MS20018-42
View detailed technical data, stock status, and sourcing information for: MS20018-42
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An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also screw, cap, socket head. Excludes:setscrew; screw, shoulder; bolt, shoulder; screw, externally relieved body; bolt, externally relieved body; and screw, machine.
1.475 inches minimum and 1.525 inches maximum thread length, right-hand thread direction, 4.110 inches minimum and 4.140 inches maximum fastener length, 3a thread class, bevel-conical head 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
- 3a
- Thread Direction
- right-hand
- Thread Length
- 1.475 inches minimum and 1.525 inches maximum
- Fastener Length
- 4.110 inches minimum and 4.140 inches maximum
- Head Style
- bevel-conical
- Head Diameter
- 1.865 inches minimum and 1.875 inches maximum
- Head Height
- 1.125 inches nominal
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 1.125 inches
- Width Across Flats
- 0.751 inches minimum and 0.755 inches maximum
- Thread Quantity Per Inch
- 12
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 34.0 rockwell c minimum and 40.0 rockwell c maximum overall
- Material
- steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740 overall
- Material Document And Classification
- mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6049 mil spec 5th material response overall
- Surface Treatment
- cadmium and chromate overall
- Thread Series Designator
- unf
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 |
|---|---|
| MS20018-42 | Internal Wrenching Bolt |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5306-00-639-1795?
Does the NSN 5306-00-639-1795 have a Schedule B code assigned?
Does NSN 5306-00-639-1795 require demilitarization?
Does NSN 5306-00-639-1795 contain precious materials?
Does NSN 5306-00-639-1795 contain hazardous materials?
When the NSN 5306-00-639-1795 was assigned to the Federal Catalog?
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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 | 1 |
| New Material | 75 |
| As Removed | 1 |
| Total | 77 |