PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6816403Washer,flat

Allison Transmission Inc Dba Allison Transmission, Inc · NSN 5310-00-044-6179 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-044-6179 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-044-6179. Primary manufacturer part number: 6816403.
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
  • Hole Diameter: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
  • Material Document and Classification: ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
  • Thickness: 0.036 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM OR ZINC OVERALL
  • Departure From Cited Document: AS MODIFIED BY SURFACE TREATMENT
  • Nondefinitive Spec/std Data: A TYPE
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 5310-00-044-6179, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-044-6179
Primary Part Number6816403
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAllison Transmission Inc Dba Allison Transmission, Inc
StatusCANCELLED
MaterialSTEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL
Hole Diameter0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
Material Document and ClassificationASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
Thickness0.036 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OR ZINC OVERALL
Departure From Cited DocumentAS MODIFIED BY SURFACE TREATMENT
Nondefinitive Spec/std DataA TYPE
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Overall Diameter0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
4130-00-353-5774 INTERCHANGEABLE
Piston and Pin Asse
5999-00-361-8540 INTERCHANGEABLE
Contact,electrical
4320-00-444-5142212-076-011-1 INTERCHANGEABLE
Pump,axial Pistons
Bell Textron Inc
5120-00-798-0831 INTERCHANGEABLE
Crowfoot Attachment
5995-01-013-610066005 INTERCHANGEABLE
Cable Assembly,power,electrical
Page Chester Ltd Dba Cooperative Industries Div Cooperative Industries Aerospace Defense
4460-01-057-2008 INTERCHANGEABLE
Collector Unit,assembly
5975-01-622-4773220673 INTERCHANGEABLE
Protector,electrical Cable
Hypertherm, Inc. Div Hypertherm
Cross-Reference Index
Part NumberManufacturer
6816403 PRIMARY Allison Transmission Inc Dba Allison Transmission, Inc (USA)
66005 United States Postal Service (USA)
MILW1085TYPEA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M220673 Met-Pro Corporation (USA)
274405PC8 Naval Sea Systems Command (USA)
220673 PRIMARY Briggs and Stratton Corp (USA)
6816403 General Motors Corp (USA)
Related Parts
4130-00-353-5774INTERCHANGEABLE
PISTON AND PIN ASSE
5999-00-361-8540INTERCHANGEABLE
CONTACT,ELECTRICAL
4320-00-444-5142INTERCHANGEABLE
PUMP,AXIAL PISTONS
212-076-011-1
5120-00-798-0831INTERCHANGEABLE
CROWFOOT ATTACHMENT
5995-01-013-6100INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
66005
4460-01-057-2008INTERCHANGEABLE
COLLECTOR UNIT,ASSEMBLY
5975-01-622-4773INTERCHANGEABLE
PROTECTOR,ELECTRICAL CABLE
220673

Frequently Asked Questions

What is NSN 5310-00-044-6179?

NSN 5310-00-044-6179 is a Washer,flat, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-044-6179?

NSN 5310-00-044-6179 has 7 cross-referenced part numbers: 6816403 (Allison Transmission Inc Dba Allison Transmission, Inc), 66005 (United States Postal Service), MILW1085TYPEA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M220673 (Met-Pro Corporation), 274405PC8 (Naval Sea Systems Command) and 2 more.

What NSN replaces 5310-00-044-6179?

There are 7 known substitutes for 5310-00-044-6179: 4130-00-353-5774, 5999-00-361-8540, 4320-00-444-5142 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6816403?

Key specifications for 6816403: 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; Hole Diameter: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Material Document and Classification: ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL; Thickness: 0.036 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-044-6179 still in active supply?

NSN 5310-00-044-6179 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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