C-328
View detailed technical data, stock status, and sourcing information for: C-328
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Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5310 Nuts and Washers
National Stock Number
5310-00-497-3891
Item Name Code
05277
Assigment Date
01/01/1963 (63 years ago)
A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes:nut (1), self-locking, cap.
3b thread class, 0.453 inches nominal nut height, prevailing torque with nonmetallic insert locking feature, right-hand thread direction, hexagon nut style
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 3b
- Thread Direction
- right-hand
- Locking Feature
- prevailing torque with nonmetallic insert
- Nut Style
- hexagon
- Nut Height
- 0.453 inches nominal
- Width Across Flats
- 0.625 inches nominal
- Temp Rating
- 250.0 fahrenheit nominal
- Thread Series
- unf
- Thread Quantity Per Inch
- 20
- Nominal Thread Size
- 0.438 inches
- Bearing Surface Type
- flat
- Material
- steel overall
- Surface Treatment
- cadmium or zinc overall
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5310-00-262-6370 | No Name Available | 01/01/1961 |
| 5310-00-297-2541 | No Name Available | 08/01/1985 |
| 5310-00-576-1004 | No Name Available | 01/01/1963 |
| 5310-00-834-3510 | No Name Available | 01/01/1960 |
Related Parts
This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:
| Part Number | Name |
|---|---|
| 1137-720 | Hexagon Self-Locking Nut |
| 12Z2007-205 | Hexagon Self-Locking Nut |
| 52NE070 | Hexagon Self-Locking Nut |
| 67MAP1 | Hexagon Self-Locking Nut |
| 69509-46 | Hexagon Self-Locking Nut |
| A22301-7 | Hexagon Self-Locking Nut |
| AN365-720A | Hexagon Self-Locking Nut |
| C-328 | Hexagon Self-Locking Nut |
| MEP-00010120 | Hexagon Self-Locking Nut |
| MS20365-720A | Hexagon Self-Locking Nut |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5310-00-497-3891?
The FSCG of the NSN 5310-00-497-3891 is 5310
Does the NSN 5310-00-497-3891 have a Schedule B code assigned?
Yes, the Schedule B code is 7318160000
Does NSN 5310-00-497-3891 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5310-00-497-3891 contain precious materials?
Precious metal content is unknown
Does NSN 5310-00-497-3891 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5310-00-497-3891 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963
Professional Distribution
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- ITAR Registered
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- AS9120 Quality Standards
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Pricing
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In Stock
This item is currently available and ready for prompt shipment. Units may be offered in various conditions — new, surplus, or refurbished — and stored at verified global facilities. Request a quote to confirm current stock and delivery time.
| New Material | 13,747 |
| New Surplus | 492 |
| As Removed | 1 |
| Serviceable | 1 |
| Total | 14,241 |
Availability of this item was last updated on:
01/21/2026 03:01 AM EST.
Stock levels and pricing are subject to change.