NSN 5310-01-666-3298 · NIIN 016663298 · Part number 25KP631
Oshkosh Defense Llc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 75Q65
Government record, cited
NSN 5310-01-666-3298 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-666-3298. Manufacturer of record part number: 25KP631.
Also searched as5310-01-666-3298 ·
5310016663298 ·
NIIN 016663298 ·
01-666-3298 ·
FSC 5310 Nuts and Washers · CAGE 75Q65 · 25KP631
Width Across Flats: 16.73 MILLIMETERS MINIMUM AND 17.00 MILLIMETERS MAXIMUM MM
Thread Series: M
Thread Pitch in Millimeters: 1.5
Thread Direction: RIGHT-HAND
Nominal Thread Size: 10.0 MILLIMETERS MM
Nut Height: 7.64 MILLIMETERS MINIMUM AND 8.00 MILLIMETERS MAXIMUM MM
Nut Style: HEXAGON
Identification
NSN: 5310-01-666-3298
NIIN: 016663298
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 25KP631
Manufacturer: Oshkosh Defense Llc
General Description
The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-666-3298, 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 10 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
5310-01-666-3298
Primary Part Number
25KP631
Item Name
Nut,plain,hexagon
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Oshkosh Defense Llc
Status
ACTIVE
Width Across Flats
16.73 MILLIMETERS MINIMUM AND 17.00 MILLIMETERS MAXIMUM MM
Thread Series
M
Thread Pitch in Millimeters
1.5
Thread Direction
RIGHT-HAND
Nominal Thread Size
10.0 MILLIMETERS MM
Nut Height
7.64 MILLIMETERS MINIMUM AND 8.00 MILLIMETERS MAXIMUM MM
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 5310-01-666-3298?
NSN 5310-01-666-3298 is a Nut,plain,hexagon, manufactured by Oshkosh Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-666-3298?
NSN 5310-01-666-3298 has 1 manufacturer part number on file: 25KP631 (Oshkosh Defense Llc).
What are the specifications of 25KP631?
Key specifications for 25KP631: Width Across Flats: 16.73 MILLIMETERS MINIMUM AND 17.00 MILLIMETERS MAXIMUM MM; Thread Series: M; Thread Pitch in Millimeters: 1.5; Thread Direction: RIGHT-HAND. 10 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-666-3298 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.