Washer, Flat 5310-01-409-0289 NSN 5310-01-409-0289 · NIIN 014090289 · Part number 801-6641188FNA44
Naval Sea Systems Command · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 53711
NSN 5310-01-409-0289 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-409-0289. Manufacturer of record part number: 801-6641188FNA44 .
Also searched as
5310-01-409-0289 ·
5310014090289 ·
NIIN 014090289 ·
01-409-0289 ·
FSC 5310 Nuts and Washers · CAGE 53711 · 801-6641188FNA44
Nearby stock numbers
← 5310-01-409-0286 Washer, Flat
·
5310-01-409-0295 Washer, Shouldered →
AF 0.625 INCHES NOMINAL IN
NUT + WASHER
5310-01-409-0289 — Nuts and Washers
Features
Washer,flat — FSC 5310 Overall Diameter: 0.625 INCHES NOMINAL IN Cross-Sectional Shape Style: RECTANGULAR Peripheral Shape Style: ROUND Material: STEEL COMP 304 OVERALL Center Hole Shape Style: ROUND Hole Diameter: 0.390 INCHES NOMINAL IN Thickness: 0.063 INCHES NOMINAL IN
Identification
NSN: 5310-01-409-0289
NIIN: 014090289
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 801-6641188FNA44
Manufacturer: Naval Sea Systems Command
General Description
The Washer,flat, cataloged under National Stock Number 5310-01-409-0289, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter Value NSN 5310-01-409-0289 Primary Part Number 801-6641188FNA44 Item Name Washer,flat FSC / FSG 5310 / 53 — Nuts and Washers Manufacturer Naval Sea Systems Command Status ACTIVE Overall Diameter 0.625 INCHES NOMINAL IN Cross-Sectional Shape Style RECTANGULAR Peripheral Shape Style ROUND Material STEEL COMP 304 OVERALL Center Hole Shape Style ROUND Hole Diameter 0.390 INCHES NOMINAL IN Thickness 0.063 INCHES NOMINAL 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
Cross-Reference Index
Part Number Manufacturer
801-6641188FNA44 PRIMARY Naval Sea Systems Command (USA)
No interchangeability data on file.
Other items in FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040
5310-00-000-0040 · Item name not on file
5310-00-000-0077
NUT,PLAIN,ROUND
5310-00-000-0079
WASHER,FLAT
5310-00-000-0079
WASHER,FLAT
5310-00-000-1146
5310-00-000-1146 · Item name not on file
5310-00-000-3815
5310-00-000-3815 · Item name not on file
5310-00-000-4532
5310-00-000-4532 · Item name not on file
5310-00-000-4540
5310-00-000-4540 · Item name not on file
Frequently Asked Questions
What is NSN 5310-01-409-0289?
NSN 5310-01-409-0289 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-409-0289?
NSN 5310-01-409-0289 has 1 manufacturer part number on file: 801-6641188FNA44 (Naval Sea Systems Command).
What are the specifications of 801-6641188FNA44?
Key specifications for 801-6641188FNA44: Overall Diameter: 0.625 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL COMP 304 OVERALL. 7 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-409-0289 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.
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