58-21-213-24
View detailed technical data, stock status, and sourcing information for: 58-21-213-24
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An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes:undercut for thread relief). It is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also bolt, externally relieved body and bolt, internal wrenching.
2a thread class, knurled no. 1 head style, 0.250 inches maximum thread length, 1.188 inches maximum 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
- 0.250 inches maximum
- Fastener Length
- 1.188 inches maximum
- Head Style
- knurled no. 1
- Head Diameter
- 0.562 inches maximum
- Head Height
- 0.250 inches maximum
- First Diameter From Head
- 0.185 inches maximum
- Distance From Largest Bearing Surface Of Head To End Of First Diameter
- 0.813 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.250 inches
- Features Provided
- casehardened
- Thread Quantity Per Inch
- 20
- Externally Relieved Body Diameter Quantity
- 1
- Material
- steel comp 303 overall
- Material Document And Classification
- qq-s-763 fed spec single material response overall
- Surface Treatment
- passivate overall
- 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Below is a list of NSNs that have been officially superseded by this NSN: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 |
|---|---|---|
| 5305-00-606-5296 | No Name Available | 04/03/1969 |
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 |
|---|---|
| 0N089069-21 | Externally Relieved Body Screw |
| 58-21-213-24 | Externally Relieved Body Screw |
| 765694-040 | Externally Relieved Body Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-051-6862?
Does the NSN 5305-00-051-6862 have a Schedule B code assigned?
Does NSN 5305-00-051-6862 require demilitarization?
Does NSN 5305-00-051-6862 contain precious materials?
Does NSN 5305-00-051-6862 contain hazardous materials?
When the NSN 5305-00-051-6862 was assigned to the Federal Catalog?
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