PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6561Washer,flat

Motorola Aviation Electronics Inc · NSN 5310-00-025-7739 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-025-7739 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-025-7739. Primary manufacturer part number: 6561.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 0.359 INCHES NOMINAL IN
  • Material: STEEL COMP 1212 OVERALL
  • Thickness: 0.038 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 0.588 INCHES MINIMUM AND 0.593 INCHES MAXIMUM IN
  • Material Document and Classification: -SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1212 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-025-7739, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Motorola Aviation Electronics Inc. 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-025-7739
Primary Part Number6561
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMotorola Aviation Electronics Inc
StatusACTIVE
Hole Diameter0.359 INCHES NOMINAL IN
MaterialSTEEL COMP 1212 OVERALL
Thickness0.038 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter0.588 INCHES MINIMUM AND 0.593 INCHES MAXIMUM IN
Material Document and Classification-SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5315-00-145-5119 INTERCHANGEABLE
Pin,king
4820-00-375-75261H4820-375-7526 INTERCHANGEABLE
Disk,valve
Naval Inventory Control Point Mechanicsburg
6675-00-556-0202165 INTERCHANGEABLE
Table,tracing,drafting
Hamilton Mfg Co
2920-00-593-52356561 INTERCHANGEABLE
Cover,terminal Shie
Champion Aerospace Llc
5940-00-926-819212751A INTERCHANGEABLE
Terminal,feedthru
Staffall, Inc. Dba Staffall Inc
4720-01-083-2451AE145-1 INTERCHANGEABLE
Tubing,nonmetallic
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
5945-01-111-04206550-B INTERCHANGEABLE
Relay,electromagnetic
Hoyt Corporation
5962-01-119-4707 INTERCHANGEABLE
Microcircuit,memory
2940-01-274-191646561 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
4810-01-424-47216561-G501 INTERCHANGEABLE
Valve,solenoid
Howell Laboratories Inc Dba Howell Laboratories Inc
Cross-Reference Index
Part NumberManufacturer
6561 Motorola Aviation Electronics Inc (USA)
Related Parts
5315-00-145-5119INTERCHANGEABLE
PIN,KING
4820-00-375-7526INTERCHANGEABLE
DISK,VALVE
1H4820-375-7526
6675-00-556-0202INTERCHANGEABLE
TABLE,TRACING,DRAFTING
165
2920-00-593-5235INTERCHANGEABLE
COVER,TERMINAL SHIE
6561
5940-00-926-8192INTERCHANGEABLE
TERMINAL,FEEDTHRU
12751A
4720-01-083-2451INTERCHANGEABLE
TUBING,NONMETALLIC
AE145-1
5945-01-111-0420INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
6550-B
5962-01-119-4707INTERCHANGEABLE
MICROCIRCUIT,MEMORY
2940-01-274-1916INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
46561
4810-01-424-4721INTERCHANGEABLE
VALVE,SOLENOID
6561-G501
4810-01-424-4986INTERCHANGEABLE
PARTS KIT,SOLENOID VALVE
6561-02
3110-01-563-6799INTERCHANGEABLE
BEARING,BALL,ANNULAR
135556

Frequently Asked Questions

What is NSN 5310-00-025-7739?

NSN 5310-00-025-7739 is a Washer,flat, manufactured by Motorola Aviation Electronics Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-025-7739?

NSN 5310-00-025-7739 has 1 cross-referenced part number: 6561 (Motorola Aviation Electronics Inc).

What NSN replaces 5310-00-025-7739?

There are 12 known substitutes for 5310-00-025-7739: 5315-00-145-5119, 4820-00-375-7526, 6675-00-556-0202 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6561?

Key specifications for 6561: Hole Diameter: 0.359 INCHES NOMINAL IN; Material: STEEL COMP 1212 OVERALL; Thickness: 0.038 INCHES MINIMUM AND 0.044 INCHES MAXIMUM IN; Peripheral Shape Style: ROUND. 8 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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