6658788-1
View detailed technical data, stock status, and sourcing information for: 6658788-1
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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.
3a thread class, 0.375 inches nominal thread length, 0.875 inches nominal fastener length, flat countersunk head style, 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
- 3a
- Thread Direction
- right-hand
- Thread Length
- 0.375 inches nominal
- Fastener Length
- 0.875 inches nominal
- Head Style
- flat countersunk
- Head Diameter
- 0.531 inches nominal
- Locking Feature
- patch threads
- First Diameter From Head
- 0.175 inches nominal
- Distance From Largest Bearing Surface Of Head To End Of First Diameter
- 0.339 inches nominal
- Point Style
- flat
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 0.250 inches
- Width Across Flats
- 0.156 inches nominal
- Thread Quantity Per Inch
- 20
- Minimum Tensile Strength
- 80000 pounds per square inch
- Countersink Angle
- 80.0 degrees minimum and 84.0 degrees maximum
- Externally Relieved Body Diameter Quantity
- 1
- Material
- plastic nylon locking feature
- Material
- steel comp 316 fastener
- Material
- steel comp 316 overall
- Material Document And Classification
- 66 fed std single material response fastener
- Material Document And Classification
- 66 fed std single material response overall
- Material Document And Classification
- mil-f-18240 mil spec single material response locking feature
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response overall
- Thread Series Designator
- unc
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 |
|---|---|
| 6658788-1 | Externally Relieved Body Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-389-5956?
Does the NSN 5305-01-389-5956 have a Schedule B code assigned?
Does NSN 5305-01-389-5956 require demilitarization?
Does NSN 5305-01-389-5956 contain precious materials?
Does NSN 5305-01-389-5956 contain hazardous materials?
When the NSN 5305-01-389-5956 was assigned to the Federal Catalog?
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