MS51971-18
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An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.
right-hand thread direction, 3.625 inches minimum and 3.750 inches maximum width across flats, hexagon nut style, 2b thread class, 2.089 inches minimum and 2.193 inches maximum nut height
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 2b
- Thread Direction
- right-hand
- Nut Style
- hexagon
- Nut Height
- 2.089 inches minimum and 2.193 inches maximum
- Width Across Flats
- 3.625 inches minimum and 3.750 inches maximum
- Thread Series
- unc
- Thread Quantity Per Inch
- 4
- Nominal Thread Size
- 2.500 inches
- Bearing Surface Type
- chamfered or washer faced
- Material
- steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316 or steel comp 317 or steel comp 347 overall
- Material Document And Classification
- 66 fed std all material responses overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response overall
- Nondefinitive Spec/Std Data
- 2 type and 4 style
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 |
|---|---|
| D2577 PIECE | Hexagon Plain Nut |
| D2577 PIECE-6 | Hexagon Plain Nut |
| MS51971-18 | Hexagon Plain Nut |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5310-00-467-0395?
Does the NSN 5310-00-467-0395 have a Schedule B code assigned?
Does NSN 5310-00-467-0395 require demilitarization?
Does NSN 5310-00-467-0395 contain precious materials?
Does NSN 5310-00-467-0395 contain hazardous materials?
When the NSN 5310-00-467-0395 was assigned to the Federal Catalog?
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