NSN 5310-01-657-3501 · NIIN 016573501 · Part number 4169566
Oshkosh Defense Llc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 75Q65
Government record, cited
NSN 5310-01-657-3501 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-657-3501. Manufacturer of record part number: 4169566.
Also searched as5310-01-657-3501 ·
5310016573501 ·
NIIN 016573501 ·
01-657-3501 ·
FSC 5310 Nuts and Washers · CAGE 75Q65 · 4169566
Overall Diameter: 1.183 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN
Cross-Sectional Shape Style: RECTANGULAR
Color: BLACK OVERALL
Surface Treatment: PHOSPHATE AND ZINC OVERALL
Peripheral Shape Style: ROUND
Material: STEEL OVERALL
Center Hole Shape Style: ROUND
Identification
NSN: 5310-01-657-3501
NIIN: 016573501
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 4169566
Manufacturer: Oshkosh Defense Llc
General Description
The Washer,flat, cataloged under National Stock Number 5310-01-657-3501, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 9 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.
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 5310-01-657-3501?
NSN 5310-01-657-3501 is a Washer,flat, manufactured by Oshkosh Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-657-3501?
NSN 5310-01-657-3501 has 1 manufacturer part number on file: 4169566 (Oshkosh Defense Llc).
What are the specifications of 4169566?
Key specifications for 4169566: Overall Diameter: 1.183 INCHES MINIMUM AND 1.220 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Color: BLACK OVERALL; Surface Treatment: PHOSPHATE AND ZINC OVERALL. 9 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-657-3501 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.