NSN 5310-01-672-4663 · NIIN 016724663 · Part number 12600078-004
Oshkosh Defense Llc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 75Q65
Government record, cited
NSN 5310-01-672-4663 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-672-4663. Manufacturer of record part number: 12600078-004.
Also searched as5310-01-672-4663 ·
5310016724663 ·
NIIN 016724663 ·
01-672-4663 ·
FSC 5310 Nuts and Washers · CAGE 75Q65 · 12600078-004
Washer Outside Diameter: 26.0 MILLIMETERS MAXIMUM MM
Width Across Flats: 17.73 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM MM
Thread Series: M
Thread Pitch in Millimeters: 1.75
Material Document and Classification: ASTM F568M ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Direction: RIGHT-HAND
Nominal Thread Size: 12.0 MILLIMETERS MM
Identification
NSN: 5310-01-672-4663
NIIN: 016724663
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 12600078-004
Manufacturer: Oshkosh Defense Llc
General Description
The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-672-4663, 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
5310-01-672-4663
Primary Part Number
12600078-004
Item Name
Nut,self-Locking,extended Washer
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Oshkosh Defense Llc
Status
ACTIVE
Washer Outside Diameter
26.0 MILLIMETERS MAXIMUM MM
Width Across Flats
17.73 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM MM
Thread Series
M
Thread Pitch in Millimeters
1.75
Material Document and Classification
ASTM F568M ASSN STD 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 5310-01-672-4663?
NSN 5310-01-672-4663 is a Nut,self-Locking,extended Washer, manufactured by Oshkosh Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-672-4663?
NSN 5310-01-672-4663 has 1 manufacturer part number on file: 12600078-004 (Oshkosh Defense Llc).
What are the specifications of 12600078-004?
Key specifications for 12600078-004: Overall Height: 13.8 MILLIMETERS MAXIMUM MM; Washer Outside Diameter: 26.0 MILLIMETERS MAXIMUM MM; Width Across Flats: 17.73 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM MM; Thread Series: M. 10 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-672-4663 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.