5305-01-258-8499
Find complete technical information, availability, and procurement data for: 5305-01-258-8499
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A headed, threaded fastening device over which may be assembled; (1) a stand-off; (2) a flanged bushing with washer(s) and/or a shouldered bushing without a flange, or it may have an internally threaded sleeve that is an integral part of the screw; a washer and an externally thread self-locking bushing that is driven by an inserted driver. Attached to panel by threaded bushing or by flaring end of stand-off, or bushing. Used in conjunction with a speed nut, nut plate, or driven into a threaded hole in the item that the panel is fastened to. May be spring loaded.
right-hand thread direction, 3a thread class, flat countersunk head style, 0.378 inches minimum and 0.428 inches maximum thread length, 1.263 inches minimum and 1.293 inches maximum 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
- 0.378 inches minimum and 0.428 inches maximum
- Fastener Length
- 1.263 inches minimum and 1.293 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.350 inches minimum and 0.399 inches maximum
- Grip Diameter
- 0.249 inches minimum and 0.250 inches maximum
- Internal Drive Style
- offset cruciform (torque set)
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.865 inches minimum and 0.885 inches maximum
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Surface Finish
- 32.0 microinches grip
- Surface Finish
- 32.0 microinches threads
- Special Features
- internal drive ribbed
- Material
- titanium alloy uns r56400 overall
- Material Document And Classification
- ams 4928 assn std single material response or ams 4967 assn std single material response overall
- Thread Series Designator
- unjf
- Specification/Standard Data
- 80205-nas1581 professional/industrial association standard
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-01-359-0241 | No Name Available | 03/01/1998 |
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 |
|---|---|
| NAS1581K4R14 | Close Tolerance Screw |
| NAS1581V4R14 | Close Tolerance Screw |
FAQs
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Does NSN 5305-01-258-8499 require demilitarization?
Does NSN 5305-01-258-8499 contain precious materials?
Does NSN 5305-01-258-8499 contain hazardous materials?
When the NSN 5305-01-258-8499 was assigned to the Federal Catalog?
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