NAS222-28
View detailed technical data, stock status, and sourcing information for: NAS222-28
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An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal 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. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
round head style, right-hand thread direction, 0.430 inches minimum and 0.578 inches maximum thread length, 1.766 inches minimum and 1.813 inches maximum fastener length, 3a thread class
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
- 0.430 inches minimum and 0.578 inches maximum
- Fastener Length
- 1.766 inches minimum and 1.813 inches maximum
- Head Style
- round
- Head Diameter
- 0.464 inches minimum and 0.493 inches maximum
- Head Height
- 0.133 inches minimum and 0.150 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 125000 pounds per square inch
- Hardness Rating
- 26.0 rockwell c minimum and 32.0 rockwell c maximum
- Screw Material
- steel comp 8630
- Screw Material Document And Classification
- mil-s-6050 mil spec single material response or an-s-9 mil std single material response
- Screw Surface Treatment
- cadmium
- Screw Surface Treatment Document And Classification
- qq-p-416,ty 1,cl 3 fed spec single treatment response
- 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Below is a list of NSNs that have been officially superseded by this NSN: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 |
|---|---|---|
| 5305-00-271-7782 | No Name Available | 01/01/1960 |
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 |
|---|---|
| NAS222-28 | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-282-8712?
Does the NSN 5305-00-282-8712 have a Schedule B code assigned?
Does NSN 5305-00-282-8712 require demilitarization?
Does NSN 5305-00-282-8712 contain precious materials?
Does NSN 5305-00-282-8712 contain hazardous materials?
When the NSN 5305-00-282-8712 was assigned to the Federal Catalog?
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