639122-350
View detailed technical data, stock status, and sourcing information for: 639122-350
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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.
pan no. 2 head style, 0.562 inches maximum thread length, 2a thread class, 0.562 inches nominal fastener length, right-hand thread direction
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 2a
- Thread Direction
- right-hand
- Thread Length
- 0.562 inches maximum
- Fastener Length
- 0.562 inches nominal
- Head Style
- pan no. 2
- Head Diameter
- 0.256 inches minimum and 0.270 inches maximum
- Head Height
- 0.087 inches minimum and 0.097 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.138 inches
- Thread Quantity Per Inch
- 32
- Screw Material
- steel corrosion resisting
- Screw Surface Treatment
- passivate
- Thread Series Designator
- unc
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-00-285-3208 | Machine Screw | 07/01/2025 |
| 5305-00-835-7336 | No Name Available | 02/10/1967 |
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 |
|---|---|
| 343-0172-000 | Machine Screw |
| 639122-350 | Machine Screw |
| 8914387-14 | Machine Screw |
| P343-0172-00 | Machine Screw |
| P343-0172-000 | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-685-4309?
Does the NSN 5305-00-685-4309 have a Schedule B code assigned?
Does NSN 5305-00-685-4309 require demilitarization?
Does NSN 5305-00-685-4309 contain precious materials?
Does NSN 5305-00-685-4309 contain hazardous materials?
When the NSN 5305-00-685-4309 was assigned to the Federal Catalog?
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Pricing
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