C387H4-19
View detailed technical data, stock status, and sourcing information for: C387H4-19
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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.
0.377 inches minimum thread length, right-hand thread direction, 3a thread class, flat countersunk head style, 1.565 inches nominal fastener length
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
- 0.377 inches minimum
- Fastener Length
- 1.565 inches nominal
- Head Style
- flat countersunk
- Head Diameter
- 0.429 inches minimum and 0.439 inches maximum
- Internal Drive Style
- torque set
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity Per Inch
- 28
- Hardness Rating
- 46.0 rockwell c minimum and 50.0 rockwell c maximum
- Countersink Angle
- 60.0 degrees nominal
- Screw Material
- steel comp h11
- Screw Material Document And Classification
- ams6485 assn std single material response
- Screw Surface Treatment
- cadmium or nickel
- 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 |
|---|---|
| C387H4-19 | Machine Screw |
| HR101H4-19 | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-928-9539?
Does the NSN 5305-00-928-9539 have a Schedule B code assigned?
Does NSN 5305-00-928-9539 require demilitarization?
Does NSN 5305-00-928-9539 contain precious materials?
Does NSN 5305-00-928-9539 contain hazardous materials?
When the NSN 5305-00-928-9539 was assigned to the Federal Catalog?
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