139437
View detailed technical data, stock status, and sourcing information for: 139437
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A tubular shaped unthreaded item with or without a flange at one end designed to be inserted into a hole to reduce the inside diameter of the hole and to protect the surrounding body structure from damage resulting from stress, strain, and/or vibration. The overall length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body. Includes items which are divided into two or more segments which includes 180 degrees (3.141 radians) or less of the bearing periphery. For items made of rubber, see bushing, nonmetallic. See also bearing, sleeve; bushing, tapered; spacer, sleeve; insulator, bushing; and bushing, electrical conductor. Excludes:bushing, drill, jig.
flat countersunk head style, 2a thread class, right-hand thread direction, 0.938 inches nominal thread length, 2.813 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
- 2a
- Thread Direction
- right-hand
- Thread Length
- 0.938 inches nominal
- Fastener Length
- 2.813 inches nominal
- Head Style
- flat countersunk
- Head Diameter
- 0.312 inches nominal
- Head Height
- 0.312 inches nominal
- First Diameter From Head
- 0.562 inches nominal
- Second Diameter From Head
- 0.500 inches nominal
- Third Diameter From Head
- 0.562 inches nominal
- Fourth Diameter From Head
- 0.500 inches nominal
- Distance From Largest Bearing Surface Of Head To End Of First Diameter
- 0.500 inches nominal
- Distance From Largest Bearing Surface Of Head To End Of Second Diameter
- 1.062 inches nominal
- Distance From Largest Bearing Surface Of Head To End Of Third Diameter
- 2.062 inches nominal
- Distance From Largest Bearing Surface Of Head To End Of Fourth Diameter
- 2.812 inches nominal
- Nominal Thread Diameter
- 0.562 inches
- Thread Quantity Per Inch
- 18
- Externally Relieved Body Diameter Quantity
- 4
- Material
- steel overall
- Thread Series Designator
- unf
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 2815-00-085-7468 | No Name Available | 01/01/1960 |
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 |
|---|---|
| 139437 | Externally Relieved Body Bolt |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5306-00-994-4431?
Does the NSN 5306-00-994-4431 have a Schedule B code assigned?
Does NSN 5306-00-994-4431 require demilitarization?
Does NSN 5306-00-994-4431 contain precious materials?
Does NSN 5306-00-994-4431 contain hazardous materials?
When the NSN 5306-00-994-4431 was assigned to the Federal Catalog?
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