Width Across Flats: 3.625 INCHES MINIMUM AND 3.750 INCHES MAXIMUM IN
Material Document and Classification: ASTM A194 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nut Height: 1.401 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN
Nut Style: HEXAGON
Material: STEEL COMP 304 OVERALL
Bearing Surface Type: FLAT
Reference Number Differentiating Characteristics: CERTIFIED FREE FROM MERCURY CONTAMINATION
Identification
NSN: 5310-00-003-6683
NIIN: 000036683
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
General Description
The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-003-6683, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-003-6683
Item Name
Nut,plain,hexagon
FSC / FSG
5310 / 53 — Nuts and Washers
Status
ACTIVE
Width Across Flats
3.625 INCHES MINIMUM AND 3.750 INCHES MAXIMUM IN
Material Document and Classification
ASTM A194 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nut Height
1.401 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN
Nut Style
HEXAGON
Material
STEEL COMP 304 OVERALL
Bearing Surface Type
FLAT
Reference Number Differentiating Characteristics
CERTIFIED FREE FROM MERCURY CONTAMINATION
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
NW5309PC4
3/9Design control — primary reference
National Annealing Box Co
No interchangeability data on file.
Other items in FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-001-5340
5310-00-001-5340 · Item name not on file
5310-00-004-4584
5310-00-004-4584 · Item name not on file
5310-00-004-5157
5310-00-004-5157 · Item name not on file
5310-00-004-7045
5310-00-004-7045 · Item name not on file
5310-00-004-7046
WASHER,RECESSED
5310-00-005-4375
NUT,PLAIN,RECTANGULAR
5310-00-006-8067
5310-00-006-8067 · Item name not on file
5310-00-007-2907
5310-00-007-2907 · Item name not on file
Frequently Asked Questions
What is NSN 5310-00-003-6683?
NSN 5310-00-003-6683 is a Nut,plain,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
What are the specifications of 5310-00-003-6683?
Key specifications for 5310-00-003-6683: Width Across Flats: 3.625 INCHES MINIMUM AND 3.750 INCHES MAXIMUM IN; Material Document and Classification: ASTM A194 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Nut Height: 1.401 INCHES MINIMUM AND 1.505 INCHES MAXIMUM IN; Nut Style: HEXAGON. 7 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-003-6683 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.