Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Overall Diameter: 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
Material Document and Classification: QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape Style: RECTANGULAR
Surface Treatment: ANODIZE OVERALL
Peripheral Shape Style: ROUND
Material: ALUMINUM ALLOY 6061 OVERALL
Identification
NSN: 5310-00-018-7478
NIIN: 000187478
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
General Description
The Washer,flat, cataloged under National Stock Number 5310-00-018-7478, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-018-7478
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Status
ACTIVE
Surface Treatment Document and Classification
MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Overall Diameter
0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN
Material Document and Classification
QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape Style
RECTANGULAR
Surface Treatment
ANODIZE OVERALL
Peripheral Shape Style
ROUND
Material
ALUMINUM ALLOY 6061 OVERALL
Center Hole Shape Style
ROUND
Hole Diameter
0.440 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
Thickness
0.067 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
1650-00-083-409319343POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Mid-America Aerotech, Llc
5920-00-284-7466SM-B-289972-7POSSIBLE MATCH
FUSE,CARTRIDGE
Possible match (shared part number)Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6145-00-299-6256POSSIBLE MATCH
CABLE,POWER,ELECTRICAL
Possible match (shared part number)
4130-00-779-409819343POSSIBLE MATCH
CABLE,HANDBRAKE,SHO
Possible match (shared part number)Hdt Expeditionary Systems Inc
6145-01-377-993502769POSSIBLE MATCH
CABLE,POWER,ELECTRICAL
Possible match (shared part number)General Cable Corporation Div Corporate
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
19343
3/2Design control — primary reference
U.S. Government activity
Related Parts
1650-00-083-4093POSSIBLE MATCH
DISK,VALVE
19343
5920-00-284-7466POSSIBLE MATCH
FUSE,CARTRIDGE
SM-B-289972-7
6145-00-299-6256POSSIBLE MATCH
CABLE,POWER,ELECTRICAL
4130-00-779-4098POSSIBLE MATCH
CABLE,HANDBRAKE,SHO
19343
6145-01-377-9935POSSIBLE MATCH
CABLE,POWER,ELECTRICAL
02769
Frequently Asked Questions
What is NSN 5310-00-018-7478?
NSN 5310-00-018-7478 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
What NSN replaces 5310-00-018-7478?
5 possible matches (shared part number, not a government interchangeability claim): 1650-00-083-4093, 5920-00-284-7466, 6145-00-299-6256. Verify interchangeability with system specifications before substitution.
What are the specifications of 5310-00-018-7478?
Key specifications for 5310-00-018-7478: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM IN; Material Document and Classification: QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-018-7478 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.