-471-2446INTERCHANGEABLE
WASHER,FLAT
88-20033-24B

Frequently Asked Questions

What is NSN 5310-00-044-6477?

NSN 5310-00-044-6477 is a Washer,flat, manufactured by Department of Defense Project Manager-Mobile Electric Power, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-044-6477?

NSN 5310-00-044-6477 has 5 cross-referenced part numbers: 88-20564-12 (Department of Defense Project Manager-Mobile Electric Power), 88-20033-25A (Department of Defense Project Manager-Mobile Electric Power), MS51412-25 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 88-20033 (Department of Defense Project Manager-Mobile Electric Power), 88-20564 (Department of Defense Project Manager-Mobile Electric Power).

What NSN replaces 5310-00-044-6477?

There are 12 known substitutes for 5310-00-044-6477: 5310-00-809-4058, 5310-01-103-6042, 5310-01-234-9415 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 88-20564-12?

Key specifications for 88-20564-12: Material: STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL; Material Document and Classification: ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL; Departure From Cited Document: AS MODIFIED BY SURFACE TREATMENT; Cross-Sectional Shape Style: RECTANGULAR. 11 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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