MTL2C440M
View detailed technical data, stock status, and sourcing information for: MTL2C440M
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Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5310 Nuts and Washers
National Stock Number
5310-00-728-8528
Item Name Code
05280
Assigment Date
01/01/1961 (65 years ago)
A nut with a flanged base of varied shapes which may be plain or mounted by rivets, bolts, welding or integral prongs. An integral feature is incorporated for locking on the threads of a mating member.
3b thread class, right-hand thread direction, prevailing torque all metal design locking feature, 0.098 inches minimum and 0.103 inches maximum mounting hole diameter, dry film lubricant lubrication
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 all metal design
- Lubrication
- dry film lubricant
- Mounting Hole Diameter
- 0.098 inches minimum and 0.103 inches maximum
- Nut Style
- plate
- Nut Length
- 0.630 inches maximum
- Nut Height
- 0.143 inches maximum
- Plate Thickness
- 0.040 inches maximum
- Plate Width
- 0.140 inches minimum and 0.260 inches maximum
- Nut Mounting Provision
- straight holes
- Mounting Hole Arrangement Style
- 2 holes
- Distance From Aperture Center To Mounting Hole Center
- 0.203 inches nominal
- Center To Center Distance Between Mounting Holes Along Length
- 0.404 inches minimum and 0.408 inches maximum
- Temp Rating
- 450.0 fahrenheit nominal
- Thread Series
- unjc
- Thread Quantity Per Inch
- 40
- Hardness Rating
- 49.0 rockwell c maximum
- Nominal Thread Size
- 0.112 inches
- Material
- iron alloy 660 overall
- Material Document And Classification
- ams 5525 assn std single material response or ams 5732 assn std single material response or ams 5737 assn std single material response overall
- Surface Treatment
- passivate overall
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 |
|---|---|
| 10121627 | Plate Self-Locking Nut |
| 418464-704 | Plate Self-Locking Nut |
| M 12700E-40 | Plate Self-Locking Nut |
| MS21070L04 | Plate Self-Locking Nut |
| MTL2C440M | Plate Self-Locking Nut |
| RM200C04M | Plate Self-Locking Nut |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5310-00-728-8528?
The FSCG of the NSN 5310-00-728-8528 is 5310
Does the NSN 5310-00-728-8528 have a Schedule B code assigned?
Yes, the Schedule B code is 7318160000
Does NSN 5310-00-728-8528 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 5310-00-728-8528 contain precious materials?
Precious metal content is unknown
Does NSN 5310-00-728-8528 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 5310-00-728-8528 was assigned to the Federal Catalog?
It was assigned 65 years ago, on Sun, Jan 1, 1961
Professional Distribution
Certified to meet the strict requirements of defense, aerospace, and hazardous materials distribution.
- ITAR Registered
- DDTC Registered
- HAZMAT Certified
- AS9120 Quality Standards
- 100% Quality Inspections
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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 Surplus | 405 |
| New Material | 9,550 |
| Total | 9,955 |
Availability of this item was last updated on:
07/17/2026 11:07 AM EDT.
Stock levels and pricing are subject to change.