257961
View detailed technical data, stock status, and sourcing information for: 257961
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An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.
0.250 inches nominal fastener length, 3a thread class, 0.250 inches maximum thread length, right-hand thread direction, headless (setscrew) head style
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
- 0.250 inches maximum
- Fastener Length
- 0.250 inches nominal
- Head Style
- headless (setscrew)
- Point Style
- cup
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 0.112 inches
- Width Across Flats
- 0.050 inches nominal
- Thread Quantity Per Inch
- 40
- Hardness Rating
- 45.0 rockwell c minimum and 53.0 rockwell c maximum overall
- Material
- steel comp 4037 or steel comp 4137 or steel comp 4140 or steel comp 8630 or steel comp 8740 overall
- Material Document And Classification
- 66 fed std all material responses overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416,ty 2,cl 3 fed spec all treatment responses 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Below is a list of NSNs that have been officially superseded by this NSN: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 |
|---|---|---|
| 5305-00-081-9733 | No Name Available | 01/07/1970 |
| 5305-00-137-7531 | No Name Available | 02/01/2008 |
| 5305-00-225-7256 | No Name Available | 07/09/2001 |
| 5305-00-249-0001 | No Name Available | 06/04/2008 |
| 5305-00-297-2844 | No Name Available | 06/01/2007 |
| 5305-00-317-4724 | No Name Available | 02/01/2007 |
| 5305-00-453-6459 | No Name Available | 10/12/1970 |
| 5305-00-790-0854 | No Name Available | 01/20/1971 |
| 5305-00-811-8148 | No Name Available | 09/01/2023 |
| 5305-00-893-7568 | No Name Available | 08/10/1966 |
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 |
|---|---|
| 113990 | Setscrew |
| 257961 | Setscrew |
| 328-5030-000 | Setscrew |
| 365002-3 | Setscrew |
| 851958 | Setscrew |
| 851958-00 | Setscrew |
| 8888539-703 | Setscrew |
| H95015X11 | Setscrew |
| MS51017-11 | Setscrew |
| MS51055-23 | Setscrew |
| MS51963-11 | Setscrew |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-717-6948?
Does the NSN 5305-00-717-6948 have a Schedule B code assigned?
Does NSN 5305-00-717-6948 require demilitarization?
Does NSN 5305-00-717-6948 contain precious materials?
Does NSN 5305-00-717-6948 contain hazardous materials?
When the NSN 5305-00-717-6948 was assigned to the Federal Catalog?
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Pricing
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