NSN 5310-01-666-0960 · NIIN 016660960 · Part number 1808399-5
Northrop Grumman Systems Corporation · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 03956
Government record, cited
NSN 5310-01-666-0960 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-666-0960. Manufacturer of record part number: 1808399-5.
Also searched as5310-01-666-0960 ·
5310016660960 ·
NIIN 016660960 ·
01-666-0960 ·
FSC 5310 Nuts and Washers · CAGE 03956 · 1808399-5
Overall Diameter: 11.57 INCHES MINIMUM AND 12.00 INCHES MAXIMUM IN
Cross-Sectional Shape Style: BLANK RECTANGULAR
Peripheral Shape Style: ROUND
Material: STEEL COMP 302 AND STEEL COMP 304 AND STEEL COMP 316 OVERALL
Center Hole Shape Style: ROUND
Hole Diameter: 6.40 INCHES MINIMUM AND 6.62 INCHES MAXIMUM IN
Thickness: 1.2 INCHES MINIMUM AND 1.8 INCHES MAXIMUM IN
Identification
NSN: 5310-01-666-0960
NIIN: 016660960
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 1808399-5
Manufacturer: Northrop Grumman Systems Corporation
General Description
The Washer,flat, cataloged under National Stock Number 5310-01-666-0960, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-01-666-0960
Primary Part Number
1808399-5
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Northrop Grumman Systems Corporation
Status
ACTIVE
Overall Diameter
11.57 INCHES MINIMUM AND 12.00 INCHES MAXIMUM IN
Cross-Sectional Shape Style
BLANK RECTANGULAR
Peripheral Shape Style
ROUND
Material
STEEL COMP 302 AND STEEL COMP 304 AND STEEL COMP 316 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 5310-01-666-0960?
NSN 5310-01-666-0960 is a Washer,flat, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-666-0960?
NSN 5310-01-666-0960 has 2 manufacturer part numbers on file: 1808399-5 (Northrop Grumman Systems Corporation), 1808399-5 (Allmetal Screw Products Corp).
What are the specifications of 1808399-5?
Key specifications for 1808399-5: Overall Diameter: 11.57 INCHES MINIMUM AND 12.00 INCHES MAXIMUM IN; Cross-Sectional Shape Style: BLANK RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL COMP 302 AND STEEL COMP 304 AND STEEL COMP 316 OVERALL. 7 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-666-0960 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.