S963A4-21
View detailed technical data, stock status, and sourcing information for: S963A4-21
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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, 1.768 inches nominal fastener length, 3a thread class, flat countersunk head style, 0.424 inches minimum thread 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
- 0.424 inches minimum
- Fastener Length
- 1.768 inches nominal
- Head Style
- flat countersunk
- Head Diameter
- 0.502 inches nominal
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 0.250 inches
- Width Across Flats
- 0.157 inches nominal
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 160000 pounds per square inch
- Countersink Angle
- 100.0 degrees nominal
- Material
- steel overall
- Surface Treatment
- cadmium 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 |
|---|---|
| S963A4-21 | Socket Head Cap Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-857-3530?
Does the NSN 5305-00-857-3530 have a Schedule B code assigned?
Does NSN 5305-00-857-3530 require demilitarization?
Does NSN 5305-00-857-3530 contain precious materials?
Does NSN 5305-00-857-3530 contain hazardous materials?
When the NSN 5305-00-857-3530 was assigned to the Federal Catalog?
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