PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8-9-3Washer,flat

L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. · NSN 5310-01-494-0558 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-494-0558 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-494-0558. Primary manufacturer part number: 8-9-3.
Features
  • Washer,flat — FSC 5310
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH ACTIVITY HX QUALITY CONTROL,
  • 3 verified cross-references
  • Primary manufacturer: L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-494-0558, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references 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
NSN5310-01-494-0558
Primary Part Number8-9-3
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerL3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH ACTIVITY HX QUALITY CONTROL,
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-6153147487 INTERCHANGEABLE
Ball,bearing
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4320-00-218-3120893 INTERCHANGEABLE
Ring,lantern
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6685-00-428-6323 INTERCHANGEABLE
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7430-00-431-5773893 INTERCHANGEABLE
Typewriter
International Business Machines Corp Parts Order Center Dept E - 54
5910-00-583-4405190268-3 INTERCHANGEABLE
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Raytheon Company
2990-00-846-29421551 INTERCHANGEABLE
Muffler,exhaust
Arvin Industries Inc
5120-00-867-81485120008678148 INTERCHANGEABLE
Wrench,spanner
General Services Administration Federal Supply Service
4240-00-941-1341893 INTERCHANGEABLE
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Stewart R. Browne Mfg. Co., Inc.
4820-01-130-439080421 INTERCHANGEABLE
Parts Kit,ball Valve
Elkhart Brass Manufacturing Company, Llc Div Elkhart Brass Manufacturing Company
4820-01-189-8820893-00 INTERCHANGEABLE
Stem,fluid Valve
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Cross-Reference Index
Part NumberManufacturer
8-9-3 L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA)
54500FIG8-13-04 L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA)
54500-G L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA)
Related Parts
3110-00-100-6153INTERCHANGEABLE
BALL,BEARING
147487
4320-00-218-3120INTERCHANGEABLE
RING,LANTERN
893
6685-00-428-6323INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
7430-00-431-5773INTERCHANGEABLE
TYPEWRITER
893
5910-00-583-4405INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
190268-3
2990-00-846-2942INTERCHANGEABLE
MUFFLER,EXHAUST
1551
5120-00-867-8148INTERCHANGEABLE
WRENCH,SPANNER
5120008678148
4240-00-941-1341INTERCHANGEABLE
STRAP,WRIST GROUNDING
893
4820-01-130-4390INTERCHANGEABLE
PARTS KIT,BALL VALVE
80421
4820-01-189-8820INTERCHANGEABLE
STEM,FLUID VALVE
893-00
5310-01-299-8314INTERCHANGEABLE
WASHER,FLAT
54500G00
5940-01-353-4835INTERCHANGEABLE
TERMINAL,QUICK DISCONNECT

Frequently Asked Questions

What is NSN 5310-01-494-0558?

NSN 5310-01-494-0558 is a Washer,flat, manufactured by L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-494-0558?

NSN 5310-01-494-0558 has 3 cross-referenced part numbers: 8-9-3 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.), 54500FIG8-13-04 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.), 54500-G (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.).

What NSN replaces 5310-01-494-0558?

There are 12 known substitutes for 5310-01-494-0558: 3110-00-100-6153, 4320-00-218-3120, 6685-00-428-6323 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8-9-3?

Key specifications for 8-9-3: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH ACTIVITY HX QUALITY CONTROL,. 2 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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