021-12320
View detailed technical data, stock status, and sourcing information for: 021-12320
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A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.
2.250 inches minimum and 2.562 inches maximum thread length, 2.610 inches minimum and 2.750 inches maximum fastener length, hexagon head style, 2a thread class, 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
- 2.250 inches minimum and 2.562 inches maximum
- Fastener Length
- 2.610 inches minimum and 2.750 inches maximum
- Head Style
- hexagon
- Head Height
- 0.591 inches minimum and 0.627 inches maximum
- Width Between Flats
- 1.469 inches minimum and 1.500 inches maximum
- Hole Diameter
- 0.125 inches nominal
- Nominal Thread Diameter
- 1.000 inches
- Hole Quantity
- 1
- Hole Type
- drilled
- Thread Quantity Per Inch
- 8
- Minimum Tensile Strength
- 115000 pounds per square inch
- Hardness Rating
- 22.0 rockwell c minimum and 32.0 rockwell c maximum overall
- Minimum Yield Strength
- 78000 pounds per square inch
- Hole Configuration Style
- hexagon flats
- Material
- steel overall
- Material Document And Classification
- sae gr 5 assn std single material response overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416 ty 2 cl 3 fed spec single treatment response 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Below is a list of NSNs that have been officially superseded by this NSN: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 |
|---|---|---|
| 5305-00-639-0234 | No Name Available | 05/01/1974 |
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 |
|---|---|
| 021-12320 | Hexagon Head Cap Screw |
| 476-74411REVA1 ITEM 55 | Hexagon Head Cap Screw |
| MS51095-512 | Hexagon Head Cap Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-932-5660?
Does the NSN 5305-00-932-5660 have a Schedule B code assigned?
Does NSN 5305-00-932-5660 require demilitarization?
Does NSN 5305-00-932-5660 contain precious materials?
Does NSN 5305-00-932-5660 contain hazardous materials?
When the NSN 5305-00-932-5660 was assigned to the Federal Catalog?
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Pricing
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