5305-00-990-6431
Find complete technical information, availability, and procurement data for: 5305-00-990-6431
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Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-990-6431
Item Name Code
16282
Assigment Date
01/01/1962 (64 years ago)
right-hand thread direction, 0.445 inches minimum thread length, 3a thread class, flat chamfer head style, 0.500 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
- 3a
- Thread Direction
- right-hand
- Thread Length
- 0.445 inches minimum
- Fastener Length
- 0.500 inches nominal
- Head Style
- flat chamfer
- Head Diameter
- 0.365 inches minimum and 0.375 inches maximum
- Head Height
- 0.244 inches minimum and 0.250 inches maximum
- Hole Diameter
- 0.050 inches nominal
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 0.250 inches
- Width Across Flats
- 0.188 inches minimum and 0.190 inches maximum
- Hole Quantity
- 6
- Hole Type
- drilled
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell c minimum and 43.0 rockwell c maximum overall
- Minimum Yield Strength
- 130000 pounds per square inch
- Hole Configuration Style
- round internal hexagon
- Material
- steel overall
- Material Document And Classification
- 66 fed std single material response overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416,type 2 cl 3 fed spec all treatment responses 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Below is a list of NSNs that have been officially superseded by this NSN: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 |
|---|---|---|
| 5305-00-207-0960 | No Name Available | 09/24/2012 |
| 5305-00-550-0027 | No Name Available | 09/01/1984 |
| 5305-00-639-1331 | No Name Available | 11/07/1969 |
| 5306-00-639-7138 | No Name Available | 10/26/1972 |
| 5305-00-804-4372 | No Name Available | 01/01/1983 |
| 5305-01-007-7309 | No Name Available | 02/01/1976 |
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 |
|---|---|
| 7188604 | Socket Head Cap Screw |
| MS24678-20 | Socket Head Cap Screw |
| MS24678-20C | Socket Head Cap Screw |
| P15C7989-54 | Socket Head Cap Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-990-6431?
The FSCG of the NSN 5305-00-990-6431 is 5305
Does the NSN 5305-00-990-6431 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-990-6431 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5305-00-990-6431 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-00-990-6431 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5305-00-990-6431 was assigned to the Federal Catalog?
It was assigned 64 years ago, on Mon, Jan 1, 1962
Professional Distribution
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Pricing
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In Stock
This item is currently available and ready for prompt shipment. Units may be offered in various conditions — new, surplus, or refurbished — and stored at verified global facilities. Request a quote to confirm current stock and delivery time.
| New Surplus | 400 |
| New Material | 2,965 |
| As Removed | 1 |
| Serviceable | 4 |
| Total | 3,370 |
Availability of this item was last updated on:
01/20/2026 12:01 AM EST.
Stock levels and pricing are subject to change.