MS18066-32
View detailed technical data, stock status, and sourcing information for: MS18066-32
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A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.
0.428 inches minimum and 0.448 inches maximum fastener length, 3a thread class, right-hand thread direction, headless (setscrew) head style, patch or pellet or strip threads locking feature
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 3a
- Thread Direction
- right-hand
- Fastener Length
- 0.428 inches minimum and 0.448 inches maximum
- Head Style
- headless (setscrew)
- Locking Feature
- patch or pellet or strip threads
- Point Style
- flat
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 0.250 inches
- Width Across Flats
- 0.125 inches minimum and 0.127 inches maximum
- Thread Quantity Per Inch
- 28
- Material
- plastic polyamide (nylon) locking feature
- Material
- steel comp 302 or steel comp 303 or steel comp 304 or steel comp 316 fastener
- Material Document And Classification
- 66 fed std all material responses fastener
- Surface Treatment
- passivate fastener
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response fastener
- Thread Series Designator
- unf
- Nondefinitive Spec/Std Data
- 1 type and 1 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 |
|---|---|
| MS18066-32 | Setscrew |
FAQs
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What is the FSCG of the NSN 5305-01-278-5070?
Does the NSN 5305-01-278-5070 have a Schedule B code assigned?
Does NSN 5305-01-278-5070 require demilitarization?
Does NSN 5305-01-278-5070 contain precious materials?
Does NSN 5305-01-278-5070 contain hazardous materials?
When the NSN 5305-01-278-5070 was assigned to the Federal Catalog?
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