21023A
View detailed technical data, stock status, and sourcing information for: 21023A
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An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.
2a thread class, 0.280 inches minimum and 0.310 inches maximum fastener length, 0.230 inches minimum and 0.310 inches maximum thread length, right-hand thread direction, pan 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
- 2a
- Thread Direction
- right-hand
- Thread Length
- 0.230 inches minimum and 0.310 inches maximum
- Fastener Length
- 0.280 inches minimum and 0.310 inches maximum
- Head Style
- pan
- Head Diameter
- 0.205 inches minimum and 0.219 inches maximum
- Head Height
- 0.070 inches minimum and 0.080 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.112 inches
- Thread Quantity Per Inch
- 40
- Minimum Tensile Strength
- 55000 pounds per square inch
- Screw Material
- copper alloy 260 or copper alloy 268 or copper alloy 230 or copper alloy 377 or copper alloy 360 or copper alloy 353 or copper alloy 270 or copper alloy 462 or copper alloy 464 or copper alloy 482 or copper alloy 485 or copper alloy 210 or copper alloy 220 or copper alloy 510 or copper alloy 745 or copper alloy 752 or copper alloy 757 or copper alloy 764 or copper alloy 770 or copper alloy 342
- Screw Surface Treatment
- silver
- Screw Surface Treatment Document And Classification
- qq-n-290 grade c fed spec single treatment response and qq-s-365 grade a fed spec single treatment response
- Precious Material And Location
- overall silver
- Precious Material
- silver
- Thread Series Designator
- unc
- Nondefinitive Spec/Std Data
- 3 type and 9c style
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 |
|---|---|
| 21023A | Machine Screw |
| 755017A8243-1 | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-084-5395?
Does the NSN 5305-01-084-5395 have a Schedule B code assigned?
Does NSN 5305-01-084-5395 require demilitarization?
Does NSN 5305-01-084-5395 contain precious materials?
Does NSN 5305-01-084-5395 contain hazardous materials?
When the NSN 5305-01-084-5395 was assigned to the Federal Catalog?
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