NSN 5310-01-450-8959 · NIIN 014508959 · Part number 751-6408321 FIND 31
Naval Sea Systems Command · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 53711
Government record, cited
NSN 5310-01-450-8959 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-450-8959. Manufacturer of record part number: 751-6408321 FIND 31.
Also searched as5310-01-450-8959 ·
5310014508959 ·
NIIN 014508959 ·
01-450-8959 ·
FSC 5310 Nuts and Washers · CAGE 53711 · 751-6408321 FIND 31
Material Document and Classification: QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 2.250 INCHES NOMINAL IN
Material Thickness: 0.062 INCHES NOMINAL IN
External Straight Key Width: 0.690 INCHES NOMINAL IN
Material: NICKEL ALLOY 400 OVERALL
Hole Diameter: 1.560 INCHES NOMINAL IN
Identification
NSN: 5310-01-450-8959
NIIN: 014508959
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 751-6408321 FIND 31
Manufacturer: Naval Sea Systems Command
General Description
The Washer,key, cataloged under National Stock Number 5310-01-450-8959, 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
5310-01-450-8959
Primary Part Number
751-6408321 FIND 31
Item Name
Washer,key
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Style Designator
KEY
Material Document and Classification
QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
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 5310-01-450-8959?
NSN 5310-01-450-8959 is a Washer,key, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-450-8959?
NSN 5310-01-450-8959 has 1 manufacturer part number on file: 751-6408321 FIND 31 (Naval Sea Systems Command).
What are the specifications of 751-6408321 FIND 31?
Key specifications for 751-6408321 FIND 31: Style Designator: KEY; Material Document and Classification: QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 2.250 INCHES NOMINAL IN; Material Thickness: 0.062 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-450-8959 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.