NM40
View detailed technical data, stock status, and sourcing information for: NM40
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Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5310 Nuts and Washers
National Stock Number
5310-00-982-4999
Item Name Code
05277
Assigment Date
01/01/1962 (64 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.
hexagon nut style, right-hand thread direction, 3b thread class, prevailing torque with nonmetallic insert locking feature, soluble 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 with nonmetallic insert
- Lubrication
- soluble lubricant
- Nut Style
- hexagon
- Nut Height
- 0.133 inches minimum and 0.157 inches maximum
- End Item Identification
- mrap - rg-33; multiple launch rocket system (mlrs); armored multi-purpose vehicle (ampv)
- Width Across Flats
- 0.243 inches minimum and 0.251 inches maximum
- Temp Rating
- 250.0 fahrenheit nominal
- Thread Series
- unjc
- Thread Quantity Per Inch
- 40
- Nominal Thread Size
- 0.112 inches
- Countersink Angle
- 88.0 degrees nominal nut
- Bearing Surface Type
- chamfered or washer faced
- Bearing Surface Finish
- 125.0 microinches
- Material
- steel comp 302 or steel comp 303 or steel comp 304 nut
- Material Document And Classification
- ams 5688 assn std 1st material response or ams 5640 assn std 2nd material response or ams 5647 assn std 3rd material response nut
- Surface Treatment
- passivate overall except insert
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response overall except insert
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5310-00-050-3573 | No Name Available | 10/16/1996 |
| 5310-00-543-5258 | No Name Available | 03/01/1991 |
| 5310-00-808-5667 | No Name Available | 02/12/1968 |
| 5310-01-133-0765 | No Name Available | 06/01/1991 |
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 |
|---|---|
| 002-003645-001 | Hexagon Self-Locking Nut |
| 0921-1 | Hexagon Self-Locking Nut |
| 10121907 | Hexagon Self-Locking Nut |
| 108633-707 | Hexagon Self-Locking Nut |
| 114-0230-001 | Hexagon Self-Locking Nut |
| 2074287-2204 | Hexagon Self-Locking Nut |
| 21785-10142 | Hexagon Self-Locking Nut |
| 333-1299-00 | Hexagon Self-Locking Nut |
| 333-1299-000 | Hexagon Self-Locking Nut |
| 4158067-001 | Hexagon Self-Locking Nut |
| 4158067-1 | Hexagon Self-Locking Nut |
| 418400-17 | Hexagon Self-Locking Nut |
| 5184004-40 | Hexagon Self-Locking Nut |
| 5310PL0947344 | Hexagon Self-Locking Nut |
| 5310PL1389891 | Hexagon Self-Locking Nut |
| 752-9502-004 | Hexagon Self-Locking Nut |
| 79NM-40 | Hexagon Self-Locking Nut |
| 946536-1200 | Hexagon Self-Locking Nut |
| 97000369 | Hexagon Self-Locking Nut |
| F79NM-40 | Hexagon Self-Locking Nut |
| L79NM-440 | Hexagon Self-Locking Nut |
| MS21044 C04 | Hexagon Self-Locking Nut |
| MS21044-004 | Hexagon Self-Locking Nut |
| MS21044C04 | Hexagon Self-Locking Nut |
| MS21C44C04 | Hexagon Self-Locking Nut |
| NM40 | Hexagon Self-Locking Nut |
| R10249P2 | Hexagon Self-Locking Nut |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5310-00-982-4999?
The FSCG of the NSN 5310-00-982-4999 is 5310
Does the NSN 5310-00-982-4999 have a Schedule B code assigned?
Yes, the Schedule B code is 7318160000
Does NSN 5310-00-982-4999 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 5310-00-982-4999 contain precious materials?
Item does not contain precious metal.
Does NSN 5310-00-982-4999 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 5310-00-982-4999 was assigned to the Federal Catalog?
It was assigned 64 years ago, on Mon, Jan 1, 1962
Professional Distribution
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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 | 4,384 |
| New Material | 37,083 |
| Serviceable | 4 |
| Total | 41,471 |
Availability of this item was last updated on:
04/08/2026 03:04 PM EDT.
Stock levels and pricing are subject to change.